Section 611.100  Purpose, Scope, and Applicability

 

a)         This Part satisfies the mandate in Section 17.5 of the Environmental Protection Act (Act) requiring the Board to adopt regulations that are identical in substance with federal regulations the United States Environmental Protection Agency (USEPA) adopted under Sections 1412(b), 1414(c), 1417(a), and 1445(a) of the Safe Drinking Water Act (SDWA) (42 U.S.C. 300g-1(b), 300g-3(c), 300g-6(a), and 300j-4(a)).

 

b)         This Part establishes primary drinking water regulations (NPDWRs) under SDWA. This Part also includes additional State requirements that are consistent with and more stringent than the USEPA regulations (Section 7.2(a)(6) of the Act). The Board marked the latter provisions as "additional State requirements".  These additional State requirements apply only to CWSs.

 

BOARD NOTE:  This subsection (b) derives from 40 CFR 141.1.

 

c)         This Part applies to suppliers, owners and operators of PWSs, and persons affecting the quality of water the public consumes from suppliers or PWSs.  PWSs include CWSs, non-CWSs, and NTNCWSs, as Section 611.101 defines these terms.

 

1)         A CWS must obtain a permit from the Illinois Environmental Protection Agency (Agency) under 35 Ill. Adm. Code 602.

 

2)         A non-CWS supplier is subject to additional rules of the Illinois Department of Public Health (Public Health or DPH) under Section 9 of the Illinois Groundwater Protection Act [415 ILCS 55/9], including 77 Ill. Adm. Code 900.

 

3)         A non-CWS supplier needs not obtain a permit or other approval from the Agency or file reports or other documents with the Agency.  Any provision in this Part requiring a non-CWS supplier to obtain a permit or approval or file reports or other documents requires the non-CWS supplier to obtain the comparable form of permit or approval from or file the comparable report or other document with Public Health.

 

4)         Any person introducing pipes, pipe or plumbing fittings, or fixtures, solder, or flux into commerce or installing or repairing a facility providing water for human consumption using these items must comply with Section 611.126.

 

BOARD NOTE:  Section 611.126, requiring lead-free pipes, fittings, fixtures, solder, and flux for drinking water, applies to persons other than suppliers and PWSs.

 

d)         This Part applies to a PWS, unless the PWS meets these conditions:

 

1)         The PWS consists only of distribution and storage facilities (and does not have any collection and treatment facilities);

 

2)         The PWS obtains all of its water from but is not owned or operated by a supplier to which apply this Part, 40 CFR 141, or the comparable rules of a sister state that USEPA authorized under 40 CFR 142;

 

3)         The PWS does not sell water to any person; and

 

4)         The PWS is not a carrier conveying passengers in interstate commerce.

 

BOARD NOTE:  This subsection (d) derives from 40 CFR 141.3. The text of 40 CFR 141.3 is nearly identical to section 1411 of SDWA (42 U.S.C. 300g).  On December 23, 2003 (at 68 Fed. Reg. 74233), USEPA changed its policy relating to section 1411. USEPA determined that a property owner not otherwise subject to SDWA national primary drinking water standards "submeters" water, and does not "sell" water within the meaning of section 1411(3), if the property owner meters water to tenants on its property and bills the tenants for the water. USEPA charged the State with determining whether water is "submetered" or "sold" in a particular situation.  USEPA stated that eligibility for exclusion requires that the owner obtain water from a regulated water system.  USEPA gave factors to aid the State's determination: the property has a limited distribution system with no known backflow or cross-connection issues; the majority of the plumbing is within a structure, rather than in the ground; and property ownership is single or within an association of owners.  USEPA cited apartment buildings, co-ops, and condominiums as examples of eligible properties.  USEPA does not intend that the policy apply to a large distribution system, one serving a large population, or one serving a mixed commercial and residential population.  USEPA cited "many military installations/facilities" and large mobile home parks as examples of systems to which the policy would not apply.

 

BOARD NOTE:  Generally, Section 17.12 of the Environmental Protection Act (Act) [415 ILCS 5/17.12] concerns lead in drinking water supplies.  The Board recognizes that Section 17.12 of the Act might include provisions that are more stringent than some provisions in this Part.  Section 17.12(mm) of the Act [415 ILCS 5/17.12(mm)] provides that "[t]he Agency may propose to the Board, and the Board may adopt, any rules necessary to implement and administer this Section [17.12 of the Act]."  When the Agency files a rulemaking proposal with the Board under Section 17.12(mm) of the Act, the Board will conduct a general rulemaking to update this Part as appropriate.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.101  Definitions

 

The terms this Section defines have the given meanings in this Part:

 

"Act" means the Environmental Protection Act [415 ILCS 5].

 

"Agency" means the Illinois Environmental Protection Agency.

BOARD NOTE:  The Department of Public Health (Public Health or DPH) regulates non-CWSs, including NTNCWSs and transient non-CWSs.  "Agency" means Public Health if implementation by Public Health occurs with regard to non-CWS suppliers.

 

"Approved source of bottled water", for the purposes of Section 611.130(d)(4), means a source of water and the packaged water it provides, whether from a spring, artesian well, drilled well, municipal water supply, or any other source, that the provider inspects, samples, analyzes, and finds has a safe and sanitary quality under laws and regulations of State and local government agencies having jurisdiction, as evidenced by current certificates or notations of approval in the packaging plant from each government agency having jurisdiction over the source, the water it bottles, and distributing the water in commerce.

BOARD NOTE:  This definition derives from 40 CFR 142.62(g)(2) and 21 CFR 129.3(a). The Board cannot compile an exhaustive listing of all federal, State, and local laws regulating bottled water and bottling water.  However, the Board is aware of some:  the Illinois Food, Drug and Cosmetic Act [410 ILCS 620], the Bottled Water Act [815 ILCS 310], the DPH Water Well Construction Code (77 Ill. Adm. Code 920), the DPH Water Well Pump Installation Code (77 Ill. Adm. Code 925), the federal bottled water quality standards (21 CFR 103.35), the federal drinking water processing and bottling standards (21 CFR 129), the federal Current Good Manufacturing Practice in Manufacturing, Packing, or Holding Human Food (21 CFR 110), the federal Fair Packaging and Labeling Act (15 U.S.C. 1451 et seq.), and the federal Fair Packaging and Labeling regulations (21 CFR 201).

 

"Bag filters" means pressure-driven separation devices that remove particulate matter larger than one micrometer using an engineered porous filtration media.  These are typically a non-rigid fabric filtration media housed in a pressure vessel where the direction of flow is from the inside to outside the bag.

 

"Bank filtration" means a water treatment process using a well to recover surface water naturally infiltrating into groundwater through a river bed or banks.  A nearby pumping water supply or other wells typically enhances infiltration by the hydraulic gradient they impose.

 

"Best available technology" or "BAT" means the best technology, treatment techniques, or other means that USEPA determines are available for the contaminant in question.  Subpart F specifies BAT.

 

"Bin classification" or "bin" means, for Subpart Z, the appropriate of the four treatment categories (Bin 1, Bin 2, Bin 3, or Bin 4) that a filtered system supplier assigns itself under Section 611.1010 based on the results of source water Cryptosporidium monitoring under Section 611.1001. This bin classification determines the degree of additional Cryptosporidium treatment, if any, the filtered system supplier must provide.

BOARD NOTE:  This definition derives from 40 CFR 141.710 and 71 Fed. Reg. 654, 657 (Jan. 5, 2006).

 

"Board" means the Illinois Pollution Control Board.

 

"Cartridge filter" means a pressure-driven separation device that removes particulate matter larger than 1 micrometer using an engineered porous filtration media.  A cartridge filter typically has rigid or semi-rigid self-supporting filter elements housed in a pressure vessel in which flow is from outside to inside the cartridge.

 

"CAS No." means "Chemical Abstracts Services Number".

 

"Clean compliance history" means, for Subpart AA, a record of no MCL violations under Section 611.325; no monitoring violations under Subpart L or Subpart AA; and no coliform treatment technique trigger exceedances or treatment technique violations under Subpart AA.

 

"Coagulation" means a process using coagulant chemicals and mixing that destabilizes and agglomerates colloidal and suspended materials into flocs.

 

"Combined distribution system" means the interconnected distribution system comprising the distribution systems of wholesale systems and of the consecutive systems that receive finished water.

 

"Community water system" or "CWS" means a PWS serving at least 15 service connections used by year-round residents or regularly serving at least 25 year-round residents.

BOARD NOTE:  This definition differs slightly from that of Section 3.145 of the Act.

 

"Compliance cycle" means the nine-calendar-year cycle during which PWSs must monitor.  Each compliance cycle consists of three three-year compliance periods.  The first calendar cycle ran calendar years 1993 through 2001, the second ran 2002 through 2010, the third ran 2011 through 2019, etc.

 

"Compliance period" means a three-calendar-year period within a compliance cycle.  Each compliance cycle has three three-year compliance periods.  For example, the first compliance period ran calendar years 1993 through 1995, the second ran 1996 through 1998, and the third ran 1999 through 2001 within the first compliance cycle.

 

"Comprehensive performance evaluation" or "CPE" is a thorough review and analysis of a treatment plant's performance-based capabilities and associated administrative, operational, and maintenance practices.  The supplier conducts a CPE to identify factors that may adversely affect a plant's ability to comply.  The supplier conducts a CPE to achieve compliance and emphasize approaches it can implement without significant capital improvements.

BOARD NOTE: The final sentence of the definition of "comprehensive performance evaluation" in 40 CFR 141.2 is Section 611.160(a)(2), since it contains substantive elements.

 

"Confluent growth" means a continuous bacterial growth covering the entire filtration area or portion of a membrane filter in which bacterial colonies are not discrete.

 

"Consecutive system" means a PWS receiving some or all of its finished water from one or more wholesale systems.  Delivery may be through a direct connection or the distribution system of one or more consecutive systems.

 

"Contaminant" means any physical, chemical, biological, or radiological substance or matter in water.

 

"Conventional filtration treatment" means a series of processes, including coagulation, flocculation, sedimentation, and filtration, resulting in substantial "particulate removal".

 

"CT" or "CT_calc" is the product of residual disinfectant concentration (RDC or C) in mg/L, determined before or at the first customer, and the corresponding disinfectant contact time (T) in minutes.  If a supplier applies disinfectants at more than one point prior to the first customer, it must determine the CT of each disinfectant sequence before or at the first customer to determine the total percent inactivation or "total inactivation ratio".  In determining the total inactivation ratio, the supplier must determine the RDC of each disinfection sequence and corresponding contact time before any subsequent disinfection application points.  (See the definition of "CT_99.9".)

 

"CT_99.9" is the CT value required for 99.9 percent (3-log) inactivation of Giardia lamblia cysts. Tables 1.1 through 1.6, 2.1, and 3.1 of Appendix B list CT_99.9 values for a variety of disinfectants and conditions.  (See the definition of "inactivation ratio".)

BOARD NOTE:  This definition derives from the definition of "CT" in 40 CFR 141.2.

 

"Diatomaceous earth filtration" means a process resulting in substantial particulate removal:

 

The process deposits a precoat cake of diatomaceous earth filter media on a support membrane (septum); and

 

The process continuously adds additional filter media, known as body feed, to the feed water to maintain permeability of the filter cake while filtering the water by passing through the cake on the septum.

 

"Direct filtration" means a series of processes, including coagulation and filtration but excluding sedimentation, resulting in substantial particulate removal.

 

"Disinfectant" means any oxidant, including chlorine, chlorine dioxide, chloramines, and ozone, that a supplier adds to water in any part of the treatment or distribution process to kill or inactivate pathogenic microorganisms.

 

"Disinfectant contact time" or "T" means the time in minutes that water moves from the point of disinfectant application or the previous point of RDC measurement to a point before or at the point where the supplier measures RDC.

 

If the supplier measures only one RDC, T is the time in minutes that water moves from the point of disinfectant application to a point before or at the point where RDC is measured.

 

If the supplier measures more than one RDC:

 

For the first measurement of RDC, T is the time in minutes that water moves from the first or only point of disinfectant application to a point before or at the point where the supplier measures the first RDC; and

 

For subsequent measurements of RDC, T is the time in minutes that water moves from the previous RDC measurement point to the RDC measurement point where the supplier calculates the particular T.

 

In pipelines, the supplier must calculate T based on "plug flow" by dividing the internal volume of the pipe by the maximum hourly flow rate through that pipe.

 

Within mixing basins and storage reservoirs, the supplier must determine T using tracer studies or an equivalent demonstration.

 

"Disinfection" means a process that inactivates pathogenic organisms in water by chemical oxidants or equivalent agents.

 

"Disinfection byproduct" or "DBP" means a chemical byproduct forming when disinfectants used for microbial control react with naturally occurring compounds already present in source water.  DBPs include bromodichloromethane, bromoform, chloroform, dichloroacetic acid, bromate, chlorite, dibromochloromethane, and certain haloacetic acids.

 

"Disinfection profile" is a summary of daily Giardia lamblia inactivation through a treatment plant.  The procedure for developing a disinfection profile is in Section 611.742.

 

"Distribution system" includes all points downstream of an "entry point" to the point of consumer ownership.

 

"Domestic or other non-distribution system plumbing problem" means a coliform contamination problem in a PWS having more than one service connection that is limited to the specific service connection from which the supplier took the coliform-positive sample.

 

"Dose equivalent" means the product of the absorbed dose from ionizing radiation and the factors accounting for differences in biological effect due to the type of radiation and its distribution in the body.

BOARD NOTE:  The International Commission on Radiation Units and Measurements (ICRU) specifies "dose equivalent" as the product of the absorbed dose (D), quality factor (QF), dose distribution factor (DF), and other necessary factors.  See "Radiation Quantities and Units," International Commission on Radiological Units and Measurements (ICRU) Report 10a, Handbook 84, U.S. Department of Commerce, National Bureau of Standards (1962).

 

"Dual sample set" means a set of two samples the supplier collects at the same time and same location, analyzing one sample for TTHM and the other sample for HAA5. A supplier collects dual sample sets to conduct an IDSE under Subpart W and determine compliance with the TTHM and HAA5 MCLs under Subpart Y.

 

"E. coli" means Escherichia coli, a species of bacteria used as a specific indicator of fecal contamination and potential harmful pathogens.

BOARD NOTE:  This definition derives from 78 Fed. Reg. 10270, 10271 (Feb. 13, 2013).

 

"Enhanced coagulation" means adding sufficient coagulant to improve removing disinfection byproduct (DBP) precursors by conventional filtration treatment.

 

"Enhanced softening" means using precipitative softening to improve removing disinfection byproduct (DBP) precursor.

 

"Entry point" means a point just downstream of the final treatment operation but upstream of the first user and any mixing with other water.  If the supplier uses raw water without treatment, the "entry point" is the raw water source.  If a PWS receives treated water from another PWS, the "entry point" is a point just downstream of the other PWS but upstream of the first user and any mixing with other water.

 

"Filter profile" is a graphical representation of individual filter performance based on continuous turbidity measurements or total particle counts versus time for an entire filter run from startup through backwash, including an assessment of filter performance while the supplier backwashes another filter.

 

"Filtration" means a process passing water through porous media to remove particulate matter.

 

"Finished water" means water that the supplier introduces into the distribution system of a PWS intending the water for distribution and consumption without further treatment, except treatment necessary to maintain water quality in the distribution system (e.g., booster disinfection, addition of corrosion control chemicals, etc.).

 

"Flocculation" means a process enhancing agglomeration or collection of smaller floc particles into larger, more easily settleable particles through gentle hydraulic or mechanical stirring.

 

"Flowing stream" means a course of running water flowing in a definite channel.

 

"40/30 certification" means the certification a supplier submits to the Agency under Section 611.923 that the supplier had no TTHM or HAA5 monitoring violations and no individual sample from its system exceeded 0.040 mg/L TTHM or 0.030 mg/L HAA5 during eight consecutive calendar quarters.

BOARD NOTE:  This definition derives from 40 CFR 141.603(a).

 

"GAC10" means granular activated carbon (GAC) filter beds with an empty-bed contact time of 10 minutes based on average daily flow and a carbon reactivation frequency of every 180 days, except that the reactivation frequency for GAC10 a supplier uses as a best available technology to comply with the MCLs under Section 611.312(b)(2) is 120 days.

 

"GAC20" means granular activated carbon filter beds with an empty-bed contact time of 20 minutes based on average daily flow and a carbon reactivation frequency of every 240 days.

 

"GC" means "gas chromatography" or "gas-liquid phase chromatography".

 

"GC/MS" means gas chromatography (GC) followed by mass spectrometry (MS).

 

"Gross alpha particle activity" means the total radioactivity due to alpha particle emission as inferred from measurements on a dry sample.

 

"Gross beta particle activity" means the total radioactivity due to beta particle emission as inferred from measurements on a dry sample.

 

"Groundwater system" or "GWS" means a PWS using only groundwater sources, including a consecutive system receiving finished groundwater.

BOARD NOTE:  This definition derives from 40 CFR 141.400(b).

 

"Groundwater under the direct influence of surface water" means any water beneath the ground surface with significant occurrence of insects or other macroorganisms, algae, or large-diameter pathogens, such as Giardia lamblia or Cryptosporidium, or significant and relatively rapid shifts in water characteristics, such as turbidity, temperature, conductivity, or pH, that closely correlate to climatological or surface water conditions. "Groundwater under the direct influence of surface water" is as determined under Section 611.212.

 

"Haloacetic acids (five)" or "HAA5" means the sum of the concentrations in milligrams per liter (mg/L) of five haloacetic acid compounds (monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, monobromoacetic acid, and dibromoacetic acid), rounded to two significant figures after summing.

 

"Halogen" means one of the chemical elements chlorine, bromine, or iodine.

 

"HPC" means "heterotrophic plate count", as measured under Section 611.531(a)(2)(C).

 

"Hydrogeologic sensitivity assessment", for Subpart S, means a determination of whether a GWS supplier obtains water from a hydrogeologically sensitive setting.

BOARD NOTE:  This definition derives from 40 CFR 141.400(c)(5).

 

"Inactivation ratio" or "Ai" means the ratio:

 

Ai = CT_calc/CT_99.9

 

The sum of the inactivation ratios, or "total inactivation ratio" (B), is calculated by adding together the inactivation ratio for each disinfection sequence:

 

B = Σ(Ai)

 

A total inactivation ratio equal to or greater than 1.0 assumedly provides a 3-log inactivation of Giardia lamblia cysts.

 

BOARD NOTE:  This definition derives from the definition of "CT" in 40 CFR 141.2.

 

"Initial compliance period" means the three-year compliance period that began January 1, 1993, except for the MCLs for dichloromethane, 1,2,4-trichlorobenzene, 1,1,2-trichloroethane, benzo(a)pyrene, dalapon, di(2-ethylhexyl)adipate, di(2-ethylhexyl)phthalate, dinoseb, diquat, endothall, endrin, glyphosate, hexachlorobenzene, hexachlorocyclopentadiene, oxamyl, picloram, simazine, 2,3,7,8-TCDD, antimony, beryllium, cyanide, nickel, and thallium, as they apply to a supplier whose system has fewer than 150 service connections, for which "initial compliance period" means the three-year compliance period that began January 1, 1996.

 

"Initial distribution system evaluation" or "IDSE" means the evaluation, performed by the supplier under Section 611.921(c), to determine the locations in a distribution system that are representative of high TTHM and HAA5 concentrations throughout the distribution system.  An IDSE is used in conjunction with, but is distinct from, the compliance monitoring undertaken to identify and select monitoring locations used to determine compliance with Subpart I.

BOARD NOTE:  This definition derives from 40 CFR 141.601(c).

 

"Inorganic contaminants" or "IOCs" refers to that group of contaminants designated as such in USEPA regulatory discussions and guidance documents.  IOCs include antimony, arsenic, asbestos, barium, beryllium, cadmium, chromium, cyanide, mercury, nickel, nitrate, nitrite, selenium, and thallium.

BOARD NOTE:  This definition derives from 40 CFR 141.23(a)(4).

 

"ℓ" or "L" means liter.

 

"Lake or reservoir" means a natural or man made basin or hollow on the Earth's surface in which water collects or is stored that may or may not have a current or single direction of flow.

 

"Legionella" means a genus of bacteria, some species of which have caused a type of pneumonia called Legionnaires Disease.

 

"Level 1 assessment" means an evaluation to identify the possible presence of sanitary defects, defects in distribution system coliform monitoring practices, and (when possible) the likely reason that the system triggered the assessment.  The system owner or operator conducts a Level 1 assessment.  Minimum elements include review and identification of atypical events that could affect distributed water quality or indicate that distributed water quality is impaired; changes in distribution system maintenance and operation that could affect distributed water quality (including water storage); source and treatment considerations that bear on distributed water quality, if appropriate (e.g., whether a groundwater system is disinfected); existing water quality monitoring data; and inadequacies in sample sites, sampling protocol, and sample processing.  The supplier must conduct the assessment consistent with any Agency-imposed permit conditions that tailor specific assessment elements with respect to the size and type of the system and the size, type, and characteristics of the distribution system.

 

"Level 2 assessment" means an evaluation to identify the possible presence of sanitary defects, defects in distribution system coliform monitoring practices, and (when possible) the likely reason that the system triggered the assessment.  A Level 2 assessment provides a more detailed examination of the system (including the system's monitoring and operational practices) than does a Level 1 assessment through the use of more comprehensive investigation and review of available information, additional internal and external resources, and other relevant practices.  A person approved by the Agency in a SEP conducts a Level 2 assessment, and that person may include the system operator.  Minimum elements include review and identification of atypical events that could affect distributed water quality or indicate that distributed water quality is impaired; changes in distribution system maintenance and operation that could affect distributed water quality (including water storage); source and treatment considerations that bear on distributed water quality, if appropriate (e.g., whether a groundwater system is disinfected); existing water quality monitoring data; and inadequacies in sample sites, sampling protocol, and sample processing.  The person conducting the Level 2 assessment and the supplier must conduct the assessment consistent with any Agency-imposed permit conditions that tailor specific assessment elements with respect to the size and type of the system and the size, type, and characteristics of the distribution system.  The person conducting the Level 2 assessment and the supplier must comply with any expedited actions or additional actions the SEP requires in the instance of an E. coli MCL violation.

 

"Locational running annual average" or "LRAA" means the average of sample analytical results for samples taken at a particular monitoring location during the previous four calendar quarters.

 

"Man-made beta particle and photon emitters" means all radionuclides emitting beta particles or photons listed in NBS Handbook 69 (63), incorporated by reference in Section 611.102, except the daughter products of thorium-232, uranium-235 and uranium-238.

BOARD NOTE:  The USEPA-recognized naturally occurring daughter products are alpha emitters (^211,212Bi, ²³¹Pa, ^{210,212,214,215,216,218}Po, ^223,224,226Ra, ^219,220,222Rn, ^227,228,230Th, ²³⁴U ) and beta emitters (^227,228Ac, ^210,212,214Bi, ²³⁴Pa, ^{210,211,212,214}Pb, ²²⁸Ra, ^231,234Th, and ^207,208TI.  See 56 Fed. Reg. 33050, 33063-65 (July 18, 1991).

 

"Maximum contaminant level" or "MCL" means the maximum permissible concentration of a contaminant in water a supplier delivers to any user of its PWS. (See Section 611.121.)

 

"Maximum contaminant level goal" or "MCLG" means the maximum concentration of a contaminant in drinking water that USEPA determined will cause no known or anticipated adverse effect on the health of persons, allowing an adequate margin of safety.  MCLGs are nonenforceable health goals.

BOARD NOTE:  The federal MCLGs are outside the scope of the Board's identical-in-substance mandate under Section 17.5 of the Act.

 

"Maximum residual disinfectant level" or "MRDL" means the maximum permissible concentration of a disinfectant added for water treatment that USEPA determined a supplier may add and may not exceed at the consumer's tap without an unacceptable risk of adverse health effects.  MRDLs are enforceable in the same manner as are MCLs.  (See Section 611.313 and Section 611.383.)

 

"Maximum residual disinfectant level goal" or "MRDLG" means the maximum concentration of a disinfectant that USEPA determined a supplier may add for water treatment that would not cause any known or anticipated adverse effect on the health of persons, allowing an adequate margin of safety.  MRDLGs are nonenforceable health goals and do not reflect the benefit of the addition of the chemical for control of waterborne microbial contaminants.

 

"Maximum total trihalomethane potential" or "MTP" means the maximum concentration of total trihalomethanes (TTHMs) produced in a given water containing a disinfectant residual after seven days at a temperature of 25° C or above.

 

"Membrane filtration" means a pressure- or vacuum-driven separation process in which particulate matter larger than one micrometer is rejected by an engineered barrier, primarily through a size exclusion mechanism, having a measurable removal efficiency of a target organism that is verifiable using a direct integrity test.  This definition includes the common membrane technologies of microfiltration, ultrafiltration, nanofiltration, and reverse osmosis.

 

"Method detection limit" or "MDL" means the minimum concentration of a substance that analysis can measure and report with 99 percent confidence that the analyte concentration is greater than zero, from analysis of a sample in a given matrix containing the analyte.

 

"MFL" means millions of fibers per liter larger than 10 micrometers.

BOARD NOTE:  This definition derives from 40 CFR 141.23(a)(4)(i).

 

"mg" means milligrams (1/1000 of a gram).

 

"µg" means micrograms (1/1,000,000 of a gram).

 

"mg/ℓ" or "mg/L" means milligrams per liter.

 

"µg/ℓ" or "µg/L" means micrograms per liter.

 

"Mixed system" means a PWS using both groundwater and surface water sources.

BOARD NOTE:  Derived from 40 CFR 141.400(b).

 

"MUG" means 4-methyl-umbelliferyl-beta-d-glucuronide(IUPAC name:  (2S,3S,4S,5R,6S)-3,4,5-trihydroxy-6-((4-methyl-2-oxo-2Hchromen-7-yl)oxy)tetrahydro-2H-pyran-2-caboxylic acid; CAS no. 881005-91-0).

 

"Near the first service connection" means at one of the 20 percent of all service connections in the entire system that are nearest the PWS treatment facility, as measured by water transport time within the distribution system.

 

"nm" means nanometer (1/1,000,000,000 of a meter).

 

"Non-community water system" or "NCWS" or "non-CWS" means a PWS that is not a CWS.  A non-CWS is either a "transient non-community water system (TWS)" or NTNCWS.

 

"Non-transient, non-community water system" or "NTNCWS" means a PWS that is not a CWS and that regularly serves at least 25 of the same persons over six months per year.

 

"NPDWR" means "national primary drinking water regulation".

 

"NTU" means "nephelometric turbidity units".

 

"P-A Coliform Test" means "Presence-Absence Coliform Test".

 

"Paired sample" means two samples of water for total organic carbon (TOC). One sample is of raw water the supplier takes prior to any treatment.  The supplier takes the other sample after the point of combined filter effluent representative of the treated water.  The supplier takes these samples at the same time.  (See Section 611.382.)

 

"Performance evaluation sample" or "PE sample" means a reference sample the Agency provides a laboratory for demonstrating that the laboratory can successfully analyze the sample within limits of performance the Agency specifies.  For bacteriological laboratories, Public Health provides the sample.  For radiological laboratories, the Illinois Emergency Management Agency provides the sample.  The laboratory does not know the true value of the concentration of the reference material at the time of analysis.

 

"Person" means an individual, corporation, company, association, partnership, state, unit of local government, or federal agency.

 

"Phase I" refers to that group of chemical contaminants and the accompanying regulations promulgated by USEPA on July 8, 1987, at 52 Fed. Reg. 25712.

 

"Phase II" refers to that group of chemical contaminants and the accompanying regulations promulgated by USEPA on January 30, 1991, at 56 Fed. Reg. 3578.

 

"Phase IIB" refers to that group of chemical contaminants and the accompanying regulations promulgated by USEPA on July 1, 1991, at 56 Fed. Reg. 30266.

 

"Phase V" refers to that group of chemical contaminants promulgated by USEPA on July 17, 1992, at 57 Fed. Reg. 31776.

 

"Picocurie" or "pCi" means the quantity of radioactive material producing 2.22 nuclear transformations per minute.

 

"Plant intake" means the works or structures at the head of a conduit diverting  water from a source (e.g., a river or lake) into the treatment plant.

 

"Point of disinfectant application" is the point where a supplier applies the disinfectant and downstream of where the water is not subject to recontamination by surface water runoff.

 

"Point-of-entry treatment device" or "POE device" is a treatment device a consumer applies to the drinking water entering a house or building to reduce contaminants in the drinking water distributed throughout the house or building.

 

"Point-of-use treatment device", "point-of-use device", or "POU" is a water treatment device a consumer applies to a single tap to reduce contaminants in drinking water at that tap. Under Subpart G, a manufacturer, importer, or accredited third-party certifying body must certify a POU device as complying with NSF/ANSI 53 or 58 as in effect on the date of manufacture or import to satisfy the rule.

BOARD NOTE:  NSF/ANSI 53 is the health-based standard for lead and several other contaminants for water filter devices, including tap filter-type treatment devices.  Identifying a device as certified under NSF/ANSI 53 at the time of purchase is possible.  NSF maintains an on-line list of certified devices at info.nsf.org/Certified/dwtu/listings_leadreduction.asp.  See the definition of "accredited third-party certifying body" in 35 Ill. Adm. Code 611.126(b) relating to NSF/ANSI 372.

 

"Presedimentation" means a preliminary treatment process a supplier uses to remove gravel, sand, and other particulate material from the source water through settling before the water enters the primary clarification and filtration processes in a treatment plant.

 

"Public Health" or "DPH" means the Illinois Department of Public Health.

BOARD NOTE:  See the definition of "Agency" in this Section.

 

"Public water system" or "PWS" means a system providing water to the public for human consumption through pipes or other constructed conveyances if the system has at least 15 service connections or regularly serves an average of at least 25 individuals daily at least 60 days out of the year.  A PWS is either a CWS or non-CWS.  A PWS does not include any special irrigation district.  "PWS" includes certain facilities:

 

Any collection, treatment, storage, and distribution facilities under control of the PWS operator that the operator uses in connection with the system; and

 

Any collection or pretreatment storage facilities not under control of the PWS operator that the operator uses primarily in connection with the system.

BOARD NOTE:  SDWA and USEPA rules use "public water system".  The Act uses "public water supply".  The Board intends that "public water supply" means the same as "public water system" and both terms refer both to the facilities providing water and the persons owning and operating those facilities.

 

"Radioactive contaminants" means those contaminants for which Section 611.330 imposes an MCL.  "Radioactive contaminants" include radium-226 and -228, tritium, strontium-89, strontium-90, iodine-131, cesium-134, uranium, gross alpha emitters, gross beta emitters, photon emitters, and other nuclides emitting energetic nuclear particles or photons.

BOARD NOTE:  This definition derives from Table C in 40 CFR 141.25(c), 141.66, appendix A to subpart O, and appendices A and B to subpart Q of 40 CFR 141.

 

"Reliably and consistently below the MCL" for a contaminant means an Agency determination based on analytical results following the initial detection of a contaminant to determine the qualitative condition of water from an individual sampling point or source.  The Agency must base this determination on the consistency of analytical results, the degree below the MCL, the susceptibility of source water to variation, and other vulnerability factors pertinent to the detected contaminant that may influence the quality of water.

BOARD NOTE:  This definition derives from 40 CFR 141.23(b)(9), (c)(8), (d)(2), and (e)(3) and 141.24(f)(11)(ii), and 141.24(f)(11)(iii), (f)(12), (h)(6)(ii), and (h)(8).

 

"Rem" means the unit of dose equivalent from ionizing radiation to the total body or any internal organ or organ system.  A "millirem (mrem)" is 1/1000 of a rem.

 

"Repeat compliance period" means a compliance period that begins after the initial compliance period.

 

"Representative" means that a sample reflects the quality of water a supplier delivers to consumers under conditions when the supplier uses all raw water sources it requires to supply water under normal use conditions  and all treatment properly operates.

 

"Residual disinfectant concentration", "RDC", or the variable "C" in CT calculations means the concentration of disinfectant measured in mg/L in a representative sample of water.  For purposes of the requirement of Section 611.241(d) of maintaining a detectable RDC in the distribution system, "RDC" means a residual of free or combined chlorine.

 

"Safe Drinking Water Act" or "SDWA" means the Public Health Service Act, as amended by the Safe Drinking Water Act, Pub. L. 93-523, 42 U.S.C. 300f et seq.

 

"Sanitary defect" means a defect that could provide a pathway of entry for microbial contamination of a supplier's distribution system or that indicates a failure or imminent failure in an existing barrier to microbial contamination.

 

"Sanitary survey" means an onsite review of the delineated WHPAs (identifying sources of contamination within the WHPAs and evaluations or the hydrogeologic sensitivity of the delineated WHPAs the Agency conducted under source water assessments or utilizing other relevant information if available), facilities, equipment, operation, maintenance, and monitoring compliance of a PWS supplier to evaluate the adequacy of the system, its sources, and operations for the production and distribution of safe drinking water.

BOARD NOTE:  This definition derives from 40 CFR 141.2 and 40 CFR 142.16(o)(2).

 

"Seasonal system" means a non-CWS not operating as a PWS on a year-round basis and starting up and shutting down at the beginning and end of each operating season.

 

"Sedimentation" means a process for removing solids before filtration by gravity or separation.

 

"SEP" means special exception permit the Agency issued under 35 Ill. Adm. Code 602.600.

 

"Service connection", as used in the definition of PWS, does not include a connection to a system delivering water by a constructed conveyance other than a pipe if any of certain conditions exist:

 

Consumers use the water exclusively for purposes other than residential use (consisting of drinking, bathing, and cooking, or other similar uses);

 

The Agency issues a SEP determining that the supplier provides alternative water for residential use or similar uses for drinking and cooking to achieve the equivalent level of public health protection to that the applicable national primary drinking water regulations provide; or

 

The Agency issues a SEP determining that the water provided for residential use or similar uses for drinking, cooking, and bathing is centrally treated or treated at the point of entry by the provider, a pass-through entity, or the user to achieve the equivalent level of public health protection to that the applicable national primary drinking water regulations provide.

BOARD NOTE:  See SDWA sections 1401(4)(B)(i)(II) and (4)(B)(i)(III) (42 U.S.C. 300f(4)(B)(i)(II) and (4)(B)(i)(III)).

 

"Significant deficiency" means a deficiency the Agency identifies in a groundwater system under Section 611.803.  A significant deficiency might include a defect in system design, operation, or maintenance or a failure or malfunction of the sources, treatment, storage, or distribution system that the Agency determines causes or could cause introduction of contamination into the water the supplier delivers to consumers.

BOARD NOTE:  This definition derives from 40 CFR 142.16(o)(2)(iv).  The Agency must submit to USEPA a definition and description of at least one significant deficiency in each of the eight sanitary survey elements listed in Section 611.801(c) as part of the federal primacy requirements.  The Board added the general description of what a significant deficiency might include in non-limiting terms, not intending to limit Agency discretion submitting what USEPA requires.  What the Agency submits to USEPA cannot provide a definition within the Board regulations without Board rulemaking action.

 

"Slow sand filtration" means a process involving passing raw water through a bed of sand at low velocity (generally less than 0.4 meters per hour (m/h)) resulting in physical and biological mechanisms substantially removing particulate material.

 

"SOC" or "Synthetic organic chemical contaminant" refers to that group of contaminants designated as "SOCs" in Section 611.311(c).

 

"Source" means a well, reservoir, or other source of raw water.

 

"Special irrigation district" means an irrigation district in existence prior to May 18, 1994 that provides primarily agricultural service through a piped water system with only incidental residential use or similar use if the Agency issues a SEP making either of two determinations:

 

The Agency determines that the supplier or another person provides alternative water for residential use or similar uses for drinking or cooking to achieve the equivalent level of public health protection to that the applicable national primary drinking water regulations provide; or

 

The Agency issues a SEP determining that the water provided for residential use or similar uses for drinking, cooking, and bathing is centrally treated or treated at the point of entry by the provider, a pass-through entity, or the user to protect public health at a level equivalent to that the applicable NPDWRs provide.

BOARD NOTE:  This definition derives from 40 CFR 141.2 and sections 1401(4)(B)(i)(II) and (4)(B)(i)(III) of SDWA (42 U.S.C. 300f(4)(B)(i)(II) and (4)(B)(i)(III)).

 

"Standard monitoring" means the monitoring the supplier performs under Section 611.921(a) and (b) at various specified locations in its distribution system, including near entry points, at points representing the average residence time in its distribution system and at points in its distribution system representing high TTHM and HAA5 concentrations throughout the system.

BOARD NOTE:  This definition derives from 40 CFR 141.601(a) and (b).

 

"Standard sample" means the aliquot of finished drinking water the supplier or laboratory examines for the presence of coliform bacteria.

 

"State-only MCL" means one of the inorganic maximum contaminant levels (MCLs) in Section 611.300 or organic MCLs in Section 611.310.

BOARD NOTE:  State-only MCLs are those derived prior to the implementation of the USEPA "Phase II" regulations.  The Section 611.640 definition of this term, applying only to Subpart O, does not include the Section 611.300 inorganic MCLs.

 

"Subpart B system" means a PWS using surface water or groundwater under the direct influence of surface water as a source that is subject to Subpart B and the analytical and monitoring requirements of Sections 611.531, 611.532, and 611.533 and Appendices B and C.

BOARD NOTE:  USEPA rules define these "subpart H systems".

 

"Subpart I compliance monitoring" means monitoring required under Subpart I to demonstrate compliance with requirements for disinfectant residuals, disinfection byproducts, and disinfection byproduct precursors.

BOARD NOTE:  The equivalent to Subpart I is subpart L of 40 CFR 141 under USEPA's rules.

 

"Subpart Y compliance monitoring" or "Subpart Y monitoring" means monitoring Subpart Y requires to demonstrate compliance with Stage 2 requirements for disinfection byproducts.

BOARD NOTE:  The equivalent to Subpart Y is subpart V of 40 CFR 141 under USEPA's rules.

 

"Supplier " means any person owning or operating a PWS.  This term includes the "official custodian". Under several rules, “supplier” includes a person performing a compliance-related activity on behalf of the owner or operator (e.g., a laboratory performing analyses, an engineer performing an assessment, design review, system evaluation, or other work, or a property owner or occupant sampling a tap).

 

"Surface water" means any water that is open to the atmosphere and subject to surface runoff.

 

"SUVA" means specific ultraviolet absorption at 254 nanometers (nm), an indicator of the humic content of water.  "SUVA" is a sample's ultraviolet absorption at a wavelength of 254 nm (UV₂₅₄) (in m^-1) divided by its concentration of dissolved organic carbon (in mg/L).

 

"SWS" means "surface water system", a PWS using only surface water sources, including groundwater under the direct influence of surface water.

BOARD NOTE:  This definition derives from 40 CFR 141.23(a)(2) note, 141.24(h)(2) note, 141.70(a), and 141.88(a)(1)(ii) note.

 

"System-specific study plan" means the plan a supplier submits to the Agency under Section 611.922 for studying the occurrence of TTHM and HAA5 in the supplier's distribution system based on either monitoring results or modelling of the system.

BOARD NOTE:  This definition derives from 40 CFR 141.602.

 

"System with a single service connection" means a system supplying drinking water to consumers via a single service line.

 

"Too numerous to count" means that the total number of bacterial colonies exceeds 200 on a 47-mm diameter membrane filter used for coliform detection.

 

"Total organic carbon" or "TOC" means total organic carbon (in mg/L) measured using heat, oxygen, ultraviolet irradiation, chemical oxidants, or combinations of these to oxidize organic carbon to carbon dioxide, rounded to two significant figures.

 

"Total trihalomethanes" or "TTHM" means the sum of the concentration of trihalomethanes (THMs) in milligrams per liter (mg/L), rounded to two significant figures.

BOARD NOTE:  The definition of "trihalomethanes" lists the four compounds that USEPA considers TTHMs.

 

"Transient, non-community water system" or "transient non-CWS" means a non-CWS not regularly serving at least 25 of the same persons over six months of the year.

BOARD NOTE:  The federal regulations apply to all "public water systems", defined as all systems having at least 15 service connections or regularly serving water to at least 25 persons. (See 42 U.S.C. 300f(4).)  The Act mandates that the Board and the Agency regulate "public water supplies", defined as having at least 15 service connections or regularly serving 25 persons daily at least 60 days per year.  (See Section 3.365 of the Act.)  The Department of Public Health regulates transient non-CWSs.

 

"Treatment" means any process changing the physical, chemical, microbiological, or radiological properties of water that is under the control of the supplier and is not a point-of-use treatment device or a point-of-entry treatment device.  Treatment includes aeration, coagulation, sedimentation, filtration, activated carbon treatment, disinfection, or fluoridation.

 

"Trihalomethane" or "THM" means one of four specific derivatives of methane in which halogens substitute three of the four hydrogen atoms in the molecular structure.  There are four THMs:

 

Trichloromethane (chloroform),

Dibromochloromethane,

Bromodichloromethane, and

Tribromomethane (bromoform)

 

"Two-stage lime softening" means a process in which adding chemical precipitant and precipitating hardness occur in two distinct clarification process units in series prior to filtration.

 

"USEPA" means the U.S. Environmental Protection Agency.

 

"Uncovered finished water storage facility" is a tank, reservoir, or other facility directly open to the atmosphere a supplier uses to store water that will undergo no further treatment to reduce microbial pathogens except residual disinfection.

 

"Very small system waiver" means a conditional waiver from Subpart W available under Section 611.924 to a supplier serving fewer than 500 persons that took TTHM and HAA5 samples under Subpart I.

BOARD NOTE:  This definition derives from 40 CFR 141.604.

 

"Virus" means a virus of fecal origin that is infectious to humans by waterborne transmission.

 

"VOC" or "volatile organic chemical contaminant" refers to that group of contaminants designated as "VOCs" in Section 611.311(a).

 

"Waterborne disease outbreak" means a significant occurrence of acute infectious illness epidemiologically associated with the ingestion of water from a PWS that is deficient in treatment, as determined by an appropriate local or State agency.

 

"Wellhead protection area" or "WHPA" means the surface and subsurface recharge area surrounding a CWS well or well field, delineated outside of any applicable setback zones (under Section 17.1 of the Act) under Illinois' Wellhead Protection Program, through which contaminants are reasonably likely to move toward such well or well field.

BOARD NOTE:  The Agency uses two guidance documents for identification of WHPAs:

 

"Guidance Document for Groundwater Protection Needs Assessments", Illinois Environmental Protection Agency, Illinois State Water Survey, and Illinois State Geologic Survey joint report, January 1995; and

 

"The Illinois Wellhead Protection Program under Section 1428 of the Federal Safe Drinking Water Act", Illinois Environmental Protection Agency, No. 22480, October 1992.

 

"Wellhead protection program" means the Illinois wellhead protection program, approved by USEPA under section 1428 of the SDWA, 42 U.S.C. 300h-7.

BOARD NOTE:  This definition derives from 40 CFR 141.71(b).  The wellhead protection program includes the "groundwater protection needs assessment" under Section 17.1 of the Act and 35 Ill. Adm. Code 615 through 617.

 

"Wholesale system" means a PWS treating source water as necessary to produce finished water, delivering some or all of that finished water to another PWS.  A wholesale system may deliver water through a direct connection or through the distribution system of one or more consecutive systems.

 

BOARD NOTE:  This Section derives from 40 CFR 141.2 and other sources as noted.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.102  Incorporations by Reference

 

a)         Analytical Methods.  The Board incorporates by reference the following analytical methods.  The rules refer to the methods by the defined short-form names given them in this Section.

 

"AMI Turbiwell (09)" means "Continuous Measurement of Turbidity Using a SWAN AMI Turbiwell Turbidimeter" (August 10, 2009).  Available from SWAN Analytische Instrumente AG, Studbachstrasse 13, CH-8340, Hinwil, Switzerland.  Referenced in Section 611.531.  Available from the publisher; NEMI; and USEPA, OGWDW (under "Surface Water Treatment Rule (PDF)").

 

ASTM Methods.  Available from ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA  19428-2959 (610-832-9585 or https://www.astm.org/products-services/standards-and-publications.html).

 

"ASTM D511-93 A" means "Standard Test Methods for Calcium and Magnesium in Water", "Test Method A − Complexometric Titration", approved 1993, referenced in Section 611.611.

 

"ASTM D511-03 A" means "Standard Test Methods for Calcium and Magnesium in Water", "Test Method A − Complexometric Titration", approved 2003, referenced in Section 611.611.

 

"ASTM D511-09 A" means "Standard Test Methods for Calcium and Magnesium in Water", "Test Method A − Complexometric Titration", approved 2009, referenced in Section 611.611.

 

"ASTM D511-14 A" means "Standard Test Methods for Calcium and Magnesium in Water", "Test Method A − Complexometric Titration", approved 2014, referenced in Section 611.611.

 

"ASTM D511-93 B" means "Standard Test Methods for Calcium and Magnesium in Water", "Test Method B − Atomic Absorption Spectrophotometric", approved 1993, referenced in Section 611.611.

 

"ASTM D511-03 B" means "Standard Test Methods for Calcium and Magnesium in Water", "Test Method B − Atomic Absorption Spectrophotometric", approved 2003, referenced in Section 611.611.

 

"ASTM D511-09 B" means "Standard Test Methods for Calcium and Magnesium in Water", "Test Method B − Atomic Absorption Spectrophotometric", approved 2009, referenced in Section 611.611.

 

"ASTM D511-14 B" means "Standard Test Methods for Calcium and Magnesium in Water", "Test Method B − Atomic Absorption Spectrophotometric", approved 2014, referenced in Section 611.611.

 

"ASTM D515-88 A" means "Standard Test Methods for Phosphorus in Water", "Test Method A − Colorimetric Ascorbic Acid Reduction", approved August 19, 1988, referenced in Section 611.611.

 

"ASTM D859-94" means "Standard Test Method for Silica in Water", approved 1994, referenced in Section 611.611.

 

"ASTM D859-00" means "Standard Test Method for Silica in Water", approved 2000, referenced in Section 611.611.

 

"ASTM D859-05" means "Standard Test Method for Silica in Water", approved 2005, referenced in Section 611.611.

 

"ASTM D859-10" means "Standard Test Method for Silica in Water", approved 2010, referenced in Section 611.611.

 

"ASTM D859-16" means "Standard Test Method for Silica in Water", approved 2016, referenced in Section 611.611.

 

"ASTM D1067-92 B" means "Standard Test Methods for Acidity or Alkalinity in Water", "Test Method B − Electrometric or Color-Change Titration", approved May 15, 1992, referenced in Section 611.611.

 

"ASTM D1067-02 B" means "Standard Test Methods for Acidity or Alkalinity in Water", "Test Method B − Electrometric or Color-Change Titration", approved in 2002, referenced in Section 611.611.

 

"ASTM D1067-06 B" means "Standard Test Methods for Acidity or Alkalinity in Water", "Test Method B − Electrometric or Color-Change Titration", approved in 2006, referenced in Section 611.611.

 

"ASTM D1067-11 B" means "Standard Test Methods for Acidity or Alkalinity in Water", "Test Method B − Electrometric or Color-Change Titration", approved in 2011, referenced in Section 611.611.

 

"ASTM D1067-16 B" means "Standard Test Methods for Acidity or Alkalinity in Water", "Test Method B − Electrometric or Color-Change Titration", approved in 2006, referenced in Section 611.611.

 

"ASTM D1125-95 (1999) A" means "Standard Test Methods for Electrical Conductivity and Resistivity of Water", "Test Method A − Field and Routine Laboratory Measurement of Static (Non-Flowing) Samples", approved 1995, reapproved 1999, referenced in Section 611.611.

 

"ASTM D1179-93 B" means "Standard Test Methods for Fluoride in Water", "Test Method B − Ion Selective Electrode", approved 1993, referenced in Section 611.611.

 

"ASTM D1179-99 B" means "Standard Test Methods for Fluoride in Water", "Test Method B − Ion Selective Electrode", approved 1999, referenced in Section 611.611.

 

"ASTM D1179-04 B" means "Standard Test Methods for Fluoride in Water", "Test Method B − Ion Selective Electrode", approved 2004, referenced in Section 611.611.

 

"ASTM D1179-10 B" means "Standard Test Methods for Fluoride in Water", "Test Method B − Ion Selective Electrode", approved 2010, referenced in Section 611.611.

 

"ASTM D1179-16 B" means "Standard Test Methods for Fluoride in Water", "Test Method B − Ion Selective Electrode", approved 2010, referenced in Section 611.611.

 

"ASTM D1253-86" means "Standard Test Method for Residual Chlorine in Water", reapproved 1992, referenced in Section 611.381.

 

"ASTM D1253-96" means "Standard Test Method for Residual Chlorine in Water", approved 1996, referenced in Section 611.381.

 

"ASTM D1253-03" means "Standard Test Method for Residual Chlorine in Water", approved 2003, referenced in Sections 611.381 and 611.531.

 

"ASTM D1253-08" means "Standard Test Method for Residual Chlorine in Water", approved 2008, referenced in Sections 611.381 and 611.531.

 

"ASTM D1253-14" means "Standard Test Method for Residual Chlorine in Water", approved 2014, referenced in Sections 611.381 and 611.531.

 

"ASTM D1293-95" means "Standard Test Methods for pH of Water", approved 1995, referenced in Section 611.611.

 

"ASTM D1293-99" means "Standard Test Methods for pH of Water", approved 1999, referenced in Section 611.611.

 

"ASTM D1293-12" means "Standard Test Methods for pH of Water", approved 2012, referenced in Section 611.611.

 

"ASTM D1293-18" means "Standard Test Methods for pH of Water", approved 2018, referenced in Section 611.611.

 

"ASTM D1688-95 A" means "Standard Test Methods for Copper in Water", "Test Method A − Atomic Absorption, Direct", approved 1995, referenced in Section 611.611.

 

"ASTM D1688-02 A" means "Standard Test Methods for Copper in Water", "Test Method A − Atomic Absorption, Direct", approved 2002, referenced in Section 611.611.

 

"ASTM D1688-07 A" means "Standard Test Methods for Copper in Water", "Test Method A − Atomic Absorption, Direct", approved 2007, referenced in Section 611.611.

 

"ASTM D1688-12 A" means "Standard Test Methods for Copper in Water", "Test Method A − Atomic Absorption, Direct", approved 2012, referenced in Section 611.611.

 

"ASTM D1688-17 A" means "Standard Test Methods for Copper in Water", "Test Method A − Atomic Absorption, Direct", approved 2017, referenced in Section 611.611.

 

"ASTM D1688-95 C" means "Standard Test Methods for Copper in Water", "Test Method C − Atomic Absorption, Graphite Furnace", approved 1995, referenced in Section 611.611.

 

"ASTM D1688-02 C" means "Standard Test Methods for Copper in Water", "Test Method C − Atomic Absorption, Graphite Furnace", approved 2002, referenced in Section 611.611.

 

"ASTM D1688-07 C" means "Standard Test Methods for Copper in Water", "Test Method C − Atomic Absorption, Graphite Furnace", approved 2007, referenced in Section 611.611.

 

"ASTM D1688-12 C" means "Standard Test Methods for Copper in Water", "Test Method C − Atomic Absorption, Graphite Furnace", approved 2012, referenced in Section 611.611.

 

"ASTM D1688-17 C" means "Standard Test Methods for Copper in Water", "Test Method C − Atomic Absorption, Graphite Furnace", approved 2017, referenced in Section 611.611.

 

"ASTM D2036-98 A" means "Standard Test Methods for Cyanide in Water", "Test Method A − Total Cyanides after Distillation", approved 1998, referenced in Section 611.611.

 

"ASTM D2036-06 A" means "Standard Test Methods for Cyanide in Water", "Test Method A − Total Cyanides after Distillation", approved 2006, referenced in Section 611.611.

 

"ASTM D2036-98 B" means "Standard Test Methods for Cyanide in Water", "Test Method B − Cyanides Amenable to Chlorination by Difference", approved 1998, referenced in Section 611.611.

 

"ASTM D2036-06 B" means "Standard Test Methods for Cyanide in Water", "Test Method B − Cyanides Amenable to Chlorination by Difference", approved 2006, referenced in Section 611.611.

 

"ASTM D2459-72" means "Standard Test Method for Gamma Spectrometry in Water", approved July 28, 1972, discontinued 1988, referenced in Section 611.720.

 

"ASTM D2460-97" means "Standard Test Method for Radionuclides of Radium in Water", approved 1997, referenced in Section 611.720.

 

"ASTM D2460-07" means "Standard Test Method for Radionuclides of Radium in Water", approved 2007, referenced in Section 611.720.

 

"ASTM D2907-97" means "Standard Test Methods for Microquantities of Uranium in Water by Fluorometry", approved 1997, referenced in Section 611.720.

 

"ASTM D2972-97 B" means "Standard Test Methods for Arsenic in Water", "Test Method B − Atomic Absorption, Hydride Generation", approved 1997, referenced in Section 611.611.

 

"ASTM D2972-03 B" means "Standard Test Methods for Arsenic in Water", "Test Method B − Atomic Absorption, Hydride Generation", approved 2003, referenced in Section 611.611.

 

"ASTM D2972-15 B" means "Standard Test Methods for Arsenic in Water", "Test Method B − Atomic Absorption, Hydride Generation", approved 2015, referenced in Section 611.611.

 

"ASTM D2972-97 C" means "Standard Test Methods for Arsenic in Water", "Test Method C − Atomic Absorption, Graphite Furnace", approved 1997, referenced in Section 611.611.

 

"ASTM D2972-03 C" means "Standard Test Methods for Arsenic in Water", "Test Method C − Atomic Absorption, Graphite Furnace", approved 2003, referenced in Section 611.611.

 

"ASTM D2972-15 C" means "Standard Test Methods for Arsenic in Water", "Test Method C − Atomic Absorption, Graphite Furnace", approved 2015, referenced in Section 611.611.

 

"ASTM D3223-97" means "Standard Test Method for Total Mercury in Water", approved 1997, referenced in Section 611.611.

 

"ASTM D3223-02" means "Standard Test Method for Total Mercury in Water", approved 2002, referenced in Section 611.611.

 

"ASTM D3223-12" means "Standard Test Method for Total Mercury in Water", approved 2012, referenced in Section 611.611.

 

"ASTM D3223-17" means "Standard Test Method for Total Mercury in Water", approved 2017, referenced in Section 611.611.

 

"ASTM D3454-97" means "Standard Test Method for Radium-226 in Water", approved 1997, referenced in Section 611.720.

 

"ASTM D3454-05" means "Standard Test Method for Radium-226 in Water", approved 2005, referenced in Section 611.720.

"ASTM D3454-18" means "Standard Test Method for Radium-226 in Water", approved 2005, referenced in Section 611.720.

 

"ASTM D3559-96 D" means "Standard Test Methods for Lead in Water", "Test Method D − Atomic Absorption, Graphite Furnace", approved August 6, 1990, referenced in Section 611.611.

 

"ASTM D3559-03 D" means "Standard Test Methods for Lead in Water", "Test Method D − Atomic Absorption, Graphite Furnace", approved 2003, referenced in Section 611.611.

 

"ASTM D3559-08 D" means "Standard Test Methods for Lead in Water", "Test Method D − Atomic Absorption, Graphite Furnace", approved 2008, referenced in Section 611.611.

 

"ASTM D3559-15 D" means "Standard Test Methods for Lead in Water", "Test Method D − Atomic Absorption, Graphite Furnace", approved 2015, referenced in Section 611.611.

 

"ASTM D3645-97 B" means "Standard Test Methods for Beryllium in Water", "Method B − Atomic Absorption, Graphite Furnace", approved 1997, referenced in Section 611.611.

 

"ASTM D3645-03 B" means "Standard Test Methods for Beryllium in Water", "Method B − Atomic Absorption, Graphite Furnace", approved 2003, referenced in Section 611.611.

 

"ASTM D3645-08 B" means "Standard Test Methods for Beryllium in Water", "Method B − Atomic Absorption, Graphite Furnace", approved 2008, referenced in Section 611.611.

 

"ASTM D3645-15 B" means "Standard Test Methods for Beryllium in Water", "Method B − Atomic Absorption, Graphite Furnace", approved 2015, referenced in Section 611.611.

 

"ASTM D3649-91" means "Standard Test Method for High-Resolution Gamma-Ray Spectrometry of Water", approved 1991, referenced in Section 611.720.

 

"ASTM D3649-98a" means "Standard Test Method for High-Resolution Gamma-Ray Spectrometry of Water", approved 1998, referenced in Section 611.720.

 

"ASTM D3649-06" means "Standard Test Method for High-Resolution Gamma-Ray Spectrometry of Water", approved 2006, referenced in Section 611.720.

 

"ASTM D3697-92" means "Standard Test Method for Antimony in Water", approved 1992, referenced in Section 611.611.

 

"ASTM D3697-02" means "Standard Test Method for Antimony in Water", approved 2002, referenced in Section 611.611.

 

"ASTM D3697-07" means "Standard Test Method for Antimony in Water", approved 2007, referenced in Section 611.611.

 

"ASTM D3697-12" means "Standard Test Method for Antimony in Water", approved 2012, referenced in Section 611.611.

 

"ASTM D3697-17" means "Standard Test Method for Antimony in Water", approved 2017, referenced in Section 611.611.

 

"ASTM D3859-98 A" means "Standard Test Methods for Selenium in Water", "Method A − Atomic Absorption, Hydride Method", approved 1998, referenced in Section 611.611.

 

"ASTM D3859-03 A" means "Standard Test Methods for Selenium in Water", "Method A − Atomic Absorption, Hydride Method", approved 2003, referenced in Section 611.611.

 

"ASTM D3859-08 A" means "Standard Test Methods for Selenium in Water", "Method A − Atomic Absorption, Hydride Method", approved 2008, referenced in Section 611.611.

 

"ASTM D3859-15 A" means "Standard Test Methods for Selenium in Water", "Method A − Atomic Absorption, Hydride Method", approved 2015, referenced in Section 611.611.

 

"ASTM D3859-98 B" means "Standard Test Methods for Selenium in Water", "Method B − Atomic Absorption, Graphite Furnace", approved 1998, referenced in Section 611.611.

 

"ASTM D3859-03 B" means "Standard Test Methods for Selenium in Water", "Method B − Atomic Absorption, Graphite Furnace", approved 2003, referenced in Section 611.611.

 

"ASTM D3859-08 B" means "Standard Test Methods for Selenium in Water", "Method B − Atomic Absorption, Graphite Furnace", approved 2008, referenced in Section 611.611.

 

"ASTM D3859-15 B" means "Standard Test Methods for Selenium in Water", "Method B − Atomic Absorption, Graphite Furnace", approved 2015, referenced in Section 611.611.

 

"ASTM D3867-90 A" means "Standard Test Methods for Nitrite-Nitrate in Water", "Test Method A − Automated Cadmium Reduction", approved 1990, referenced in Section 611.611.

 

"ASTM D3867-90 B" means "Standard Test Methods for Nitrite-Nitrate in Water", "Test Method B − Manual Cadmium Reduction", approved January 10, 1990, referenced in Section 611.611.

 

"ASTM D3972-97" means "Standard Test Method for Isotopic Uranium in Water by Radiochemistry", approved 1997, referenced in Section 611.720.

 

"ASTM D3972-02" means "Standard Test Method for Isotopic Uranium in Water by Radiochemistry", approved 2002, referenced in Section 611.720.

 

"ASTM D3972-09" means "Standard Test Method for Isotopic Uranium in Water by Radiochemistry", approved 2009, referenced in Section 611.720.

 

"ASTM D4107-91" means "Standard Test Method for Tritium in Drinking Water", approved 1991, referenced in Section 611.720.

 

"ASTM D4107-98" means "Standard Test Method for Tritium in Drinking Water", approved 1998, referenced in Section 611.720.

 

"ASTM D4107-08" means "Standard Test Method for Tritium in Drinking Water", approved 2008, referenced in Section 611.720.

 

"ASTM D4107-20" means "Standard Test Method for Tritium in Drinking Water", approved 2020, referenced in Section 611.720.

 

"ASTM D4327-97" means "Standard Test Method for Anions in Water by Ion Chromatography", approved 1997, referenced in Section 611.611.

 

"ASTM D4327-03" means "Standard Test Method for Anions in Water by Ion Chromatography", approved 2003, referenced in Section 611.611.

 

"ASTM D4327-11" means "Standard Test Method for Anions in Water by Ion Chromatography", approved 2011, referenced in Section 611.611.

 

"ASTM D4327-17" means "Standard Test Method for Anions in Water by Ion Chromatography", approved 2017, referenced in Section 611.611.

 

"ASTM D4785-93" means "Standard Test Method for Low-Level Iodine-131 in Water", approved 1993, referenced in Section 611.720.

 

"ASTM D4785-00a" means "Standard Test Method for Low-Level Iodine-131 in Water", approved 2000, referenced in Section 611.720.

 

"ASTM D4785-08" means "Standard Test Method for Low-Level Iodine-131 in Water", approved 2008, referenced in Section 611.720.

 

"ASTM D4785-20" means "Standard Test Method for Low-Level Iodine-131 in Water", approved 2020, referenced in Section 611.720.

 

"ASTM D5174-97" means "Standard Test Method for Trace Uranium in Water by Pulsed-Laser Phosphorimetry", approved 1997, referenced in Section 611.720.

 

"ASTM D5174-02" means "Standard Test Method for Trace Uranium in Water by Pulsed-Laser Phosphorimetry", approved 2002, referenced in Section 611.720.

 

"ASTM D5174-07" means "Standard Test Method for Trace Uranium in Water by Pulsed-Laser Phosphorimetry", approved 2007, referenced in Section 611.720.

 

"ASTM D5317-93" means "Standard Test Method for Determination of Chlorinated Organic Acid Compounds in Water by Gas Chromatography with an Electron Capture Detector", approved 1993, referenced in Section 611.645.

 

"ASTM D5317-98(2003)" means "Standard Test Method for Determination of Chlorinated Organic Acid Compounds in Water by Gas Chromatography with an Electron Capture Detector", approved 1998 (reapproved 2003), referenced in Section 611.645.

 

"ASTM D5317-20" means "Standard Test Method for Determination of Chlorinated Organic Acid Compounds in Water by Gas Chromatography with an Electron Capture Detector", approved 2020, referenced in Section 611.645.

 

"ASTM D5673-03" means "Standard Test Method for Elements in Water by Inductively Coupled Plasma-Mass Spectrometry", approved 2003, referenced in Section 611.720.

 

"ASTM D5673-05" means "Standard Test Method for Elements in Water by Inductively Coupled Plasma-Mass Spectrometry", approved 2005, referenced in Section 611.720.

 

"ASTM D5673-10" means "Standard Test Method for Elements in Water by Inductively Coupled Plasma-Mass Spectrometry", approved 2010, referenced in Section 611.720.

 

"ASTM D5673-16" means "Standard Test Method for Elements in Water by Inductively Coupled Plasma-Mass Spectrometry", approved 2016, referenced in Section 611.720.

 

"ASTM D6239-09" means "Standard Test Method for Uranium in Drinking Water by High-Resolution Alpha-Liquid-Scintillation Spectrometry", approved 2009, referenced in Section 611.720.

 

"ASTM D6508-00(2005)" means "Standard Test Method for Determination of Dissolved Inorganic Anions in Aqueous Matrices Using Capillary Ion Electrophoresis and Chromate Electrolyte", approved 2000 (revised 2005), referenced in Section 611.611.

 

"ASTM D6508-15" means "Standard Test Method for Determination of Dissolved Inorganic Anions in Aqueous Matrices Using Capillary Ion Electrophoresis and Chromate Electrolyte", approved 2015, referenced in Section 611.611.

 

"ASTM D6581-00" means "Standard Test Method for Bromate, Bromide, Chlorate, and Chlorite in Drinking Water by Chemically Suppressed Ion Chromatography", approved 2000, referenced in Section 611.381.

 

"ASTM D6581-08 A" means "Standard Test Method for Bromate, Bromide, Chlorate, and Chlorite in Drinking Water by Suppressed Ion Chromatography", "Test Method A − Chemically Suppressed Ion Chromatography", approved 2008, referenced in Section 611.381.

 

"ASTM D6581-08 B" means "Standard Test Method for Bromate, Bromide, Chlorate, and Chlorite in Drinking Water by Suppressed Ion Chromatography", "Test Method B − Electrolytically Suppressed Ion Chromatography", approved 2008, referenced in Section 611.381.

 

"ASTM D6888-04" means "Standard Test Method for Available Cyanide with Ligand Displacement and Flow Injection Analysis (FIA) Utilizing Gas Diffusion Separation and Amperometric Detection", approved 2004, referenced in Section 611.611.

 

"ASTM D6919-03" means "Standard Test Method for Determination of Dissolved Alkali and Alkaline Earth Cations and Ammonium in Water and Wastewater by Ion Chromatography", approved 2003, referenced in Section 611.611.

 

"ASTM D6919-09" means "Standard Test Method for Determination of Dissolved Alkali and Alkaline Earth Cations and Ammonium in Water and Wastewater by Ion Chromatography", approved 2009, referenced in Section 611.611.

 

"ASTM D6919-17" means "Standard Test Method for Determination of Dissolved Alkali and Alkaline Earth Cations and Ammonium in Water and Wastewater by Ion Chromatography", approved 2017, referenced in Section 611.611.

 

"ASTM D7283-17" means "Standard Test Method for Alpha and Beta Activity in Water by Liquid Scintillation Counting", approved 2017, referenced in Section 611.720.

 

"ATI Orion Technical Bulletin 601 (94)" means "Standard Method of Testing for Nitrate in Drinking Water" (July 1994), Part Number 221890-001.  Available from Thermo-Fisher Scientific, 168 Third Ave, Waltham, MA  02451 (800-556-2323; www.thermofisher.com).  Referenced in Section 611.611.

 

"Charm Fast Phage (12)" means "Fast Phage Test:  Presence/Absence for Coliphage in Ground Water with Same Day Positive Prediction", ATP Case No. D09-0007, Version 009 (November 28, 2012).  Available from Charm Sciences, Inc., 659 Andover St., Lawrence, MA  01843-1032.  Referenced in Section 611.802 and USEPA, OGWDW (under "Ground Water Rule (PDF)").

 

"Chromocult^® (00)" means "Chromocult® Coliform Agar Presence/Absence Membrane Filter Test Method for Detection and Identification of Coliform Bacteria and Escherichia coli in Finished Waters", Version 1.0 (November 2000).  Available from EMD Millipore (division of Merck KGgA, Darmstadt, Germany), 290 Concord Road, Billerica, MA  01821 (800-645-5476 or 781-533-6000) and USEPA, OGWDW (under "Ground Water Rule (PDF)" and "Revised Total Coliforms Rules (PDF)").  Referenced in Sections 611.802 and 611.1052.

 

"E*Colite (98)" means "Alternative Test Procedure Case #D95-0007:  Charm E*Colite Presence/Absence Test for Detection and Identification of Coliform Bacteria and Escherichia coli in Drinking Water" (January 9, 1998).  Available from Charm Sciences, Inc., 659 Andover St., Lawrence, MA  01843–1032 and USEPA, OGWDW (under "Ground Water Rule (PDF)" and "Revised Total Coliforms Rules (PDF)").  Referenced in Sections 611.802 and 611.1052.

 

EML Methods.  Available from USEPA, OGWDW (listed under "Radionuclides (PDF)" by individual method numbers).

 

EML (90).  In "EML Procedures Manual", HASL 300, Volumes 1 and 2, 27^th ed. (November 1990).

 

"EML (90) Ga-01" means section 4.5.2.3, Ga-01, "Gamma Radioassay", in section 4.5.2.3, "Radiometrology", in 27^th ed.  Referenced in Section 611.720.  USEPA, OGWDW lists EML (90) Ga-01 as "4.5.2.3".

 

"EML (90) Ra-05" means Ra-05, "Radium-226 in Tap Water, Urine, and Feces", in section 4.5.4, "Radiochemical", in 27^th ed.  Referenced in Section 611.720.

 

"EML (90) Sr-01" means Sr-01, "Strontium-89", in section 4.5.4, "Radiochemical", in 27^th ed.  Referenced in Section 611.720.

 

"EML (90) Sr-02" means Sr-02, "Strontium-90", in section 4.5.4, "Radiochemical", in 27^th ed.  Referenced in Section 611.720.

 

"EML (90) U-02" means U-02, "Isotopic Uranium in Biological and Environmental Materials", in section 4.5.4, "Radiochemical", in 27^th ed.

 

"EML (90) U-04" means U-04, "Uranium in Biological and Environmental Materials", in section 4.5.4, "Radiochemical", in 27^th ed.  Referenced in Section 611.720.

 

EML (97).  In "EML Procedures Manual", HASL 300, Volumes 1 and 2, 28^th ed., Revision 0 (February 1997).  Currently available on-line from United States Department of Homeland Security, Science and Technology Directorate (formerly United States Department of Energy, Environmental Measurements Laboratory) (https://www.hsdl.org/c/view?docid=487142).

 

"EML (97) Ga-01-R" means Ga-01-R, "Gamma Radioassay", in section 4.5.2, "Radiometrology", in 28^th ed.  Referenced in Section 611.720.

 

"EML (97) Ra-04" means Ra-04-RC, "Radium-226 in Tap Water, Urine, and Feces", in section 4.5.4, "Radiochemical", in 28^th ed.  Referenced in Section 611.720.

 

"EML (97) Sr-01" means Sr-01-RC, "Strontium-89", in section 4.5.4, "Radiochemical", in 28^th ed.  Referenced in Section 611.720.

 

"EML (97) Sr-02" means Sr-02-RC, "Strontium-90", in section 4.5.4, "Radiochemical", in 28^th ed.  Referenced in Section 611.720.

 

"EML (97) U-02" means U-02-RC, "Isotopic Uranium in Biological and Environmental Materials", in section 4.5.4, "Radiochemical", in 28^th ed.

 

"EML (97) U-04" means U-04-RC, "Uranium in Biological and Environmental Materials", in section 4.5.4, "Radiochemical", in 28^th ed.  Referenced in Section 611.720.

 

"Enterolert (96)" means "Evaluation of Enterolert for Enumeration of Enterococci in Recreational Waters", Applied and Environmental Microbiology, Oct. 1996, vol. 62, no. 10, p. 3881.  Available from American Society for Microbiology, 1752 N Street N.W., Washington, DC  20036 (202-737-3600; https://journals.asm.org/doi/epdf/10.1128/aem.62.10.3881-3884.1996).  Referenced in Section 611.802.

 

BOARD NOTE:  In 40 CFR 141.402(c)(2), USEPA approved the method the above literature review describes.  The method itself is in the printed instructions to the proprietary kit available from IDEXX Laboratories, Inc., One IDEXX Drive, Westbrook, Maine  04092 (800-548-6733); https://www.idexx.com/en/water/water-products-services/enterolert/.  ASTM approved the method as "Standard Test Method for Enterococci in Water Using Enterolert^™", which is available in two versions from ASTM:  ASTM D6503-99 and ASTM D6503-99(2005).  While it is more conventional to incorporate by reference the method as presented in the kit instructions or as approved by ASTM, the Board is constrained to incorporate by reference the version that USEPA explicitly approves, which is the version the technical literature describes.

 

"Georgia Radium (04)" means "Method for the Determination of Radium-226 and Radium-228 in Drinking Water by Gamma-ray Spectrometry Using HPGE or Ge(Li) Detectors", Revision 1.2 (December 2004).  Available from Georgia Tech Research Institute, Robert Rosson, 925 Dalney Road, Atlanta, GA  30332 (404-407-6339) and USEPA, OGWDW (under "Radionuclides (PDF)").  Referenced in Section 611.720.

 

"GLI Method 2 (92)" means "Turbidity GLI Method 2" (November 2, 1992).  Available from Great Lakes Instruments, Inc., 8855 North 55^th Street, Milwaukee, WI  53223.  Also available from USEPA, OGWDW (under "Surface Water Treatment Rule (PDF)").  Referenced in Section 611.531.

 

"Guidance Manual for Filtration and Disinfection (91)" means "Guidance Manual for Compliance with the Filtration and Disinfection Requirements for Public Water Systems Using Surface Water Sources" (March 1991), EPA 570/3-91-001, USEPA, Office of Drinking Water, Criteria and Standards Division, Science and Technology Branch.  Available from NTRL (document number PB93-222933) and USEPA, NSCEP (search "570391001").  Referenced in Sections 611.111 and 611.212.

 

Hach Methods.  Available from Hach Company, P.O. Box 389, Loveland, CO  80539-0389 (800-227-4224 or www.hach.com).

 

"Hach 8026 (15)" means Hach Method 8026, "Spectrophotometric Measurement of Copper in Finished Drinking Water", Revision 1.2 (December 2015).  Referenced in Section 611.611.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Inorganic Contaminants and Other Inorganic Constituents (PDF)").

 

"Hach 8195 (18)" means Hach Method 8195, "Determination of Turbidity by Nephelometry", Revision 3.0 (March 2018).  Referenced in Section 611.531.

 

"Hach 10029 (99) (m-ColiBlue24^®)" means m-ColiBlue24^® Test, Method No. 10029, "Total Coliforms and E. coli Membrane Filtration Method with m-ColiBlue24^® Broth", Revision 2 (August 17, 1999), document number DOC316.53.001213.  Referenced in Sections 611.802 and 611.1052.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Ground Water Rule (PDF)").

 

"Hach 10133 (00) (FilterTrak)" means Hach FilterTrak Method 10133, "Determination of Turbidity by Laser Nephelometry", Revision 2.0 (January 7, 2000) in Appendix A of "Introduction to Laser Nephelometry:  An Alternative to Conventional Particulate Analysis Methods".  Referenced in Section 611.531.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Surface Water Treatment Rule (PDF)").

 

"Hach 10206 (11) (TNTplus 835/836)" means Hach TNTplus 835/836 Method 10206, "Spectrophotometric Measurement of Nitrate in Water and Wastewater", Revision 2.0 (January 2011).  Referenced in Section 611.611.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Inorganic Contaminants and Other Inorganic Constituents (PDF)").

 

"Hach 10225 (11) (SPADNS 2)" means Hach SPADNS 2 Method 10225, "Fluoride, USEPA SPADNS 2 Method 10225", Revision 2.0 (January 2011).  Referenced in Section 611.611.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Inorganic Contaminants and Other Inorganic Constituents (PDF)").

 

"Hach 10241 (15)" means Hach Method 10241, "Spectrophotometric Measurement of Free Chlorine (Cl2) in Finished Drinking Water", Revision 1.2 (November 2015).  Referenced in Sections 611.381 and 611.531.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Disinfection Byproduct Rules (PDF)").

 

"Hach 10258 (16)" means Hach Method 10258, "Determination of Turbidity by 360° Nephelometry", Revision 1.0 (January 2016).  Referenced in Section 611.531.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Surface Water Treatment Rule (PDF)").

 

"Hach 10258 (18)" means Hach Method 10258, "Determination of Turbidity by 360° Nephelometry", Revision 2.0 (March 2018).  Referenced in Section 611.531.

 

"Hach 10260 (13)" means Hach Method 10260, "Determination of Chlorinated Oxidants (Free and Total) in Water Using Disposable Planar Reagent-filled Cuvettes and Mesofluic Channel Colorimetry" (April 2013).  Referenced in Sections 611.381 and 611.531.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Disinfection Byproduct Rules (PDF)").

 

"Hach 10261 (15)" means Hach Method 10261, "Total Organic Carbon in Finished Drinking Water by Catalyzed Ozone Hydroxyl Radical Oxidation Infrared Analysis", Revision 1.2 (December 2015).  Referenced in Section 611.381.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Disinfection Byproduct Rules (PDF)").

 

"Hach 10267 (15)" means Hach Method 10267, "Spectrophotometric Measurement of Total Organic Carbon (TOC) in Finished Drinking Water", Revision 1.2 (December 2015).  Referenced in Section 611.381.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Disinfection Byproduct Rules (PDF)").

 

"Hach 10272 (15)" means Hach Method 10272, "Spectrophotometric Measurement of Copper in Finished Drinking Water", Revision 1.2 (December 2015).  Referenced in Section 611.611.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Inorganic Contaminants and Other Inorganic Constituents (PDF)").

 

"ITS D99-003 (03)" means "Method # (D99-003):  Free Chlorine Species (HOCl- and OCl-) by Test Strip", Revision 3.0 (November 21, 2003).  Available from Industrial Test Systems, Inc., 1875 Langston St., Rock Hill, SC  29730 (803-329-2999) and USEPA, OGWDW (under "Disinfection Byproduct Rules (PDF)").  Referenced in Section 611.381.

 

"Kelada 01 (01)" means "Method Kelada-01:  Kelada Automated Test Methods for Total Cyanide, Acid Dissociable Cyanide, and Thiocyanate", Revision 1.2 (August 2001), USEPA Office of Water, document number EPA 821/B-01-009.  Available from NTRL (document number PB2001-108275) and USEPA, OGWDW (under "Inorganic Contaminants and Other Inorganic Constituents (PDF)").  Referenced in Section 611.611.

 

Lovibond Methods.  Available from Tintometer, Inc., 6456 Parkland Drive, Sarasota, FL  34243 (800-922-5242, 941-758-6410, or www.lovibond.us) and USEPA, OGWDW (under "Surface Water Treatment Rule (PDF)").

 

"Lovibond PTV 1000 (16)" means "Continuous Measurement of Drinking Water Turbidity Using a Lovibond PTV 1000 White Light LED Turbidimeter", Revision 1.0 (December 20, 2016).  Referenced in Section 611.531.

 

"Lovibond PTV 2000 (16)" means "Continuous Measurement of Drinking Water Turbidity Using a Lovibond PTV 2000 660-nm LED Turbidimeter", Revision 1.0 (December 20, 2016).  Referenced in Section 611.531.

 

"Lovibond TB 3500 (21)" means "Measurement of Drinking Water Turbidity of a Captured Sample Using a Lovibond White Light LED Portable Turbidimeter", Revision 1.0 (2021).  Referenced in Section 611.531.

 

"Lovibond TB 5000 (21)" means "Measurement of Drinking Water Turbidity of a Captured Sample Using a Lovibond 660-nm LED Portable Turbidimeter", Revision 1.0 (2021).  Referenced in Section 611.531.

 

"Lovibond PTV 6000 (16)" means "Continuous Measurement of Drinking Water Turbidity Using a Lovibond PTV 6000 Laser Turbidimeter", Revision 1.0 (December 20, 2016).  Referenced in Section 611.531.

 

"Lovibond TB 6000 (21)" means "Measurement of Drinking Water Turbidity of a Captured Sample Using a Lovibond Portable Laser Turbidimeter", Revision 1.0 (2021).  Referenced in Section 611.531.

 

Maine Methods.  Available from Maine Health and Environmental Testing Laboratory, 221 State Street, Augusta, ME  04333 (207-287-2727).

 

"ME355.01 (09)" means "Determination of Cyanide in Drinking Water by GC/MS Headspace Analysis", Revision 1 (May 26, 2009).  Referenced in Section 611.611.  Also available from NEMI and USEPA, OGWDW (under "Inorganic Contaminants and Other Inorganic Constituents (PDF)").

 

"ME 531 (19)" means "Measurement or N-Methylcarbamoyloximes and N-Methylcarbamates in Drinking Water by LC-MS/MS", version 1.0 (September 2019).  Referenced in Section 611.645.

 

Mitchell Methods.  Available from Leck Mitchell, PhD, PE, 656 Independence Valley Dr., Grand Junction, CO  81507 (920-244-8661); , NEMI (except for Mitchell M5331 (16)); and USEPA, OGWDW (under "Surface Water Treatment Rule (PDF)").

 

"Mitchell M5271 (09)" means Mitchell Method M5271, "Determination of Turbidity by Laser Nephelometry", Revision 1.1 (March 5, 2009).  Referenced in Section 611.531.

 

"Mitchell M5331 (09)" means Mitchell Method M5331, "Determination of Turbidity by Laser Nephelometry", Revision 1.1 (March 2009).  Referenced in Section 611.531.

 

"Mitchell M5331 (16)" means Mitchell Method M5331, "Determination of Turbidity by Laser Nephelometry", Revision 1.2 (February 2016).  Referenced in Section 611.531.

 

"Modified Colitag^™ (09)" means "Modified Colitag^™ Test Method for Simultaneous Detection of E. coli and other Total Coliforms in Water", (ATP D05-0035) (August 28, 2009).  Available from CPI International, Inc., 5580 Skylane Blvd., Santa Rosa, CA  95403 (800-878-7654; www.cpiinternational.com); NEMI; and USEPA, OGWDW (under "Ground Water Rule (PDF)" and "Revised Totasl Coliforms Rules (PDF)").  Referenced in Sections 611.802 and 611.1052.

 

"Modified Colitag™ (20)" means "Modified Colitag™ Test Method for Simultaneous Detection of Total Coliforms and E. coli in Water", Version 2.0, (June 2020).  Available from Neogen Corporation, 620 Lesher Place, Lansing, MI  48912.  Referenced in Sections 611.802 and 611.1052.

 

"NBS Handbook 69 (63)" means "Maximum Permissible Body Burdens and Maximum Permissible Concentrations of Radionuclides in Air and in Water for Occupational Exposure" (August 1963), U.S. Department of Commerce, National Bureau of Standards.  Available from U.S. Nuclear Regulatory Commission, One White Flint North, 115 Rockville Pike, Rockville, MD  20852-2738; https://www.nrc.gov/docs/ML2020/ML20206L091.pdf or Oak Ridge Associated Universities (ORAU), 100 ORAU Way, Oak Ridge, TN  37830 (865-576-3146); https://www.orau.org/health-physics-museum/files/library/nbs/nbs-69.pdf.  Referenced in Sections 611.101 and 611.330.

BOARD NOTE:  The 1963 version of National Bureau of Standards Handbook 69 modifies the 1959 publication of the National Committee on Radiation Protection, NCRP Report No. 22, of the same title.  The version available on the NCRP website is the 1959 document.

 

"NECi Nitrate Reductase (06)" means "Method for Nitrate Reductase Nitrate-Nitrogen Analysis of Drinking Water", Version 1.0, Revision 2.0 (February 1, 2016).  Available from Superior Enzymes Inc., 334 Hecla Street, Lake Linden, Michigan  49945 (906-296-1115).  Also available from USEPA, OGWDW (under "Inorganic Contaminants and Other Inorganic Constituents (PDF)").  Referenced in Section 611.611.

 

"New Jersey Radium (90)" means "Determination of Ra-228 in Drinking Water" (August 1990), New Jersey Department of Environmental Protection, Division of Environmental Quality, Bureau of Radiation and Inorganic Analytical Services.  Available from publisher, 9 Ewing Street, Trenton, NJ  08625.  Referenced in Section 611.720.

 

"New York Radium (82)" means "Determination of 226Ra and 228Ra, Ra-02" (January 1980, revised June 1982), Radiological Sciences Institute, Center for Laboratories and Research, New York State Department of Health.  Available from publisher, Empire State Plaza, Albany, NY  12201.  Referenced in Section 611.720.

 

"OIA-1677 (04)" means "Method OIA-1677 DW, Available Cyanide by Flow Injection, Ligand Exchange, and Amperometry" (January 2004), document number EPA 821/R-04/001.  Referenced in Section 611.611.  Available from; USEPA, NSCEP (search "821R04001"); and USEPA, OGWDW (under "Inorganic Contaminants and Other Inorganic Constituents (PDF)").

 

"Orion AQ4500 (09)" means "Determination of Turbidity by LED Nephelometry", Revision 5 (March 12, 2009).  Available from Thermo-Fisher Scientific, 168 Third Ave, Waltham, MA  02451 (800-556-2323 or www.thermofisher.com); NEMI; and USEPA, OGWDW (under "Surface Water Treatment Rule (PDF)").  Referenced in Section 611.531.

 

Palintest Methods.  Available from Palintest, Ltd., 600 Corporate Circle, Suite F, Golden, CO  80401 (720-221-6878).

 

"Palintest 1001 (99)" means "Method 1001:  Lead in Drinking Water by Differential Pulse Anodic Stripping Voltammetry", August 1999, referenced in Section 611.611.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Inorganic Contaminants and Other Inorganic Constituents (PDF)").

 

"Palintest 1001 (20)" means "Method 1001:  Lead in Drinking Water by Differential Pulse Anodic Stripping Voltammetry", May 2020, Revision 1.1, referenced in Section 611.611.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Inorganic Contaminants and Other Inorganic Constituents (PDF)").

 

"Palintest ChlordioX Plus (13)" means "Chlorine Dioxide and Chlorite in Drinking Water by Amperometry using Disposable Sensors", November 2013, referenced in Sections 611.381 and 611.531.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Disinfection Byproduct Rules (PDF)").

 

"Palintest ChlordioX Plus (20)" means "Chlorine Dioxide and Chlorite in Drinking Water by Amperometry using Disposable Sensors", Version 1.1 (February 2020), referenced in Sections 611.381 and 611.531.

 

"Palintest ChloroSense (09)" means "Measurement of Free and Total Chlorine in Drinking Water by Palintest ChloroSense", September 2009, referenced in Sections 611.381 and 611.531.  BOARD NOTE:  Also available from NEMI and USEPA, OGWDW (under "Disinfection Byproduct Rules (PDF)").

 

"Palintest ChloroSense (20)" means "Free and Total Chlorine in Drinking Water by Amperometry using disposable sensors", Revision 1.1 (February 2020), referenced in Sections 611.381 and 611.531.

 

"QuikChem 10-204-00-1-X (00)" means "Digestion and distillation of total cyanide in drinking and wastewaters using MICRO DIST and determination of cyanide by flow injection analysis", Revision 2.1 (November 30, 2000).  Available from Lachat Instruments, 6645 W. Mill Rd., Milwaukee, WI  53218 (414–358–4200) and USEPA, OGWDW (under "Inorganic Contaminants and Other Inorganic Constituents (PDF)").  Referenced in Section 611.611.

 

"RAPID'E. coli (20)" means "Simultaneous Detection of Total Coliform Bacteria and Escherichia coli Using RAPID'E. coli 2 (REC2) in Drinking Water" (May 2020).  Available from Bio-Rad Laboratories, 2000 Nobel Drive, Hercules, California  94547.  Referenced in Sections 611.802 and 611.1052.

 

"Readycult^® (07)" means "Readycult Coliforms 100 Presence/Absence Test for Detection and Identification of Coliform Bacteria and Escherichia coli in Finished Waters", Version 1.1 (January 2007).  Available from EMD Millipore (division of Merck KGgA, Darmstadt, Germany), 290 Concord Road, Billerica, MA  01821 (800-645-5476 or 781-533-6000) and USEPA, OGWDW (under "Ground Water Rule (PDF)" and "Revised Total Coliforms Rules (PDF)").  Referenced in Sections 611.802 and 611.1052.

 

"SimPlate (00)" means "IDEXX SimPlate^™ HPC Test Method for Heterotrophs in Water" (November 29, 2000).  Available from IDEXX Laboratories, Inc., One IDEXX Drive, Westbrook, Maine  04092 (800-548-6733).  Referenced in Section 611.531.

 

SM Methods.  Approved as the version in the indicated editions of "Standard Methods for the Examination of Water and Wastewater". Available from the American Public Health Association, 800 I Street NW, Washington, DC  20005, 202-777-2742; American Water Works Association, 6666 West Quincy Ave., Denver, CO  80235, 303-794-7711, https://www.awwa.org/Publications/Standard-Methods; Water Environment Federation, 601 Wythe Street, Alexandria, VA  22314, 800-666-0206, www.wef.org; or Standard Methods Online, 800-633-4931, www.standardmethods.org.

 

BOARD NOTE:  The Board did not separately list versions of methods from Standard Methods Online also appearing in a printed edition.  Using a method in the approved version as available from Standard Methods Online is acceptable.

 

"SM 302 (71)" means Method 302, "Gross Alpha and Gross Beta Radioactivity in Water (Total, Suspended, and Dissolved)", only the version in the 13^th edition.  Referenced in Section 611.720.

 

"SM 303 (71)" means Method 303, "Total Radioactive Strontium and Strontium 90 in Water", only the version in the 13^th edition.  Referenced in Section 611.720.

 

"SM 304 (71)" means Method 304, "Radium in Water by Precipitation", only the version in the 13^th edition.  Referenced in Section 611.720.

 

"SM 305 (71)" means Method 305, "Radium 226 by Radon in Water (Soluble, Suspended, and Total)", only the version in the 13^th edition.  Referenced in Section 611.720.

 

"SM 306 (71)" means Method 306, "Tritium in Water", in "Standard Methods for the Examination of Water and Wastewater", only the version in the 13^th edition.  Referenced in Section 611.720.

 

"SM 2130 B (88)" means Method 2130 B, "Turbidity", "Nephelometric Method", only the version in the 18^th edition.  Referenced in Section 611.531.

 

"SM 2130 B (94)" means Method 2130 B, "Turbidity", "Nephelometric Method", only the version in the 19^th and 20^th editions.  Referenced in Section 611.531.

 

"SM 2130 B (01)" means Method 2130 B, "Turbidity", "Nephelometric Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.531.

 

"SM 2320 B (91)" means Method 2320 B, "Alkalinity", "Titration Method", only the version in the 18^th and 19^th editions.  Referenced in Section 611.611.

 

"SM 2320 B (97)" means Method 2320 B, "Alkalinity", "Titration Method", only the version in the 20^th, 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.611.

 

"SM 2510 B (91)" means Method 2510 B, "Conductivity", "Laboratory Method", only the version in the 18^th and 19^th editions.  Referenced in Section 611.611.

 

"SM 2510 B (97)" means Method 2510 B, "Conductivity", "Laboratory Method", only the version in the 20^th, 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.611.

 

"SM 2550 (88)" means Method 2550, "Temperature, Laboratory and Field Methods", only the version in the 18^th edition.  Referenced in Section 611.611.

 

"SM 2550 (93)" means Method 2550, "Temperature, Laboratory and Field Methods", only the version in the 19^th and 20^th editions.  Referenced in Section 611.611.

 

"SM 2550 (00)" means Method 2550, "Temperature, Laboratory and Field Methods", only the version in the 21^st edition.  Referenced in Section 611.611.

 

"SM 2550 (10)" means Method 2550, "Temperature, Laboratory and Field Methods", only the version in the 22^nd and 23^rd editions.  Referenced in Section 611.611.

 

"SM 3111 B (89)" means Method 3111 B, "Metals by Flame Atomic Absorption Spectrometry", "Direct Air-Acetylene Flame Method", only the version in the 18^th edition.  Referenced in Sections 611.611 and 611.612.

 

"SM 3111 B (93)" means Method 3111 B, "Metals by Flame Atomic Absorption Spectrometry", "Direct Air-Acetylene Flame Method", only the version in the 19^th edition.  Referenced in Sections 611.611 and 611.612.

 

"SM 3111 B (99)" means Method 3111 B, "Metals by Flame Atomic Absorption Spectrometry", "Direct Air-Acetylene Flame Method".  Referenced in Sections 611.611 and 611.612.

 

"SM 3111 D (89)" means Method 3111 D, "Metals by Flame Atomic Absorption Spectrometry", "Direct Nitrous Oxide-Acetylene Flame Method", only the version in the 19^th edition.  Referenced in Section 611.611.

 

"SM 3111 D (93)" means Method 3111 D, "Metals by Flame Atomic Absorption Spectrometry", "Direct Nitrous Oxide-Acetylene Flame Method", only the version in the 19^th edition.  Referenced in Section 611.611.

 

"SM 3111 D (99)" means Method 3111 D, "Metals by Flame Atomic Absorption Spectrometry", "Direct Nitrous Oxide-Acetylene Flame Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.611.

 

"SM 3112 B (88)" means Method 3112 B, "Metals by Cold-Vapor Atomic Absorption Spectrometry", "Cold-Vapor Atomic Absorption Spectrometric Method", only the version in the 18^th edition.  Referenced in Section 611.611.

 

"SM 3112 B (93)" means Method 3112 B, "Metals by Cold-Vapor Atomic Absorption Spectrometry", "Cold-Vapor Atomic Absorption Spectrometric Method", only the version in the 19^th edition.  Referenced in Section 611.611.

 

"SM 3112 B (99)" means Method 3112 B, "Metals by Cold-Vapor Atomic Absorption Spectrometry", "Cold-Vapor Atomic Absorption Spectrometric Method", only the version in the 21^st edition.  Referenced in Section 611.611.

 

"SM 3112 B (09)" means Method 3112 B, "Metals by Cold-Vapor Atomic Absorption Spectrometry", "Cold-Vapor Atomic Absorption Spectrometric Method", only the version in the 22^nd and 23^rd editions.  Referenced in Section 611.611.

 

"SM 3113 B (89)" means Method 3113 B, "Metals by Electrothermal Atomic Absorption Spectrometry", "Electrothermal Atomic Absorption Spectrometric Method", only the version in the 18^th edition.  Referenced in Sections 611.611 and 611.612.

 

"SM 3113 B (93)" means Method 3113 B, "Metals by Electrothermal Atomic Absorption Spectrometry", "Electrothermal Atomic Absorption Spectrometric Method", only the version in the 19^th edition.  (The same version appears in the 20th edition but USEPA does not approve that edition.)  Referenced in Sections 611.611 and 611.612.

 

"SM 3113 B (99)" means Method 3113 B, "Metals by Electrothermal Atomic Absorption Spectrometry", "Electrothermal Atomic Absorption Spectrometric Method", only the version in the 21^st edition.  Referenced in Sections 611.611 and 611.612.

 

"SM 3113 B (04)" means Method 3113 B, "Metals by Electrothermal Atomic Absorption Spectrometry", "Electrothermal Atomic Absorption Spectrometric Method", only the version from Standard Methods Online as Method 3113 B-04.  Referenced in Sections 611.611 and 611.612.

 

"SM 3113 B (10)" means Method 3113 B, "Metals by Electrothermal Atomic Absorption Spectrometry", "Electrothermal Atomic Absorption Spectrometric Method", only the version in the 22^nd and 23^rd editions.  Referenced in Sections 611.611 and 611.612.

 

"SM 3114 B (89)" means Method 3114 B, "Metals by Hydride Generation/Atomic Absorption Spectrometry", "Manual Hydride Generation/Atomic Absorption Spectrometric Method", only the version in the 18^th edition.  Referenced in Section 611.611.

 

"SM 3114 B (93)" means Method 3114 B, "Metals by Hydride Generation/Atomic Absorption Spectrometry", "Manual Hydride Generation/Atomic Absorption Spectrometric Method", only the version in the 19^th edition.  Referenced in Section 611.611.

 

"SM 3114 B (97)" means Method 3114 B, "Metals by Hydride Generation/Atomic Absorption Spectrometry", "Manual Hydride Generation/Atomic Absorption Spectrometric Method", only the version in the 21^st edition.  (The same version appears in the 20^th edition, but USEPA does not approve that edition.)  Referenced in Section 611.611.

 

"SM 3114 B (09)" means Method 3114 B, "Metals by Hydride Generation/Atomic Absorption Spectrometry", "Manual Hydride Generation/Atomic Absorption Spectrometric Method", only the version in the 22^nd and 23^rd editions.  Referenced in Section 611.611.

 

"SM 3120 B (89)" means Method 3120 B, "Metals by Plasma Emission Spectroscopy", "Inductively Coupled Plasma (ICP) Method", only the version in the 18^th edition.  Referenced in Sections 611.611 and 611.612.

 

"SM 3120 B (93)" means Method 3120 B, "Metals by Plasma Emission Spectroscopy", "Inductively Coupled Plasma (ICP) Method", only the version in the 19^th and 20^th editions.  Referenced in Sections 611.611 and 611.612.

 

"SM 3120 B (99)" means Method 3120 B, "Metals by Plasma Emission Spectroscopy", "Inductively Coupled Plasma (ICP) Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Sections 611.611 and 611.612.

 

"SM 3125 (97)" means Method 3125, "Metals by Inductively Coupled Plasma/Mass Spectrometry", only the version in the 20^th and 21^st editions.  Referenced in Section 611.720.

 

"SM 3500-Ca B (97)" means Method 3500-Ca B, "Calcium", "EDTA Titrimetric Method", only the version in the 20^th, 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.611.

 

"SM 3500-Ca D (91)" means Method 3500-Ca D, "Calcium", "EDTA Titrimetric Method", only the version in the 18^th and 19^th editions.  Referenced in Section 611.611.

 

"SM 3500-Mg B (97)" means Method 3500-Mg B, "Magnesium", "Calculation Method", only the version in the 20^th, 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.611.

 

"SM 3500-Mg E (90)" means Method 3500-Mg E, "Magnesium", "Calculation Method", only the version in the 18^th edition.  Referenced in Section 611.611.

 

"SM 3500-Mg E (91)" means Method 3500-Mg E, "Magnesium", "Calculation Method", only the version in the 19^th edition.  Referenced in Section 611.611.

 

"SM 4110 B (90)" means Method 4110 B, "Determination of Anions by Ion Chromatography", "Ion Chromatography with Chemical Suppression of Eluent Conductivity", only the version in the 18^th edition.  Referenced in Section 611.611.

 

"SM 4110 B (91)" means Method 4110 B, "Determination of Anions by Ion Chromatography", "Ion Chromatography with Chemical Suppression of Eluent Conductivity", only the version in the 19^th edition.  Referenced in Section 611.611.

 

"SM 4110 B (97)" means Method 4110 B, "Determination of Anions by Ion Chromatography", "Ion Chromatography with Chemical Suppression of Eluent Conductivity", only the version in the 20^th edition.  Referenced in Section 611.611.

 

"SM 4110 B (00)" means Method 4110 B, "Determination of Anions by Ion Chromatography", "Ion Chromatography with Chemical Suppression of Eluent Conductivity", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.611.

 

"SM 4500-Cl D (89)" means Method 4500-Cl D, "Chlorine (Residual)", "Amperometric Titration Method", only the version in the 18^th edition.  Referenced in Section 611.531.

 

"SM 4500-Cl D (93)" means Method 4500-Cl D, "Chlorine (Residual)", "Amperometric Titration Method", only the version in the 19th and 20th editions.  Referenced in Sections 611.381 and 611.531.

 

"SM 4500-Cl D (00)" means Method 4500-Cl D, "Chlorine (Residual)", "Amperometric Titration Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Sections 611.381 and 611.531.

 

"SM 4500-Cl E (89)" means Method 4500-Cl E, "Chlorine (Residual)", "Low-Level Amperometric Titration Method", only the version in the 18^th edition.  Referenced in Section 611.531.

 

"SM 4500-Cl E (93)" means Method 4500-Cl E, "Chlorine (Residual)", "Low-Level Amperometric Titration Method", only the version in the 19^th and 20^th editions.  Referenced in Sections 611.381 and 611.531.

 

"SM 4500-Cl E (00)" means Method 4500-Cl E, "Chlorine (Residual)", "Low-Level Amperometric Titration Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Sections 611.381 and 611.531.

 

"SM 4500-Cl F (89)" means Method 4500-Cl F, "Chlorine (Residual)", "DPD Ferrous Titrimetric Method", only the version in the 18^th edition.  Referenced in Section 611.531.

 

"SM 4500-Cl F (93)" means Method 4500-Cl F, "Chlorine (Residual)", "DPD Ferrous Titrimetric Method", only the version in the 19^th and 20^th editions.  Referenced in Sections 611.381 and 611.531.

 

"SM 4500-Cl F (00)" means Method 4500-Cl F, "Chlorine (Residual)", "DPD Ferrous Titrimetric Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Sections 611.381 and 611.531.

 

"SM 4500-Cl G (89)" means Method 4500-Cl G, "Chlorine (Residual)", "DPD Colorimetric Method", only the version in the 18^th edition.  Referenced in Section 611.531.

 

"SM 4500-Cl G (93)" means Method 4500-Cl G, "Chlorine (Residual)", "DPD Colorimetric Method", only the version in the 19^th and 20^th editions.  Referenced in Sections 611.381 and 611.531.

 

"SM 4500-Cl G (00)" means Method 4500-Cl G, "Chlorine (Residual)", "DPD Colorimetric Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Sections 611.381 and 611.531.

 

"SM 4500-Cl H (89)" means Method 4500-Cl H, "Chlorine (Residual)", "Syringaldazine (FACTS) Method", only the version in the 18^th edition.  Referenced in Section 611.531.

 

"SM 4500-Cl H (93)" means Method 4500-Cl H, "Chlorine (Residual)", "Syringaldazine (FACTS) Method", only the version in the 19^th and 20^th editions.  Referenced in Sections 611.381 and 611.531.

 

"SM 4500-Cl H (00)" means Method 4500-Cl H, "Chlorine (Residual)", "Syringaldazine (FACTS) Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Sections 611.381 and 611.531.

 

"SM 4500-Cl I (89)" means Method 4500-Cl I, "Chlorine (Residual)", "Iodometric Electrode Method", only the version in the 18^th edition.  Referenced in Section 611.531.

 

"SM 4500-Cl I (93)" means Method 4500-Cl I, "Chlorine (Residual)", "Iodometric Electrode Method", only the version in the 19^th and 20^th editions.  Referenced in Sections 611.381 and 611.531.

 

"SM 4500-Cl I (00)" means Method 4500-Cl I, "Chlorine (Residual)", "Iodometric Electrode Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Sections 611.381 and 611.531.

 

"SM 4500-ClO₂ C (88)" means Method 4500-ClO₂ C, "Chlorine Dioxide", "Amperometric Method I", only the version in the 18^th edition.  Referenced in Sections 611.381 and 611.531.

 

"SM 4500-ClO₂ C (93)" means Method 4500-ClO₂ C, "Chlorine Dioxide", "Amperometric Method I", only the version in the 19^th and 20^th editions.  Referenced in Section 611.531.

 

"SM 4500-ClO₂ C (00)" means Method 4500-ClO₂ C, "Chlorine Dioxide", "Amperometric Method I", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.531.

 

"SM 4500-ClO₂ D (88)" means Method 4500-ClO₂ D, "Chlorine Dioxide", "DPD Method", only the version in the 18^th edition.  Referenced in Section 611.531.

 

"SM 4500-ClO₂ D (93)" means Method 4500-ClO₂ D, "Chlorine Dioxide", "DPD Method", only the version in the 19^th and 20^th editions.  Referenced in Sections 611.381 and 611.531.

 

"SM 4500-ClO₂ D (00)" means Method 4500-ClO₂ D, "Chlorine Dioxide", "DPD Method", only the version in the 21^st edition.  Referenced in Section 611.381.

 

"SM 4500-ClO₂ E (88)" means Method 4500-ClO₂ E, "Chlorine Dioxide", "Amperometric Method II (Proposed)", only the version in the 18^th edition.  Referenced in Section 611.531.

 

"SM 4500-ClO₂ E (93)" means Method 4500-ClO₂ E, "Chlorine Dioxide", "Amperometric Method II", only the version in the 19^th and 20^th editions.  Referenced in Sections 611.381 and 611.531.

 

"SM 4500-ClO₂ E (00)" means Method 4500-ClO₂ E, "Chlorine Dioxide", "Amperometric Method II", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Sections 611.381 and 611.531.

 

"SM 4500-CN^– C (90)" means Method 4500-CN^– C, "Cyanide", "Total Cyanide after Distillation", only the version in the 18^th and 19^th editions.  Referenced in Section 611.611.

 

"SM 4500-CN^– C (97)" means Method 4500-CN^– C, "Cyanide", "Total Cyanide after Distillation", only the version in the 20^th edition.  Referenced in Section 611.611.

 

"SM 4500-CN^– C (99)" means Method 4500-CN^– C, "Cyanide", "Total Cyanide after Distillation", only the version in the 21^st and 22^nd editions.  Referenced in Section 611.611.

 

"SM 4500-CN^– C (16)" means Method 4500-CN^– C, "Cyanide", "Total Cyanide after Distillation", only the version in the 23^rd edition.  Referenced in Section 611.611.

 

"SM 4500-CN^– E (90)" means Method 4500-CN^– E, "Cyanide", "Colorimetric Method", only the version in the 18^th and 19^th editions.  Referenced in Section 611.611.

 

"SM 4500-CN^– E (97)" means Method 4500-CN^– E, "Cyanide", "Colorimetric Method", only the version in the 20^th edition.  Referenced in Section 611.611.

 

"SM 4500-CN^– E (99)" means Method 4500-CN^– E, "Cyanide", "Colorimetric Method", only the version in the 21^st and 22^nd editions.  Referenced in Section 611.611.

 

"SM 4500-CN^– E (16)" means Method 4500-CN^– E, "Cyanide", "Colorimetric Method", only the version in the 23^rd edition.  Referenced in Section 611.611.

 

"SM 4500-CN^– F (90)" means Method 4500-CN^– F, "Cyanide", "Cyanide-Selective Electrode Method", only the version in the 18^th and 19^th editions.  Referenced in Section 611.611.

 

"SM 4500-CN^– F (97)" means Method 4500-CN^– F, "Cyanide", "Cyanide-Selective Electrode Method", only the version in the 20^th edition.  Referenced in Section 611.611.

 

"SM 4500-CN^– F (99)" means Method 4500-CN– F, "Cyanide", "Cyanide-Selective Electrode Method", only the version in the 21^st and 22^nd editions.  Referenced in Section 611.611.

 

"SM 4500-CN^– F (16)" means Method 4500-CN^– F, "Cyanide", "Cyanide-Ion Selective Electrode Method", only the version in the 23^rd edition.  Referenced in Section 611.611.

 

"SM 4500-CN^– G (90)" means Method 4500-CN^– G, "Cyanide", "Cyanides Amenable to Chlorination after Distillation", only the version in the 18^th and 19^th editions.  Referenced in Section 611.611.

 

"SM 4500-CN^– G (97)" means Method 4500-CN^– G, "Cyanide", "Cyanides Amenable to Chlorination after Distillation", only the version in the 20^th edition.  Referenced in Section 611.611.

 

"SM 4500-CN^– G (99)" means Method 4500-CN^– G, "Cyanide", "Cyanides Amenable to Chlorination after Distillation", only the version in the 21^st and 22^nd editions.  Referenced in Section 611.611.

 

"SM 4500-CN^– G (16)" means Method 4500-CN^– G, "Cyanide", "Cyanides Amenable to Chlorination after Distillation", only the version in the 23^rd edition.  Referenced in Section 611.611.

 

"SM 4500-F^– B (88)" means Method 4500-F^– B, "Fluoride", "Preliminary Distillation Step", only the version in the 18^th edition.  Referenced in Section 611.611.

 

"SM 4500-F^– B (94)" means Method 4500-F^– B, "Fluoride", "Preliminary Distillation Step", only the version in the 19^th edition.  Referenced in Section 611.611.

 

"SM 4500-F^– B (97)" means Method 4500-F^– B, "Fluoride", "Preliminary Distillation Step", only the version in the 20^th, 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.611.

 

"SM 4500-F^– C (88)" means Method 4500-F^– C, "Fluoride", "Ion-Selective Electrode Method", only the version in the 18^th edition.  Referenced in Section 611.611.

 

"SM 4500-F^– C (94)" means Method 4500-F^– C, "Fluoride", "Ion-Selective Electrode Method", only the version in the 19^th edition.  Referenced in Section 611.611.

 

"SM 4500-F^– C (97)" means Method 4500-F^– C, "Fluoride", "Ion-Selective Electrode Method", only the version in the 20^th, 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.611.

 

"SM 4500-F^– D (88)" means Method 4500-F^– D, "Fluoride", "SPADNS Method", only the version in the 18^th edition.  Referenced in Section 611.611.

 

"SM 4500-F^– D (94)" means Method 4500-F^– D, "Fluoride", "SPADNS Method", only the version in the 19^th edition.  Referenced in Section 611.611.

 

"SM 4500-F^– D (97)" means Method 4500-F^– D, "Fluoride", "SPADNS Method", only the version in the 20^th, 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.611.

 

"SM 4500-F^– E (88)" means Method 4500-F^– E, "Fluoride", "Complexone Method", only the version in the 18^th edition.  Referenced in Section 611.611.

 

"SM 4500-F^– E (94)" means Method 4500-F^– E, "Fluoride", "Complexone Method", only the version in the 19^th edition.  Referenced in Section 611.611.

 

"SM 4500-F^– E (97)" means Method 4500-F^– E, "Fluoride", "Complexone Method", only the version in the 20^th, 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.611.

 

"SM 4500-H⁺ B (90)" means Method 4500-H⁺ B, "pH Value", "Electrometric Method", only the version in the 18^th and 19^th editions.  Referenced in Section 611.611.

 

"SM 4500-H⁺ B (96)" means Method 4500-H⁺ B, "pH Value", "Electrometric Method", only the version in the 20^th edition.  Referenced in Section 611.611.

 

"SM 4500-H⁺ B (00)" means Method 4500-H⁺ B, "pH Value", "Electrometric Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.611.

 

"SM 4500-NO₃^– D (88)" means Method 4500-NO₃^– D, "Nitrogen (Nitrate)", "Nitrate Electrode Method", only the version in the 18th edition.  Referenced in Section 611.611.

 

"SM 4500-NO₃^– D (93)" means Method 4500-NO₃^– D, "Nitrogen (Nitrate)", "Nitrate Electrode Method", only the version in the 19^th edition.  Referenced in Section 611.611.

 

"SM 4500-NO₃^– D (97)" means Method 4500-NO₃^– D, "Nitrogen (Nitrate)", "Nitrate Electrode Method", only the version in the 20^th edition.  Referenced in Section 611.611.

 

"SM 4500-NO₃^– D (00)" means Method 4500-NO₃^– D, "Nitrogen (Nitrate)", "Nitrate Electrode Method", only the version in the 21^st and 22^nd editions.  Referenced in Section 611.611.

 

"SM 4500-NO₃^– D (16)" means Method 4500-NO₃^– D, "Nitrogen (Nitrate)", "Nitrate Electrode Method", only the version in the 23^rd edition.  Referenced in Section 611.611.

 

"SM 4500-NO₃^– E (88)" means Method 4500-NO₃^– E, "Nitrogen (Nitrate)", "Cadmium Reduction Method", only the version in the 18^th edition.  Referenced in Section 611.611.

 

"SM 4500-NO₃^– E (93)" means Method 4500-NO₃^– E, "Nitrogen (Nitrate)", "Cadmium Reduction Method", only the version in the 19^th edition.  Referenced in Section 611.611.

 

"SM 4500-NO₃^– E (97)" means Method 4500-NO₃^– E, "Nitrogen (Nitrate)", "Cadmium Reduction Method", only the version in the 20^th edition.  Referenced in Section 611.611.

 

"SM 4500-NO₃^– E (00)" means Method 4500-NO₃^– E, "Nitrogen (Nitrate)", "Cadmium Reduction Method", only the version in the 21^st and 22^nd editions.  Referenced in Section 611.611.

 

"SM 4500-NO₃^– E (16)" means Method 4500-NO₃^– E, "Nitrogen (Nitrate)", "Cadmium Reduction Method", only the version in the 23^rd edition.  Referenced in Section 611.611.

 

"SM 4500-NO₃^– F (88)" means Method 4500-NO₃^– F, "Nitrogen (Nitrate)", "Automated Cadmium Reduction Method", only the version in the 18^th edition.  Referenced in Section 611.611.

 

"SM 4500-NO₃^– F (93)" means Method 4500-NO₃^– F, "Nitrogen (Nitrate)", "Automated Cadmium Reduction Method", only the version in the 19^th edition.  Referenced in Section 611.611.

 

"SM 4500-NO₃^– F (97)" means Method 4500-NO₃^– F, "Nitrogen (Nitrate)", "Automated Cadmium Reduction Method", only the version in the 20^th edition.  Referenced in Section 611.611.

 

"SM 4500-NO₃^– F (00)" means Method 4500-NO₃^– F, "Nitrogen (Nitrate)", "Automated Cadmium Reduction Method", only the version in the 21^st and 22^nd editions.  Referenced in Section 611.611.

 

"SM 4500-NO₃^– F (16)" means Method 4500-NO₃^– F, "Nitrogen (Nitrate)", "Automated Cadmium Reduction Method", only the version in the 23^rd edition.  Referenced in Section 611.611.

 

"SM 4500-NO₂^– B (88)" means Method 4500-NO₂^– B, "Nitrogen (Nitrite)", "Colorimetric Method", only the version in the 18^th edition.  Referenced in Section 611.611.

 

"SM 4500-NO₂^– B (93)" means Method 4500-NO₂^– B, "Nitrogen (Nitrite)", "Colorimetric Method", only the version in the 19^th and 20^th editions.  Referenced in Section 611.611.

 

"SM 4500-NO₂^– B (00)" means Method 4500-NO₂^– B, "Nitrogen (Nitrite)", "Colorimetric Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.611.

 

"SM 4500-O₃ B (88)" means Method 4500-O₃ B, "Ozone (Residual) (Proposed)", "Indigo Colorimetric Method", only the version in the 18^th edition.  Referenced in Section 611.531.

 

"SM 4500-O₃ B (93)" means Method 4500-O₃ B, "Ozone (Residual)", "Indigo Colorimetric Method", only the version in the 19^th edition.  Referenced in Section 611.531.

 

"SM 4500-O3 B (97)" means Method 4500-O3 B, "Ozone (Residual)", "Indigo Colorimetric Method", only the version in the 20^th, 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.531.

 

"SM 4500-P E (88)" means Method 4500-P E, "Phosphorus", "Ascorbic Acid Method", only the version in the 18^th edition.  Referenced in Section 611.611.

 

"SM 4500-P E (93)" means Method 4500-P E, "Phosphorus", "Ascorbic Acid Method", only the version in the 19^th edition.  Referenced in Section 611.611.

 

"SM 4500-P E (97)" means Method 4500-P E, "Phosphorus", "Ascorbic Acid Method", only the version in the 20^th edition.  Referenced in Section 611.611.

 

"SM 4500-P E (99)" means Method 4500-P E, "Phosphorus", "Ascorbic Acid Method", only the version in the 21^st and 22^nd editions.  Referenced in Section 611.611.

 

"SM 4500-P E (05)" means Method 4500-P E, "Phosphorus", "Ascorbic Acid Method", only the version in the 23^rd edition.  Referenced in Section 611.611.

 

"SM 4500-P F (88)" means Method 4500-P F, "Phosphorus", "Automated Ascorbic Acid Reduction Method", only the version in the 18^th edition.  Referenced in Section 611.611.

 

"SM 4500-P F (93)" means Method 4500-P F, "Phosphorus", "Automated Ascorbic Acid Reduction Method", only the version in the 19^th edition.  Referenced in Section 611.611.

 

"SM 4500-P F (97)" means Method 4500-P F, "Phosphorus", "Automated Ascorbic Acid Reduction Method", only the version in the 20^th edition.  Referenced in Section 611.611.

 

"SM 4500-P F (99)" means Method 4500-P F, "Phosphorus", "Automated Ascorbic Acid Reduction Method", only the version in the 21^st and 22^nd editions.  Referenced in Section 611.611.

 

"SM 4500-P F (05)" means Method 4500-P F, "Phosphorus", "Automated Ascorbic Acid Reduction Method", only the version in the 23^rd edition.  Referenced in Section 611.611.

 

"SM 4500-Si D (88)" means Method 4500-Si D, "Silica", "Molybdosilicate Method", only the version in the 18^th edition.  Referenced in Section 611.611.

 

"SM 4500-Si D (93)" means Method 4500-Si D, "Silica", "Molybdosilicate Method", only the version in the 19^th edition.  Referenced in Section 611.611.

 

"SM 4500-Si E (88)" means Method 4500-Si E, "Silica", "Molybdosilicate Method", only the version in the 18^th edition.  Referenced in Section 611.611.

 

"SM 4500-Si E (93)" means Method 4500-Si E, "Silica", "Molybdosilicate Method", only the version in the 19^th edition.  Referenced in Section 611.611.

 

"SM 4500-Si F (88)" means Method 4500-Si F, "Silica", "Molybdosilicate Method", only the version in the 18^th edition.  Referenced in Section 611.611.

 

"SM 4500-Si F (93)" means Method 4500-Si F, "Silica", "Molybdosilicate Method", only the version in the 19^th edition.  Referenced in Section 611.611.

 

"SM 4500-SiO₂ C (97)" means Method 4500-SiO₂ C, "Silica", "Molybdosilicate Method", only the version in the 20^th, 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.611.

 

"SM 4500-SiO₂ D (97)" means Method 4500-SiO₂ D, "Silica", "Heteropoly Blue Method", only the version in the 20^th, 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.611.

 

"SM 4500-SiO₂ E (97)" means Method 4500-SiO₂ E, "Silica", "Automated Method for Molybdate-Reactive Silica", only the version in the 20^th, 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.611.

 

"SM 5310 B (92)" means Method 5310 B, "Total Organic Carbon (TOC)", "Combustion-Infrared Method", only the version in the supplement to the 19^th edition.  Referenced in Section 611.381.

 

"SM 5310 B (96)" means Method 5310 B, "Total Organic Carbon (TOC)", "High-Temperature Combustion Method", only the version in the 20^th edition.  Referenced in Section 611.381.

 

"SM 5310 B (00)" means Method 5310 B, "Total Organic Carbon (TOC)", "High-Temperature Combustion Method", only the version in the 21^st and 22^nd editions.  Referenced in Section 611.381.

 

"SM 5310 B (14)" means Method 5310 B, "Total Organic Carbon (TOC)", "High-Temperature Combustion Method", only the version in the 23^rd edition.  Referenced in Section 611.381.

 

"SM 5310 C (92)" means Method 5310 C, "Total Organic Carbon (TOC)", "Persulfate-Ultraviolet Oxidation Method", only the version in the supplement to the 19^th edition.  Referenced in Section 611.381.

 

"SM 5310 C (96)" means Method 5310 C, "Total Organic Carbon (TOC)", "Persulfate-Ultraviolet or Heated-Persulfate Oxidation Method", only the version in the 20^th edition.  Referenced in Section 611.381.

 

"SM 5310 C (00)" means Method 5310 C, "Total Organic Carbon (TOC)", "Persulfate-Ultraviolet or Heated-Persulfate Oxidation Method", only the version in the 21^st and 22^nd editions.  Referenced in Section 611.381.

 

"SM 5310 C (14)" means Method 5310 C, "Total Organic Carbon (TOC)", "Persulfate-Ultraviolet or Heated-Persulfate Oxidation Method", only the version in the 23^rd edition.  Referenced in Section 611.381.

 

"SM 5310 D (92)" means Method 5310 D, "Total Organic Carbon (TOC)", "Wet-Oxidation Method", only the version in the supplement to the 19^th edition.  Referenced in Section 611.381.

 

"SM 5310 D (96)" means Method 5310 D, "Total Organic Carbon (TOC)", "Wet-Oxidation Method", only the version in the 20^th edition.  Referenced in Section 611.381.

 

"SM 5310 D (00)" means Method 5310 D, "Total Organic Carbon (TOC)", "Wet-Oxidation Method", only the version in the 21^st and 22^nd editions.  Referenced in Section 611.381.

 

"SM 5910 B (94)" means Method 5910 B, "UV-Absorbing Organic Constituents", "Ultraviolet Absorption Method", only the version in the 19^th and 20^th editions.  Referenced in Section 611.381.

 

"SM 5910 B (00)" means Method 5910 B, "UV-Absorbing Organic Constituents", "Ultraviolet Absorption Method", only the version in the 21^st edition.  Referenced in Section 611.381.

 

"SM 5910 B (11)" means Method 5910 B, "UV-Absorbing Organic Constituents", "Ultraviolet Absorption Method", only the version in the 22^nd edition.  Referenced in Section 611.381.

 

"SM 5910 B (13)" means Method 5910 B, "UV-Absorbing Organic Constituents", "Ultraviolet Absorption Method", only the version in the 23^rd edition.  Referenced in Section 611.381.

 

"SM 6251 B (94)" means Method 6251 B, "Disinfection By-Products:  Haloacetic Acids and Trichlorophenol", "Micro Liquid-Liquid Extraction Gas Chromatographic Method", only the version in the 19^th, 20^th, and 21^st editions.  Referenced in Section 611.381.

 

"SM 6251 B (07)" means Method 6251 B, "Disinfection By-Products:  Haloacetic Acids and Trichlorophenol", "Micro Liquid-Liquid Extraction Gas Chromatographic Method", only the version in the 22^nd and 23^rd editions.  Referenced in Section 611.381.

 

"SM 6610 (92)" means Method 6610, "Carbamate Pesticides (Proposed)", only the version in the supplement to the 18^th edition and the 19^th edition.  Referenced in Section 611.645.

 

"SM 6610 (96)" means Method 6610, "Carbamate Pesticides", only the version in the 20^th edition.  Referenced in Section 611.645.

 

"SM 6610 B (99)" means Method 6610, "Carbamate Pesticides", "High-Performance Liquid Chromatographic Method", only the version in the 21^st edition.  Referenced in Section 611.645.

 

"SM 6610 B (04)" means Method 6610, "Carbamate Pesticides", "High-Performance Liquid Chromatographic Method", only the version in 22^nd and 23^rd editions.  Referenced in Section 611.645.

 

"SM 6640 B (01)" means Method 6640 B, "Acidic Herbicide Compounds", "Micro Liquid-Liquid Extraction Gas Chromatographic Method", only the version in 21^st edition.  Referenced in Section 611.645.

 

"SM 6640 B (06)" means Method 6640 B, "Acidic Herbicide Compounds", "Micro Liquid-Liquid Extraction Gas Chromatographic Method", only the version in 22^nd and 23^rd editions.  Referenced in Section 611.645.

 

"SM 6651 B (91)" means Method 6651 B, "Glyphosate Herbicide (Proposed)", "Liquid Chromatographic Post-Column Fluorescence Method", only the version in 18^th edition, or "Glyphosate Herbicide", "Liquid Chromatographic Post-Column Fluorescence Method", in 19^th edition.  Referenced in Section 611.645.

 

"SM 6651 B (96)" means Method 6651 B, "Glyphosate Herbicide", "Liquid Chromatographic Post-Column Fluorescence Method", only the version in 20^th edition.  Referenced in Section 611.645.

 

"SM 6651 B (00)" means Method 6651 B, "Glyphosate Herbicide", "Liquid Chromatographic Post-Column Fluorescence Method", only the version in 21^st edition.  Referenced in Section 611.645.

 

"SM 6651 B (05)" means Method 6651 B, "Glyphosate Herbicide", "Liquid Chromatographic Post-Column Fluorescence Method", only the version in 22^nd and 23^rd editions.  Referenced in Section 611.645.

 

"SM 7110 B (85)" means Method 7110 B, "Gross Alpha and Beta Radioactivity (Total, Suspended, and Dissolved)", "Counting Method", only the version in 17^th edition.  Referenced in Section 611.720.

 

"SM 7110 B (91)" means Method 7110 B, "Gross Alpha and Beta Radioactivity (Total, Suspended, and Dissolved)", "Evaporation Method for Gross Alpha-Beta", only the version in 18^th and 19^th editions.  Referenced in Section 611.720.

 

"SM 7110 B (96)" means Method 7110 B, "Gross Alpha and Beta Radioactivity (Total, Suspended, and Dissolved)", "Evaporation Method for Gross Alpha-Beta", only the version in 20^th edition.  Referenced in Section 611.720.

 

"SM 7110 B (00)" means Method 7110 B, "Gross Alpha and Beta Radioactivity (Total, Suspended, and Dissolved)", "Evaporation Method for Gross Alpha-Beta", only the version in 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.720.

 

"SM 7110 C (91)" means Method 7110 C, "Gross Alpha and Beta Radioactivity (Total, Suspended, and Dissolved)", "Coprecipitation Method for Gross Alpha Radioactivity in Drinking Water (Proposed)", only the version in 18^th and 19^th editions.  Referenced in Section 611.720.

 

"SM 7110 C (96)" means Method 7110 C, "Gross Alpha and Beta Radioactivity (Total, Suspended, and Dissolved)", "Coprecipitation Method for Gross Alpha Radioactivity in Drinking Water", only the version in 20^th edition.  Referenced in Section 611.720.

 

"SM 7110 C (00)" means Method 7110 C, "Gross Alpha and Beta Radioactivity (Total, Suspended, and Dissolved)", "Coprecipitation Method for Gross Alpha Radioactivity in Drinking Water", only the version in 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.720.

 

"SM 7110 D (17)" means Method 7110 D, "Gross Alpha and Beta Radioactivity (Total, Suspended, and Dissolved)", "Liquid Scintillation Spectroscopic Method for Gross Alpha-Beta Radioactivity in Drinking Water", only the version from Standard Methods Online as Method 7110 D-17.  Referenced in Section 611.720.

 

"SM 7120 (94)" means Method 7120, "Gamma-Emitting Radionuclides", only the version in the 19^th edition.  Referenced in Section 611.720.

 

"SM 7120 (97)" means Method 7120, "Gamma-Emitting Radionuclides", only the version in the 20^th, 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.720.

 

"SM 7500-Cs B (88)" means Method 7500-Cs B, "Radioactive Cesium", "Precipitation Method", only the version in the 17^th and 18^th editions.  Referenced in Section 611.720.

 

"SM 7500-Cs B (93)" means Method 7500-Cs B, "Radioactive Cesium", "Precipitation Method", only the version in the 19^th and 20^th editions.  Referenced in Section 611.720.

 

"SM 7500-Cs B (00)" means Method 7500-Cs B, "Radioactive Cesium", "Precipitation Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.720.

 

"SM 7500-I B (88)" means Method 7500-I B, "Radioactive Iodine", "Precipitation Method", only the version in the 17^th and 18^th editions.  Referenced in Section 611.720.

 

"SM 7500-I B (93)" means Method 7500-I B, "Radioactive Iodine", "Precipitation Method", only the version in the 19^th and 20^th editions.  Referenced in Section 611.720.

 

"SM 7500-I B (00)" means Method 7500-I B, "Radioactive Iodine", "Precipitation Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.720.

 

"SM 7500-I C (88)" means Method 7500-I C, "Radioactive Iodine", "Ion-Exchange Method", only the version in the 17^th and 18^th editions.  Referenced in Section 611.720.

 

"SM 7500-I C (93)" means Method 7500-I C, "Radioactive Iodine", "Ion-Exchange Method", only the version in the 19^th and 20^th editions.  Referenced in Section 611.720.

 

"SM 7500-I C (00)" means Method 7500-I C, "Radioactive Iodine", "Ion-Exchange Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.720.

 

"SM 7500-I D (88)" means Method 7500-I D, "Radioactive Iodine", "Distillation Method", only the version in the 17^th and 18^th editions.  Referenced in Section 611.720.

 

"SM 7500-I D (93)" means Method 7500-I D, "Radioactive Iodine", "Distillation Method", only the version in the 19^th and 20^th editions.  Referenced in Section 611.720.

 

"SM 7500-I D (00)" means Method 7500-I D, "Radioactive Iodine", "Distillation Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.720.

 

"SM 7500-Ra B (88)" means Method 7500-Ra B, "Radium", "Precipitation Method", only the version in the 17^th and 18^th editions.  Referenced in Section 611.720.

 

"SM 7500-Ra B (93)" means Method 7500-Ra B, "Radium", "Precipitation Method", only the version in the 19^th and 20^th editions.  Referenced in Section 611.720.

 

"SM 7500-Ra B (01)" means Method 7500-Ra B, "Radium", "Precipitation Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.720.

 

"SM 7500-Ra C (88)" means Method 7500-Ra C, "Radium", "Emanation Method", only the version in the 17^th and 18^th editions.  Referenced in Section 611.720.

 

"SM 7500-Ra C (93)" means Method 7500-Ra C, "Radium", "Emanation Method", only the version in the 19^th and 20^th editions.  Referenced in Section 611.720.

 

"SM 7500-Ra C (01)" means Method 7500-Ra C, "Radium", "Emanation Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.720.

 

"SM 7500-Ra D (88)" means Method 7500-Ra D, "Radium", "Sequential Precipitation Method", only the version in the 17^th and 18^th editions.  Referenced in Section 611.720.

 

"SM 7500-Ra D (93)" means Method 7500-Ra D, "Radium", "Sequential Precipitation Method", only the version in the 19^th and 20^th editions.  Referenced in Section 611.720.

 

"SM 7500-Ra D (01)" means Method 7500-Ra D, "Radium", "Sequential Precipitation Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.720.

 

"SM 7500-Ra E (01)" means Method 7500-Ra E, "Radium", "Gamma Spectrometry Method", only the version in the 22^nd edition.  Referenced in Section 611.720.

 

"SM 7500-Ra E (07)" means Method 7500-Ra E, "Radium", "Gamma Spectrometry Method", only the version in the 23^rd edition.  Referenced in Section 611.720.

 

"SM 7500-Sr B (88)" means Method 7500-Sr B, "Total Radioactive Strontium and Strontium 90", "Precipitation Method", only the version in the 17^th and 18^th editions.  Referenced in Section 611.720.

 

"SM 7500-Sr B (93)" means Method 7500-Sr B, "Total Radioactive Strontium and Strontium 90", "Precipitation Method", only the version in the 19^th and 20^th editions.  Referenced in Section 611.720.

 

"SM 7500-Sr B (01)" means Method 7500-Sr B, "Total Radioactive Strontium and Strontium 90", "Precipitation Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.720.

 

"SM 7500-³H B (88)" means Method 7500-³H B, "Tritium", "Liquid Scintillation Spectrometric Method", only the version in the 17^th and 18^th editions.  Referenced in Section 611.720.

 

"SM 7500-³H B (93)" means Method 7500-³H B, "Tritium", "Liquid Scintillation Spectrometric Method", only the version in the 19^th and 20^th editions.  Referenced in Section 611.720.

 

"SM 7500-³H B (00)" means Method 7500-³H B, "Tritium", "Liquid Scintillation Spectrometric Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.720.

 

"SM 7500-U B (88)" means Method 7500-U B, "Uranium", "Radiochemical Method (Proposed)", only the version in the 17^th edition.  Referenced in Section 611.720.

 

"SM 7500-U B (91)" means only Method 7500-U B, "Uranium", "Radiochemical Method (Proposed)", the version in the 18^th edition, and "Uranium", "Radiochemical Method", the version in the 19^th edition.  Referenced in Section 611.720.

 

"SM 7500-U B (96)" means Method 7500-U B, "Uranium", "Radiochemical Method", only the version in the 20^th edition.  Referenced in Section 611.720.

 

"SM 7500-U B (00)" means Method 7500-U B, "Uranium", "Radiochemical Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.720.

 

"SM 7500-U C (88)" means Method 7500-U C, "Uranium", "Fluorometric Method (Proposed)", only the version in the 17^th edition.  Referenced in Section 611.720.

 

"SM 7500-U C (91)" means Method 7500-U C, "Uranium", "Isotopic Method (Proposed)", only the version in the 18^th and 19^th editions.  Referenced in Section 611.720.

 

"SM 7500-U C (96)" means Method 7500-U C, "Uranium", "Isotopic Method", only the version in the 20^th edition.  Referenced in Section 611.720.

 

"SM 7500-U C (00)" means Method 7500-U C, "Uranium", "Isotopic Method", only the version in the 21^st, 22^nd, and 23^rd editions.  Referenced in Section 611.720.

 

"SM 9060 A (97)" means Method 9060 A, "Samples", "Collection", only the version in the 20^th and 21^st editions.  Referenced in Section 611.1052.

 

"SM 9215 B (88)" means Method 9215 B, "Heterotrophic Plate Count", "Pour Plate Method", only the version in the 18^th edition.  Referenced in Section 611.531.

 

"SM 9215 B (94)" means Method 9215 B, "Heterotrophic Plate Count", "Pour Plate Method", only the version in the 19^th and 20^th editions.  Referenced in Section 611.531.

 

"SM 9215 B (00)" means Method 9215 B, "Heterotrophic Plate Count", "Pour Plate Method", only the version in the 21^st edition.  Referenced in Section 611.531.

 

"SM 9215 B (04)" means Method 9215 B, "Heterotrophic Plate Count", "Pour Plate Method", only the version in the 22^nd edition.  Referenced in Section 611.531.

 

"SM 9215 B (16)" means Method 9215 B, "Heterotrophic Plate Count", "Pour Plate Method", only the version in the 23^rd edition.  Referenced in Section 611.531.

 

"SM 9221 A (93)" means Method 9221 A, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Introduction", only the version in the 18^th edition.  Referenced in Section 611.531.

 

"SM 9221 A (94)" means Method 9221 A, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Introduction", only the version in the 19^th and 20^th editions.  Referenced in Section 611.531.

 

"SM 9221 A (99)" means Method 9221 A, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Introduction", only the version in the 21^st edition.  Referenced in Section 611.531.

 

"SM 9221 A (06)" means Method 9221 A, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Introduction", only the version in the 22^nd edition.  Referenced in Section 611.531.

 

"SM 9221 A (14)" means Method 9221 A, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Introduction", only the version in the 23^rd edition.  Referenced in Section 611.531.

 

"SM 9221 B (93)" means Method 9221 B, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Standard Total Coliform Fermentation Technique", only the version in the 18^th edition.  Referenced in Section 611.531.

 

"SM 9221 B (94)" means Method 9221 B, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Standard Total Coliform Fermentation Technique", only the version in the 19^th and 20^th editions.  Referenced in Sections 611.531 and 611.1052.

 

"SM 9221 B (99)" means Method 9221 B, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Standard Total Coliform Fermentation Technique", only the version in the 21^st edition.  Referenced in Sections 611.531 and 611.1052.

 

"SM 9221 B (06)" means Method 9221 B, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Standard Total Coliform Fermentation Technique", only the version in the 22^nd edition.  Referenced in Sections 611.531 and 611.1052.

 

"SM 9221 B (14)" means Method 9221 B, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Standard Total Coliform Fermentation Technique", only the version in the 23^rd edition.  Referenced in Sections 611.531 and 611.1052.

 

"SM 9221 C (93)" means Method 9221 C, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Estimation of Bacterial Density", only the version in the 18^th edition.  Referenced in Section 611.531.

 

"SM 9221 C (94)" means Method 9221 C, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Estimation of Bacterial Density", only the version in the 19^th and 20^th editions.  Referenced in Section 611.531.

 

"SM 9221 C (99)" means Method 9221 C, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Estimation of Bacterial Density", only the version in the 21^st edition.  Referenced in Section 611.531.

 

"SM 9221 C (06)" means Method 9221 C, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Estimation of Bacterial Density", only the version in the 22^nd edition.  Referenced in Section 611.531.

 

"SM 9221 C (14)" means Method 9221 C, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Estimation of Bacterial Density", only the version in the 23^rd edition.  Referenced in Section 611.531.

 

"SM 9221 D (94)" means Method 9221 D, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Presence-Absence (P-A) Coliform", only the version in the 20^th edition.  Referenced in Section 611.1052.

 

"SM 9221 D (99)" means Method 9221 D, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Presence-Absence (P-A) Coliform", only the version in the 21^st edition.  Referenced in Section 611.1052.

 

"SM 9221 D (14)" means Method 9221 D, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Presence-Absence (P-A) Coliform", only the version in the 23^rd edition.  Referenced in Section 611.1052.

 

"SM 9221 E (93)" means Method 9221 E, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Fecal Coliform Procedure", only the version in the 18^th edition.  Referenced in Section 611.531.

 

"SM 9221 E (94)" means Method 9221 E, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Fecal Coliform Procedure", only the version in the 19^th and 20^th editions.  Referenced in Section 611.531.

 

"SM 9221 E (99)" means Method 9221 E, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Fecal Coliform Procedure", only the version in the 21^st edition.  Referenced in Section 611.531.

 

"SM 9221 E (06)" means Method 9221 E, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Fecal Coliform Procedure", only the version in the 22^nd edition.  Referenced in Section 611.531.

 

"SM 9221 E (14)" means Method 9221 E, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Thermotolerant (Fecal) Coliform Procedure", only the version in the 23^rd edition.  Referenced in Section 611.531.

 

"SM 9221 F (94)" means Method 9221 F, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Escherichia Coli Procedure (Proposed)", only the version in the 20^th edition.  Referenced in Sections 611.802 and 611.1052.

 

"SM 9221 F (06)" means Method 9221 F, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Escherichia Coli Procedure Using Fluorogenic Substrate", only the version in the 22^nd edition.  Referenced in Sections 611.802 and 611.1052.

 

"SM 9221 F (14)" means Method 9221 F, "Multiple-Tube Fermentation Technique for Members of the Coliform Group", "Escherichia Coli Procedure Using Fluorogenic Substrate", only the version in the 23^rd edition.  Referenced in Sections 611.802 and 611.1052.

 

"SM 9222 A (91)" means Method 9222 A, "Membrane Filter Technique for Members of the Coliform Group", "Introduction", only the version in the 18^th edition.  Referenced in Section 611.531.

 

"SM 9222 A (94)" means Method 9222 A, "Membrane Filter Technique for Members of the Coliform Group", "Introduction", only the version in the 19^th edition.  Referenced in Section 611.531.

 

"SM 9222 A (97)" means Method 9222 A, "Membrane Filter Technique for Members of the Coliform Group", "Introduction", only the version in the 20^th and 21^st editions.  Referenced in Section 611.531.

 

"SM 9222 A (06)" means Method 9222 A, "Membrane Filter Technique for Members of the Coliform Group", "Introduction", only the version in the 22^nd edition.  Referenced in Section 611.531.

 

"SM 9222 A (15)" means Method 9222 A, "Membrane Filter Technique for Members of the Coliform Group", "Introduction", only the version in the 23^rd edition.  Referenced in Section 611.531.

 

"SM 9222 B (91)" means Method 9222 B, "Membrane Filter Technique for Members of the Coliform Group", "Standard Total Coliform Membrane Filter Procedure", only the version in the 18^th edition.  Referenced in Section 611.531.

 

"SM 9222 B (94)" means Method 9222 B, "Membrane Filter Technique for Members of the Coliform Group", "Standard Total Coliform Membrane Filter Procedure", only the version in the 19^th edition.  Referenced in Section 611.531.

 

"SM 9222 B (97)" means Method 9222 B, "Membrane Filter Technique for Members of the Coliform Group", "Standard Total Coliform Membrane Filter Procedure", only the version in the 20^th and 21^st editions.  Referenced in Sections 611.531 and 611.1052.

 

"SM 9222 B (15)" means Method 9222 B, "Membrane Filter Technique for Members of the Coliform Group", "Standard Total Coliform Membrane Filter Procedure using Endo Media", only the version in the 23^rd edition.  Referenced in Sections 611.531 and 611.1052.

 

"SM 9222 C (91)" means Method 9222 C, "Membrane Filter Technique for Members of the Coliform Group", "Delayed-Incubation Total Coliform Procedure", only the version in the 18^th edition.  Referenced in Section 611.531.

 

"SM 9222 C (94)" means Method 9222 C, "Membrane Filter Technique for Members of the Coliform Group", "Delayed-Incubation Total Coliform Procedure", only the version in the 19^th edition.  Referenced in Section 611.531.

 

"SM 9222 C (97)" means Method 9222 C, "Membrane Filter Technique for Members of the Coliform Group", "Delayed-Incubation Total Coliform Procedure", only the version in the 20^th and 21^st editions.  Referenced in Sections 611.531 and 611.1052.

 

"SM 9222 C (15)" means Method 9222 C, "Membrane Filter Technique for Members of the Coliform Group", "Delayed-Incubation Total Coliform Procedure", only the version in the 23^rd edition.  Referenced in Sections 611.531 and 611.1052.

 

"SM 9222 D (91)" means Method 9222 D, "Membrane Filter Technique for Members of the Coliform Group", "Fecal Coliform Membrane Filter Procedure", only the version in the 18^th edition.  Referenced in Section 611.531.

 

"SM 9222 D (94)" means Method 9222 D, "Membrane Filter Technique for Members of the Coliform Group", "Fecal Coliform Membrane Filter Procedure", only the version in the 19^th edition.  Referenced in Section 611.531.

 

"SM 9222 D (97)" means Method 9222 D, "Membrane Filter Technique for Members of the Coliform Group", "Fecal Coliform Membrane Filter Procedure", only the version in the 20^th and 21^st editions.  Referenced in Sections 611.531 and 611.1004.

 

"SM 9222 D (06)" means Method 9222 D, "Membrane Filter Technique for Members of the Coliform Group", "Thermotolerant (Fecal) Coliform Membrane Filter Procedure", only the version in the 22^nd edition.  Referenced in Section 611.531.

 

"SM 9222 D (15)" means Method 9222 D, "Membrane Filter Technique for Members of the Coliform Group", "Thermotolerant (Fecal) Coliform Membrane Filter Procedure", only the version in the 23^rd edition.  Referenced in Section 611.531.

 

"SM 9222 G (97)" means Method 9222 G, "Membrane Filter Technique for Members of the Coliform Group", "MF Partition Procedure", only the version in the 20^th and 21^st editions.  Referenced in Sections 611.802, 611.1004, and 611.1052.

 

"SM 9222 H (15)" means Method 9222 H, "Membrane Filter Technique for Members of the Coliform Group", "Partitioning E. coli from MF Total Coliform and E. coli using EC-MUG Broth", only the version in the 23^rd edition.  Referenced in Section 611.1052.

 

"SM 9222 I (15)" means Method 9222 I, "Membrane Filter Technique for Members of the Coliform Group", "Partitioning E. coli from MF Total Coliform and E. coli using NA-MUG Agar", only the version in the 23^rd edition.  Referenced in Sections 611.802 and 611.1052.

 

"SM 9222 J (15)" means Method 9222 J, "Membrane Filter Technique for Members of the Coliform Group", "Simultaneous Detection of Total Coliform and E. coli by Dual-Chromogen Membrane Filter Procedure", only the version in the 23^rd edition.  Referenced in Sections 611.802 and 611.1052.

 

"SM 9223 (92)" means Method 9223, "Chromogenic Substrate Coliform Test (Proposed)" (also referred to as the variations "Colilert^®" and "Colisure^™" depending on the medium used), only the version in the 18^th edition.  Referenced in Section 611.531.

 

"SM 9223 (94)" means Method 9223, "Chromogenic Substrate Coliform" (also referred to as the variations "Colilert^®" and "Colisure^™" depending on the medium used), only the version in the 19^th edition.  Referenced in Section 611.531.

 

"SM 9223 (97)" means Method 9223, "Enzyme Substrate Coliform" (also referred to as the variations "Colilert^®" and "Colisure^™" depending on the medium used), only the version in the 20^th and 21^st editions.  Referenced in Sections 611.531.

 

"SM 9223 B (92)" means Method 9223 B, "Chromogenic Substrate Coliform Test (Proposed)", "Chromogenic Substrate" (also referred to as the variations "Colilert^®", "Colisure^™", and "Colilert-18^®" depending on the medium used), only the version in the 18^th edition.  Referenced in Section 611.1004.

 

"SM 9223 B (94)" means Method 9223 B, "Chromogenic Substrate Coliform", "Chromogenic Substrate" (also referred to as the variations "Colilert^®" and "Colisure^™" depending on the medium used), only the version in the 19^th edition.  Referenced in Section 611.1004.

 

"SM 9223 B (97)" means Method 9223 B, "Enzyme Substrate Coliform", "Chromogenic Substrate" (also referred to as the variations "Colilert^®" and "Colisure^™" depending on the medium used), only the version in the 20^th and 21^st editions.  Referenced in Sections 611.802 and 611.1004.

 

"SM 9223 B (04)" means Method 9223 B, "Enzyme Substrate Coliform", "Enzyme Substrate" (also referred to as the variations "Colilert^®" and "Colisure^™" depending on the medium used), only the version in the 22^nd edition.  Referenced in Sections 611.531, 611.802, and 611.1004.

 

"SM 9223 B (16)" means Method 9223 B, "Enzyme Substrate Coliform", "Enzyme Substrate" (also referred to as the variations "Colilert^®" and "Colisure^™" depending on the medium used), only the version in the 23^rd edition.  Referenced in Sections 611.531, 611.802, and 611.1052.

 

"SM 9230 B (93)" means Method 9230 B, "Fecal Streptococcus and Enterococcus Groups", "Multiple-Tube Techniques", only the version in the 20^th and 21^st editions.  Referenced in Section 611.802.

 

"SM 9230 B (04)" means Method 9230 B, "Fecal Streptococcus and Enterococcus Groups", "Multiple-Tube Techniques", only the version from Standard Methods Online as Method 9230 B-04.  Referenced in Section 611.802.

 

"SM 9230 C (93)" means Method 9230 C, "Fecal Streptococcus and Enterococcus Groups", "Membrane Filter Techniques", only the version in the 20^th edition.  Referenced in Section 611.802.

 

"SM 9230 C (13)" means Method 9230 C, "Fecal Enterococcus/Streptococcus Groups", "Membrane Filter Techniques", only the version in the 23^rd edition.  Referenced in Section 611.802.

 

"SM 9230 D (13)" means Method 9230 D, "Fecal Enterococcus/Streptococcus Groups", "Fluorogenic Substrate Enterococcus", only the version in the 23^rd edition.  Referenced in Section 611.802.

 

BOARD NOTE:  The publication dates of the several "Standard Methods for the Examination of Water and Wastewater" editions containing approved methods:

 

13^th edition, 1971

17^th edition, 1989

18^th edition, 1992

Supplement to 18^th edition, 1994

19^th edition, 1995

Supplement to 19^th edition, 1996

20^th edition, 1998

21^st edition, 2005

22^nd edition, 2012

23^rd edition, 2017

 

"Syngenta AG-625 (01)" means "Method AG-625:  Atrazine in Drinking Water by Immunoassay" (February 2001), Syngenta Crop Protection, Inc.  Available from publisher, 410 Swing Road, Post Office Box 18300, Greensboro, NC  27419 (336-632–6000).  Referenced in Section 611.645.

 

"Systea Easy (1-Reagent) (09)" means "Nitrate by Discrete Analysis:  Systea Easy (1-Reagent) Nitrate Method (Colorimetric, Automated, 1 Reagent)" (February 4, 2009).  Available from Systea Scientific LLC, 900 Jorie Blvd., Suite 35, Oak Brook, IL  60523 (630-645-0600); NEMI; and USEPA, OGWDW (under "Inorganic Contaminants and Other Inorganic Constituents (PDF)").  Referenced in Section 611.611.

 

Technicon Methods.  Available from Bran + Luebbe, 1025 Busch Parkway, Buffalo Grove, IL 60089.

 

"Technicon #129-71W (72)" means "Fluoride in Water and Wastewater" (December 1972), Industrial Method #129-71W.  Referenced in Section 611.611.  See 40 CFR 141.23(k)(1), footnote 11.

 

"Technicon #380-75WE (76)" means "Fluoride in Water and Wastewater" (February 1976), #380-75WE.  See 40 CFR 141.23(k)(1), footnote 11, referenced in Section 611.611.

 

Tecta Methods.  Available from IDEXX Laboratories, Inc., One IDEXX Drive, Westbrook, Maine  04092 (800-548-6733; https://www.idexx.com/en/water/other-products-services/tecta-water-microbiology-system/ and USEPA, OGWDW (under "Ground Water Rule (PDF)" and "Revised Total Coliforms Rules (PDF)").

 

"Tecta (14)" means "TECTA^™ EC/TC medium and the TECTA^™ Instrument:  a Presence/Absence Method for Simultaneous Detection of Total Coliforms and Escherichia coli (E.coli) in Drinking Water", Version 1.0 (May 22, 2014).  Referenced in Sections 611.802 and 611.1052.

 

"Tecta (17)" means "TECTA^™ EC/TC medium and the TECTA^™ Instrument:  a Presence/Absence Method for Simultaneous Detection of Total Coliforms and Escherichia coli (E.coli) in Drinking Water", Version 2.0 (March 20, 2017).  Referenced in Sections 611.802 and 611.1052.

 

"Thermo-Fisher 557.1 (17)" means "Thermofisher Method 557.1:  Determination of Haloacetic Acids in Drinking Water using Two-Dimensional Ion Chromatography with Suppressed Conductivity Detection", Version 1.0 (January 2017).  Available from Thermo-Fisher Scientific, 490 Lakeside Dr, Sunnyvale, CA  94085 (800-556-2323; www.thermofisher.com) and USEPA, OGWDW (under "Disinfection Byproduct Rules (PDF)").  Referenced in Section 611.611.

 

"Thermo-Fisher Discrete Analyzer (16)" means "Application Note:  Drinking Water Orthophosphate Method for Thermo Scientific Gallery Discrete Analyzer", Revision 5 (February 18, 2016).  Available from Thermo-Fisher Scientific, Ratastie 2, 01620 Vantaa, Finland and USEPA, OGWDW (under "Inorganic Contaminants and Other Inorganic Constituents (PDF)").  Referenced in Section 611.611.

 

USEPA Methods

 

Numbered Methods

 

"USEPA H-02 (84)" means Method H-02, "Radiochemical Determination of Tritium in Water − Dioxane Method", in USEPA Radiochemistry Procedures (84).  Referenced in Section 611.720.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Radionuclides (PDF)").

 

"USEPA Ra-03 (84)" means Method Ra-03, "Radiochemical Determination of Radium-226 in Water Samples", in USEPA Radiochemistry Procedures (84).  Referenced in Section 611.720.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Radionuclides (PDF)").

 

"USEPA Ra-04 (84)" means Method Ra-04, "Radiochemical Determination of Radium-226 − De-emanation Procedure", in USEPA Radiochemistry Procedures (84).  Referenced in Section 611.720.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Radionuclides (PDF)").

 

"USEPA Ra-05 (84)" means Method Ra-05, "Radiochemical Determination of Radium-228 in Water Samples", in USEPA Radiochemistry Procedures (84).  Referenced in Section 611.720.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Radionuclides (PDF)").

 

"USEPA Sr-04 (84)" means Method Sr-04, "Radiochemical Determination of Radiostrontium in Water, Sea Water and Other Aqueous Media", in USEPA Radiochemistry Procedures (84).  Referenced in Section 611.720.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Radionuclides (PDF)").

 

"USEPA 00-01 (84)" means Method 00-01, "Radiochemical Determination of Gross Alpha and Gross Beta Activity in Water", in USEPA Radiochemistry Procedures (84).  Referenced in Section 611.720.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Radionuclides (PDF)").

 

"USEPA 00-02 (84)" means Method 00-02, "Radiochemical Determination of Gross Alpha Activity in Drinking Water by Coprecipitation", in USEPA Radiochemistry Procedures (84).  Referenced in Section 611.720.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Radionuclides (PDF)").

 

"USEPA 00-07 (84)" means Method 00-07, "Radiochemical Determination of Thorium and Uranium in Water", in USEPA Radiochemistry Procedures (84).  Referenced in Section 611.720.

BOARD NOTE:  Also available from USEPA, OGWDW (under "Radionuclides (PDF)").

 

"USEPA 100.1 (83)" means "Method 100.1:  Analytical Method for Determination of Asbestos in Water" (September 1983), USEPA, Environmental Research Laboratory, document number EPA 600/4-83-043.  Available from NEMI; NTRL (document number PB83-260471) and USEPA, NSCEP (search for "600483043").  Referenced in Section 611.611.

 

"USEPA 100.2 (94)" means "Method 100.2:  Determination of Asbestos Structures over 10-mm in Length in Drinking Water" (June 1994), USEPA, Environmental Monitoring Systems Laboratory, document number EPA 600/R-94-134.  Available from NEMI; NTRL (document number PB94-201902); USEPA, NSCEP (search for "600R94134"); and USEPA, OGWDW (under "Inorganic Contaminants and Other Inorganic Constituents (PDF)").  Referenced in Section 611.611.

 

"USEPA 127 (21)" means "Method 127:  Determination of Monochloramine Concentration in Drinking Water", document number EPA 815-B-21-004, (January 2021).  Available from USEPA, NSCEP (search for "815B21004").  Referenced in Section 611.531.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 150.1 (71)" means "pH:  Method 150.1 (Electrometric)" (1971), in USEPA Inorganic Methods (83).  Referenced in Section 611.611.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 150.2 (82)" means "pH, Continuous Monitoring (Electrometric) − Method 150.2" (December 1982), in USEPA Inorganic Methods (83).  Referenced in Section 611.611.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 150.3 (17)" means "Method 150.3:  Determination of pH in Drinking Water", Version 1.0 (February 2017), USEPA, Office of Ground Water and Drinking Water, document number EPA 815/B-17/001.  Available from USEPA, NSCEP (search for "815B17001") and USEPA, OGWDW (under "Disinfection Byproduct Rules (PDF)" and "Inorganic Contaminants and Other Inorganic Constituents (PDF)").  Referenced in Section 611.611.

 

"USEPA 180.1 (93)" means "Method 180.1:  Determination of Turbidity by Nephelometry", Revision 2.0 (August 1993), in USEPA Environmental Inorganic Methods (93).  Referenced in Section 611.531.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 200.5 (03)" means "Method 200.5:  Determination of Trace Elements in Drinking Water by Axially Viewed Inductively Coupled Plasma-Atomic Emission Spectrometry", Revision 4.2 (October 2003), USEPA, National Exposure Research Laboratory, document number EPA 600/R-06/115.  Available from NEMI; USEPA, NSCEP (search for "600R06115"); and USEPA, OGWDW (under "Disinfection Byproduct Rules (PDF)," "Inorganic Contaminants and Other Inorganic Constituents (PDF)," and "Secondary Contaminants (PDF)").  Referenced in Sections 611.611 and 611.612.

 

"USEPA 200.7 (94)" means "Method 200.7:  Determination of Metals and Trace Elements in Water and Wastes by Inductively Coupled Plasma-Atomic Emission Spectrometry", Revision 4.4 (May 1994), in USEPA Environmental Metals Methods (94).  Referenced in Sections 611.600, 611.611, and 611.612.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 200.8 (94)" means "Method 200.8:  Determination of Trace Elements in Water and Wastes by Inductively Coupled Plasma-Atomic Emission Spectrometry", Revision 5.3 (May 1994), in USEPA Environmental Metals Methods (94).  Referenced in Sections 611.600, 611.611, 611.612, and 611.720.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 200.9 (94)" means "Method 200.9:  Determination of Metals and Trace Elements in Water by Ultrasonic Nebulization Inductively Coupled Plasma-Atomic Emission Spectrometry", Revision 2.2 (May 1994), in USEPA Environmental Metals Methods (94).  Referenced in Sections 611.600, 611.611, and 611.612.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 245.1 (91)" means "Method 245.1:  Determination of Mercury in Water by Cold Vapor Atomic Absorption Spectrometry", Revision 2.3 (April 1991), in USEPA Environmental Metals Methods (94).  Referenced in Section 611.611.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 245.2 (74)" means "Mercury:  Method 245.2 (Automated Cold Vapor Technique)" (1974), in USEPA Inorganic Methods (83).  Referenced in Section 611.611.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 300.0 (93)" means "Method 300.0:  Determination of Inorganic Anions by Ion Chromatography", Revision 2.1 (August 1993), in USEPA Environmental Inorganic Methods (93).  Referenced in Sections 611.381 and 611.611.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 300.1 (97)" means "Method 300.1:  Determination of Inorganic Anions in Drinking Water by Ion Chromatography", Revision 1.0 (September 1997), in USEPA Organic and Inorganic Methods (00).  Referenced in Sections 611.381 and 611.611.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 302.0 (09)" means "Method 302.0:  Determination of Bromate in Drinking Water Using Two-Dimensional Ion Chromatography with Suppressed Conductivity Detection" (September 2009), USEPA, Office of Water, document number EPA 815/B-09/014.  Available from NEMI; USEPA, NSCEP (search "815B09014"); and USEPA, OGWDW (under "Disinfection Byproduct Rules (PDF)").  Referenced in Sections 611.381 and 611.382.

 

"USEPA 317.0 (01)" means "Method 317.0:  Determination of Inorganic Oxyhalide Disinfection By-Products in Drinking Water Using Ion Chromatography with the Addition of a Postcolumn Reagent for Trace Bromate Analysis", Revision 2.0 (July 2001), USEPA, Office of Ground Water and Drinking Water, Technical Support Center, document number EPA 815/B-01/001.  Available from NEMI; USEPA, NSCEP (search "815B01001"); and USEPA, OGWDW (under "Disinfection Byproduct Rules (PDF)").  Referenced in Sections 611.381 and 611.382.

 

"USEPA 321.8 (97)" means "Method 321.8:  Determination of Bromate in Drinking Waters by Ion Chromatography Inductively Coupled Plasma/Mass Spectrometry", Revision 1.0 (December 1997), in USEPA Organic and Inorganic Methods (00).  Referenced in Sections 611.381 and 611.382.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 326.0 (02)" means "Method 326.0:  Determination of Inorganic Oxyhalide Disinfection By-Products in Drinking Water Using Ion Chromatography Incorporating the Addition of a Suppressor Acidified Postcolumn Reagent for Trace Bromate Analysis", Revision 1.0 (June 2002), USEPA, Office of Ground Water and Drinking Water, Technical Support Center, document number EPA 815/R-03/007.  Available from NEMI; NTRL (document number PB2003-107402); USEPA, NSCEP (search "815R03007"); and USEPA, OGWDW (under "Disinfection Byproduct Rules (PDF)").  Referenced in Sections 611.381 and 611.382.

 

"USEPA 327.0 (05)" means "Method 327.0:  Determination of Chlorine Dioxide and Chlorite Ion in Drinking Water Using Lissamine Green B and Horseradish Peroxidase with Detection by Visible Spectrophotometry", Revision 1.1 (May 2005), USEPA, Office of Ground Water and Drinking Water, Technical Support Center, document number EPA 815/R-05/008.  Available from NEMI; USEPA, NSCEP (search "815R05008"); and USEPA, OGWDW (under "Disinfection Byproduct Rules (PDF)").  Referenced in Sections 611.381 and 611.531.

 

"USEPA 334.0 (09)" means "Method 334.0:  Determination of Residual in Drinking Water Using an On-line Chlorine Analyzer", Version 1.0 (September 2009), USEPA, Office of Ground Water and Drinking Water, Technical Support Center, document number EPA 815/B-09/013.  Available from NEMI; USEPA, NSCEP (search "815B09013"); and USEPA, OGWDW (under "Disinfection Byproduct Rules (PDF)").  Referenced in Sections 611.381 and 611.531.

 

"USEPA 335.4 (93)" means "Method 335.4:  Determination of Total Cyanide by Semi-Automated Colorimetry", Revision 1.0 (August 1993), in USEPA Environmental Inorganic Methods (93).  Referenced in Section 611.611.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 353.2 (93)" means "Method 353.2:  Determination of Inorganic Anions by Ion Chromatography", Revision 2.0 (August 1993), in USEPA Environmental Inorganic Methods (93).  Referenced in Section 611.611.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 365.1 (93)" means "Method 365.1:  Determination of Phosphorus by Automated Colorimetry", Revision 2.0 (August 1993), in USEPA Environmental Inorganic Methods (93).  Referenced in Section 611.611.

BOARD NOTE:  Also individually available from NEMI and USEPA, OGWDW (under "Inorganic Contaminants and Other Inorganic Constituents (PDF)").

 

"USEPA 415.3 (05)" means "Method 415.3:  Determination of Total Organic Carbon and Specific UV Absorbance at 254 nm in Source Water and Drinking Water", Revision 1.1 (February 2005), USEPA, National Exposure Research Laboratory, document number EPA 600/R05-055.  Available from USEPA, NSCEP (search "600R05055") and USEPA, OGWDW (under "Disinfection Byproduct Rules (PDF)").  Referenced in Section 611.381.

 

"USEPA 415.3 (09)" means "Method 415.3, "Determination of Total Organic Carbon and Specific UV Absorbance at 254 nm in Source Water and Drinking Water", Revision 1.2 (September 2009), USEPA, National Exposure Research Laboratory, document number EPA 600/R09-122.  Referenced in Section 611.381.  Available from NEMI; USEPA, NSCEP (search "600R09122"); and USEPA, OGWDW (under "Disinfection Byproduct Rules (PDF)").

 

"USEPA 502.2 (95)" means "Method 502.2:  Volatile Organic Compounds in Water by Purge and Trap Capillary Column Gas Chromatography with Photoionization and Electrolytic Conductivity Detectors in Series", Revision 2.1 (1995), in USEPA Organic Methods − Supplement III (95).  Referenced in Sections 611.381 and 611.645.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 504.1 (95)" means "Method 504.1:  1,2-Dibromomethane (EDB), 1,2-Dibromo-3-Chloropropane (DBCP), and 1,2,3-Trichloropropane (123TCP) in Water by Microextraction and Gas Chromatography", Revision 1.1 (1995), in USEPA Organic Methods − Supplement III (95).  Referenced in Section 611.645.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 505 (95)" means "Method 505:  Analysis of Organohalide Pesticides and Commercial Polychlorinated Biphenyl (PCB) Products in Water by Microextraction and Gas Chromatography", Revision 2.1 (1995), in USEPA Organic Methods − Supplement III (95).  Referenced in Sections 611.645 and 611.648.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 506 (95)" means "Method 506:  Determination of Phthalate and Adipate Esters in Drinking Water by Liquid-Liquid Extraction or Liquid-Solid Extraction and Gas Chromatography with Photoionization Detection", Revision 1.1 (1995), in USEPA Organic Methods − Supplement III (95).  Referenced in Section 611.645.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 507 (95)" means "Method 507:  Determination of Nitrogen- and Phosphorus-Containing Pesticides in Water by Gas Chromatography with a Nitrogen-Phosphorus Detector", Revision 2.1 (1995), in USEPA Organic Methods − Supplement III (95).  Referenced in Sections 611.645 and 611.648.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 508 (95)" means "Method 508:  Determination of Chlorinated Pesticides in Water by Gas Chromatography with an Electron Capture Detector", Revision 3.1 (1995), in USEPA Organic Methods − Supplement III (95).  Referenced in Sections 611.645 and 611.648.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 508A (89)" means "Method 508A:  Screening for Polychlorinated Biphenyls by Perchlorination and Gas Chromatography", Revision 1.0 (1989), in USEPA Organic Methods (91).  Referenced in Sections 611.645 and 611.646.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 508.1 (95)" means "Method 508.1:  Determination of Chlorinated Pesticides, Herbicides, and Organohalides by Liquid-Solid Extraction and Electron Capture Gas Chromatography", Revision 2.0 (1995), in USEPA Organic Methods − Supplement III (95).  Referenced in Sections 611.645 and 611.648.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 515.1 (89)" means "Method 515.1:  Determination of Chlorinated Acids in Drinking Water by Gas Chromatography with an Electron Capture Detector", Revision 4.1 (1989), in USEPA Organic Methods (91).  Referenced in Section 611.645.

 

"USEPA 515.2 (95)" means "Method 515.2:  Determination of Chlorinated Acids in Water Using Liquid-Solid Extraction and Gas Chromatography with an Electron Capture Detector", Revision 1.1 (1995), in USEPA Organic Methods − Supplement III (95).  Referenced in Section 611.645.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 515.3 (96)" means "Method 515.3:  Determination of Chlorinated Acids in Drinking Water by Liquid-Liquid Extraction, Derivatization and Gas Chromatography with Electron Capture Detection", Revision 1.0 (July 1996), in USEPA Organic and Inorganic Methods (00).  Referenced in Section 611.645.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 515.4 (00)" means "Method 515.4:  "Determination of Chlorinated Acids in Drinking Water by Liquid-Liquid Microextraction, Derivatization and Fast Gas Chromatography with Electron Capture Detection" Revision 1.0 (April 2000), USEPA, Office of Ground Water and Drinking Water, Technical Support Center, document number EPA 815/B-00/001.  Available from NEMI; USEPA, NSCEP (search "815B00001"); and USEPA, OGWDW (under "Organic Contaminants (PDF)").  Referenced in Section 611.645.

 

"USEPA 523 (11)" means "Method 523:  Determination of Triazine Pesticides and Other Degradates in Drinking Water by Gas Chromatography/Mass Spectrometry (GC/MS)", Version 1.0 (February 2011), USEPA, Office of Ground Water and Drinking Water, Standards and Risk Management Division, Technical Support Center, document number EPA 815/R-11-002.  Available from USEPA, NSCEP (search "815R11002"); and USEPA, OGWDW (under "Organic Contaminants (PDF)").  referenced in Section 611.645.

 

"USEPA 524.2 (95)" means "Method 524.2:  Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry", Revision 4.1 (1995), in USEPA Organic Methods − Supplement III (95).  Referenced in Section 611.645.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 524.3 (09)" means "Method 524.3:  Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Spectrometry", Revision 1.0 (June 2009), USEPA, Office of Ground Water and Drinking Water, Standards and Risk Management Division, Technical Support Center, document number EPA 815/B-09/009.  Available from NEMI; USEPA, NSCEP (search for "815B09009"); and USEPA, OGWDW (under "Disinfection Byproduct Rules (PDF)" and "Organic Contaminants (PDF)").  Referenced in Sections 611.381 and 611.645.

 

"USEPA 524.4 (13)" means "Method 524.4, "Measurement of Purgeable Organic Compounds in Water by Gas Chromatography/Spectrometry Using Nitrogen Purge Gas" (May 2013), USEPA, Office of Ground Water and Drinking Water, Standards and Risk Management Division, Technical Support Center, document number EPA 815/R-13/002.  Available from USEPA, NSCEP (search for "815R13002"); and USEPA, OGWDW (under "Disinfection Byproduct Rules (PDF)" and "Organic Contaminants (PDF)").  Referenced in Sections 611.381 and 611.645.

 

"USEPA 525.2 (95)" means "Method 525.2:  Determination of Organic Compounds in Drinking by Liquid-Liquid Extraction and Capillary Column Gas Chromatography/Mass Spectrometry", Revision 2.0 (1995), in USEPA Organic Methods − Supplement III (95).  Referenced in Section 611.645.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 525.3 (12)" means "Method 525.3:  Determination of Total Semivolatile Organic Chemicals in Drinking Water by Solid Phase Extraction and Capillary Column Gas Chromatography/Mass Spectrometry (GC/MS)", Version 1.0 (February 2012), USEPA, National Exposure Research Laboratory, document number EPA 600/R-12/010.  Available from USEPA, NSCEP (search "600R12010") and USEPA, OGWDW (under "Organic Contaminants (PDF)").  Referenced in Section 611.645.

 

"USEPA 531.1 (95)" means "Method 531.1:  Measurement of N-Methylcarbamoyloximes and N-Methylcarbamates in Water by Direct Aqueous Injection HPLC with Post Column Derivatization", Revision 3.1 (1995), in USEPA Organic Methods − Supplement III (95).  Referenced in Section 611.645.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 531.2 (01)" means "Method 531.2:  Measurement of N-Methylcarbamoyloximes and N-Methylcarbamates in Water by Direct Aqueous Injection HPLC with Postcolumn Derivatization", Revision 1.0 (September 2001), USEPA, Office of Ground Water and Drinking Water, Standards and Risk Management Division, Technical Support Center, document number EPA 815/B-01/002.  Available from NEMI; USEPA, NSCEP (search "815B01002"); and USEPA, OGWDW (under "Organic Contaminants (PDF)").  Referenced in Section 611.645.   See also and

 

"USEPA 536 (07)" means "Method 536:  Determination of Triazine Pesticides and Other Degradates in Drinking Water by Liquid Chromatography Electrospray Ionization Tandem Mass Spectrometry (LC/ESI-MS/MS)", Version 1.0 (October 2007), USEPA Office of Ground Water and Drinking Water, Technical Support Center, document number EPA 815/B-07/002.  Available from USEPA, NSCEP (search "815B07002") and USEPA, OGWDW (under "Organic Contaminants (PDF)").  Referenced in Section 611.645.

 

"USEPA 547 (90)" means "Method 547:  Determination of Glyphosate in Drinking Water by Direct-Aqueous-Injection HPLC, Post-Column Derivatization, and Fluorescence Detection" (July 1990), in USEPA Organic Methods − Supplement I (90).  Referenced in Section 611.645.

 

"USEPA 548.1 (92)" means "Method 548.1:  Determination of Endothall in Drinking Water by Ion-Exchange Extraction, Acidic Methanol Methylation and Gas Chromatography/Mass Spectrometry", Revision 1.0 (August 1992), in USEPA Organic Methods − Supplement II (92).  Referenced in Section 611.645.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 549.2 (97)" means "Method 549.2:  Determination of Diquat and Paraquat in Drinking Water by Liquid-Solid Extraction and High Performance Liquid Chromatography with Ultraviolet Detection", Revision 1.0 (June 1997), USEPA, Office of Research and Development, National Exposure Research Laboratory.  Available from NEMI.  Referenced in Section 611.645.

 

"USEPA 550 (90)" means "Method 550:  Determination of Polycyclic Aromatic Hydrocarbons in Drinking Water by Liquid-Liquid Extraction and HPLC with Coupled Ultraviolet and Fluorescence Detection" (July 1990), in USEPA Organic Methods − Supplement I (90).  Referenced in Section 611.645.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 550.1 (90)" means "Method 550.1:  Determination of Polycyclic Aromatic Hydrocarbons in Drinking Water by Liquid-Solid Extraction and HPLC with Coupled Ultraviolet and Fluorescence Detection" (July 1990), in USEPA Organic Methods − Supplement I (90).  Referenced in Section 611.645.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 551.1 (95)" means "Method 551.1:  Measurement of N-Methylcarbamoyloximes and N-Methylcarbamates in Water by Direct Aqueous Injection HPLC with Post Column Derivatization", Revision 1.0 (1995), in USEPA Organic Methods − Supplement III (95).  Referenced in Section 611.645.

 

"USEPA 552.1 (92)" means "Method 552.1:  Determination of Haloacetic Acids and Dalapon in Drinking Water by Ion-Exchange Liquid-Solid Extraction and Gas Chromatography with an Electron Capture Detector", Revision 1.0 (August 1992), in USEPA Organic Methods − Supplement II (92).  Referenced in Sections 611.381 and 611.645.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 552.2 (95)" means "Method 552.2:  Determination of Haloacetic Acids and Dalapon in Drinking Water by Liquid-Liquid Extraction, Derivatization and Gas Chromatography with Electron Capture Detection", Revision 1.0 (1995), in USEPA Organic Methods − Supplement III (95).  Referenced in Sections 611.381 and 611.645.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 552.3 (03)" means "Method 552.3:  Determination of Haloacetic Acids and Dalapon in Drinking Water by Liquid-Liquid Microextraction, Derivatization, and Gas Chromatography with Electron Capture Detection", Revision 1.0 (July 2003), USEPA, Office of Ground Water and Drinking Water, Technical Support Center, document number EPA 815/B-03/002.  Available from NEMI; USEPA, NSCEP (search "815B03002"); and USEPA, OGWDW (under "Disinfection Byproduct Rules (PDF)").  Referenced in Sections 611.381 and 611.645.

 

"USEPA 555 (92)" means "Method 555:  Determination of Chlorinated Acids in Water by High Performance Liquid Chromatography with a Photodiode Array Ultraviolet Detector", Revision 1.0 (August 1992), in USEPA Organic Methods − Supplement II (92).  Referenced in Section 611.645.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 557 (09)" means "Method 557:  Determination of Haloacetic Acids, Bromate, and Dalapon in Drinking Water by Ion Chromatography Electrospray Ionization Tandem Mass Spectrometry (IC-ESI-MS/MS)", Version 1.0 (September 2009), USEPA, Office of Ground Water and Drinking Water, Technical Support Center, document number EPA 815/B-09/012.  Available from NEMI; USEPA, NSCEP (search "815B09012"); and USEPA, OGWDW (under "Disinfection Byproduct Rules (PDF)").  Referenced in Sections 611.381, 611.382, and 611.645.

 

"USEPA 900.0 (80)" means "Gross Alpha and Gross Beta Radioactivity in Drinking Water − Method 900.0" (1980), in USEPA Radioactivity Methods (80).  Referenced in Section 611.720.

BOARD NOTE:  Also individually available from NEMI and USEPA, OGWDW (under "Radionuclides (PDF)").

 

"USEPA 900.0 (18)" means Method 900.0, Revision 1.0 "Gross Alpha and Gross Beta Radioactivity in Drinking Water" (February 2018), USEPA, Office of Water, document number EPA 815/B-18/002.  Also available from USEPA, NSCEP (search "815B18002") and USEPA, OGWDW (under "Radionuclides (PDF)").

 

"USEPA 901.0 (80)" means "Radioactive Cesium in Drinking Water − Method 901.0" (1980), in USEPA Radioactivity Methods (80).  Referenced in Section 611.720.

BOARD NOTE:  Also individually available from NEMI and USEPA, OGWDW (under "Radionuclides (PDF)").

 

"USEPA 901.1 (80)" means "Gamma Emitting Radionuclides in Drinking Water − Method 901.1" (1980), in USEPA Radioactivity Methods (80).  Referenced in Section 611.720.

BOARD NOTE:  Also individually available from NEMI and USEPA, OGWDW (under "Radionuclides (PDF)").

 

"USEPA 902.0 (80)" means "Radioactive Iodine in Drinking Water − Method 902.0" (1980), in USEPA Radioactivity Methods (80).  Referenced in Section 611.720.

 

"USEPA 903.0 (80)" means "Alpha-Emitting Radium Isotopes in Drinking Water − Method 903.0" (1980), in USEPA Radioactivity Methods (80).  Referenced in Section 611.720.

BOARD NOTE:  Also individually available from NEMI and USEPA, OGWDW (under "Radionuclides (PDF)").

 

"USEPA 903.0 (21)" means "Method 903.0, Revision 1.0:  Alpha-Emitting Radium Isotopes in Drinking Water", doc. no. EPA 815-B-21-002 (January 2021).  Available from USEPA, NSCEP (nepis.epa.gov; search:  "815B21002").  Referenced in Section 611.720.

 

"USEPA 903.1 (80)" means "Radium-226 in Drinking Water Radon Emanation Technique − Method 903.1" (1980), in USEPA Radioactivity Methods (80).  Referenced in Section 611.720.

BOARD NOTE:  Also individually available from NEMI and USEPA, OGWDW (under "Radionuclides (PDF)").

 

"USEPA 903.1 (21)" means "Method 903.1, Revision 1.0:  Radium-226 in Drinking Water Radon Emanation Technique", doc. no. EPA 815-B-21-003 (January 2021).  Available from USEPA, NSCEP (nepis.epa.gov; search:  "815B21003").  Referenced in Section 611.720.

 

"USEPA 904.0 (80)" means "Radium-228 in Drinking Water − Method 904.0" (1980), in USEPA Radioactivity Methods (80).  Referenced in Section 611.720.

BOARD NOTE:  Also individually available from NEMI and USEPA, OGWDW (under "Radionuclides (PDF)").

 

"USEPA 904.0 (22)" means "Radium-228 in Drinking Water − Method 904.0", Revision 1.0 (2022), in USEPA Radioactivity Methods (80).  Referenced in Section 611.720.

 

"USEPA 905.0 (80)" means "Radioactive Strontium in Drinking Water − Method 905.0" (1980), in USEPA Radioactivity Methods (80).  Referenced in Section 611.720.

BOARD NOTE:  Also individually available from NEMI and USEPA, OGWDW (under "Radionuclides (PDF)").

 

"USEPA 906.0 (80)" means "Tritium in Drinking Water − Method 906.0" (1980), in USEPA Radioactivity Methods (80).  Referenced in Section 611.720.

BOARD NOTE:  Also individually available from NEMI and USEPA, OGWDW (under "Radionuclides (PDF)").

 

"USEPA 908.0 (80)" means "Uranium in Drinking Water − Radiochemical Method − Method 908.0" (1980), in USEPA Radioactivity Methods (80).  Referenced in Section 611.720.

BOARD NOTE:  Also individually available from NEMI.

 

"USEPA 908.1 (80)" means "Uranium in Drinking Water − Fluorometric Method − Method 908.1" (1980), in USEPA Radioactivity Methods (80).  Referenced in Section 611.720.

BOARD NOTE:  Also individually available from NEMI and USEPA, OGWDW (under "Radionuclides (PDF)").

 

"USEPA 1600 (02)" means "Method 1600:  Enterococci in Water by Membrane Filtration Using membrane-Enterococcus Indoxyl-β-D-Glucoside Agar (mEI)" (September 2002), USEPA, Office of Water, document number EPA 821/R–02/022.  Available from NEMI; USEPA, NSCEP (search "821R02022"); and USEPA, OGWDW (under "Ground Water Rule (PDF)").  Referenced in Section 611.802.

BOARD NOTE:  SM 9230 C (93) and SM 9230 (13), "Fecal Streptococcus and Enterococcus Groups, Membrane Filter Techniques", are USEPA-approved variations of this method.

 

"USEPA 1601 (01)" means "Method 1601:  Male-specific (F+) and Somatic Coliphage in Water by Two-step Enrichment Procedure" (April 2001), USEPA, Office of Water, document number EPA 821/R–01/030.  Available from NEMI and USEPA, NSCEP (search "821R01030"); and USEPA, OGWDW (under "Ground Water Rule (PDF)").  Referenced in Section 611.802.

 

"USEPA 1602 (01)" means "Method 1602:  Male-specific (F+) and Somatic Coliphage in Water by Single Agar Layer (SAL) Procedure" (April 2001), USEPA, Office of Water, document number EPA 821/R–01/029.  Available from NEMI and USEPA, NSCEP (search "821R01029"); and USEPA, OGWDW (under "Ground Water Rule (PDF)").  Referenced in Section 611.802.

 

"USEPA 1604 (02)" means "Method 1604:  Total Coliforms and Escherichia coli in Water by Membrane Filtration Using a Simultaneous Detection Technique (MI Medium)" (September 2002), USEPA, Office of Water, document number EPA 821/R-02/024.  Available from NEMI and USEPA, NSCEP (search "821R02024"); and USEPA, OGWDW (under "Ground Water Rule (PDF)", "Revised Total Coliforms Rule (PDF)", and "Surface Water Treatment Rule (PDF)").  Referenced in Sections 611.802 and 611.1052.

 

"USEPA 1613 (94)" means "Method 1613:  Tetra- through Octa-Chlorinated Dioxins and Furans by Isotope Dilution HRGC/HRMS", Revision B (October 1994), USEPA, Office of Water, Engineering and Analysis Division, document number EPA 821/B-94/005.  Available from NEMI; NTRL (document number PB95-104774); USEPA, NSCEP (search "821B94005"); and USEPA, OGWDW (under "Organic Contaminants (PDF)").  Referenced in Section 611.645.

 

"USEPA 1622 (01)" means "Method 1622:  Cryptosporidium in Water by Filtration/IMS/FA" (April 2001), USEPA, Office of Water, document number EPA 821/R-01/026.  Available from NEMI; and USEPA, NSCEP (search "821R01026").  Referenced in Section 611.1007.

 

"USEPA 1622 (05)" means "Method 1622:  Cryptosporidium in Water by Filtration/IMS/FA" (December 2005), USEPA, Office of Ground Water and Drinking Water, document number EPA 815/R-05/001.  Available from USEPA, NSCEP (search "815R05001") and USEPA, OGWDW (under "Long Term 2 Enhanced Surface Water Treatment Rule (PDF)").  Referenced in Sections 611.1004 and 611.1007.

 

"USEPA 1623 (99)" means "Method 1623:  Cryptosporidium and Giardia in Water by Filtration/IMS/FA" (April 1999), USEPA, Office of Ground Water and Drinking Water, document number EPA 821/R-99/006.  Available from USEPA, NSCEP (search "821R99006").  Referenced in Section 611.1007.

 

"USEPA 1623 (01)" means "Method 1623:  Cryptosporidium and Giardia in Water by Filtration/IMS/FA" (April 2001), USEPA, Office of Ground Water and Drinking Water, document number EPA 821/R-01/025.  Available from NEMI and USEPA, NSCEP (search "821R01025").  Referenced in Section 611.1007.

 

"USEPA 1623 (05)" means "Method 1623:  Cryptosporidium and Giardia in Water by Filtration/IMS/FA" (December 2005), USEPA, Office of Ground Water and Drinking Water, document number EPA 815/R-05/002.  Available from USEPA, NSCEP (search "815R05002") and USEPA, OGWDW (under "Long Term 2 Enhanced Surface Water Treatment Rule (PDF)").  Referenced in Sections 611.1004 and 611.1007.

 

"USEPA 1623.1 (12)" means "Method 1623.1, "Method 1623.1:  Cryptosporidium and Giardia in Water by Filtration/IMS/FA" (January 2012), USEPA, Office of Ground Water and Drinking Water, document number EPA 816/R-12/001.  Available from USEPA, NSCEP (search "816R12001") and USEPA, OGWDW (under "Long Term 2 Enhanced Surface Water Treatment Rule (PDF)").  Referenced in Section 611.1004.

 

USEPA Documents Containing Multiple Numbered Methods

 

"USEPA Environmental Inorganic Methods (93)" means "Methods for the Determination of Inorganic Substances in Environmental Samples" (August 1993), USEPA, Environmental Monitoring Systems Laboratory, document number EPA 600/R-93-100 (for USEPA 180.1 (93), USEPA 300.0 (93), USEPA 335.4 (93), USEPA 353.2 (93), and USEPA 365.1 (93) only).  Available from NTRL (document number PB94-121811) and USEPA, NSCEP (search "600R93100").

 

"USEPA Environmental Metals Methods (94)" means "Methods for the Determination of Metals in Environmental Samples − Supplement I", May 1994, USEPA, Environmental Monitoring Systems Laboratory, document number EPA 600/R-94-111 (for USEPA 200.7 (94), USEPA 200.8 (94), USEPA 200.9 (94), and USEPA 245.1 (94) only).  Referenced in Sections 611.600, 611.611, 611.612, and 611.720.  Available from NTRL (document number PB84-125472) and USEPA, NSCEP (search "600R94111").

 

"USEPA Inorganic Methods (83)" means "Methods for Chemical Analysis of Water and Wastes"(March 1983), USEPA, Office of Research and Development, document number EPA 600/4-79-020 (USEPA 150.1 (71), USEPA 150.2 (82), and USEPA 245.2 (74) only).  Available from NTRL (document number PB84-128677) and USEPA, NSCEP (search "600479020").  Referenced in Section 611.611.

 

"USEPA Organic and Inorganic Methods (00)" means "Methods for the Determination of Organic and Inorganic Compounds in Drinking Water, Volume 1" (August 2000), USEPA, Office of Water and Office of Research and Development, document number EPA 815/R-00/014 (Methods 300.1 (97), USEPA 321.8 (97), and USEPA 515.3 (96) only).  Available from NTRL (document number PB2000-106981) and USEPA, NSCEP (search "815R00014").

 

"USEPA Organic Methods (91)" means "Methods for the Determination of Organic Compounds in Drinking Water", (December 1988 (revised July 1991)), USEPA, Office of Research and Development, document number EPA 600/4-88/039 (USEPA 508A (89) and USEPA 515.1 (89) only).  Available from NTRL (document number PB91-231480) and USEPA, NSCEP (search "600488039") and USEPA, OGWDW.

 

"USEPA Organic Methods − Supplement I (90)" means "Methods for the Determination of Organic Compounds in Drinking Water − Supplement I" (July 1990), USEPA, Environmental Monitoring Systems Laboratory, document number EPA 600/4-90/020 (USEPA 547 (90), USEPA 550 (90) and USEPA 550.1 (90) only).  Available from NTRL (document number PB91-146027) and USEPA, NSCEP (search "600490020").

 

"USEPA Organic Methods − Supplement II (92)" means "Methods for the Determination of Organic Compounds in Drinking Water − Supplement II" (August 1992), USEPA, Office of Research and Development, document number EPA 600/R-92/129 (USEPA 548.1 (92), USEPA 552.1 (92), and USEPA 555 (92) only).  Available from NTRL (document number PB92-207703) and USEPA, NSCEP (search "600R92129").

 

"USEPA Organic Methods − Supplement III (95)" means "Methods for the Determination of Organic Compounds in Drinking Water − Supplement III" (August 1995), USEPA, Office of Research and Development, document number EPA 600/R-95/131 (USEPA 502.2 (95), USEPA 504.1 (95), USEPA 505 (95), USEPA 506 (95), USEPA 507 (95), USEPA 508 (95), USEPA 508.1 (95), USEPA 515.2 (95), USEPA 524.2 (95), USEPA 525.2 (95), USEPA 531.1 (95), USEPA 551.1 (95), and USEPA 552.2 (95) only).  Available from NTRL (document number PB95-261616) and USEPA, NSCEP (search "600R95131").

 

"USEPA Radioactivity Methods (80)" means "Prescribed Procedures for Measurement of Radioactivity in Drinking Water" (August 1980), USEPA, Office of Research and Development, Environmental Monitoring and Support Laboratory, document number EPA 600/4-80/032 (USEPA 900.0 (80), USEPA 901.0 (80), USEPA 901.1 (80), USEPA 902.0 (80), USEPA 903.0 (80), USEPA 903.1 (80), USEPA 904.0 (80), USEPA 905.0 (80), USEPA 906.0 (80), USEPA 908.0 (80), and USEPA 908.1 (80) only.).  Available from NTRL (document number PB80-224744); USEPA, NSCEP (search "821480032"); and USEPA, OGWDW (under "Radionuclides (PDF))".

 

"USEPA Radiochemistry Procedures (84)" means "Radiochemistry Procedures Manual" (June 1984), USEPA, Eastern Environmental Radiation Facility, document number EPA 520/5-84-006 (USEPA 00-01 (84), USEPA 00-02 (84), USEPA 00-07 (84), USEPA H-02 (84), USEPA Ra-03 (84), USEPA Ra-04 (84), USEPA Ra-05 (84), USEPA Sr-04 (84) only).  Available from NTRL (document number PB84215581); USEPA, NSCEP (search "520584006"); and USEPA, OGWDW.

 

Unnumbered Methods

 

"USEPA ARP (73)" means "Procedures for Radiochemical Analysis of Nuclear Reactor Aqueous Solutions" (May 1973), USEPA, Office of Research and Monitoring, National Environmental Research Center, document number EPA-R4-73-014.  Available from NTRL (document number PB222154) and USEPA, NSCEP (search "R473014").  Referenced in Section 611.720.

 

"USEPA IRM (76)" means "Interim Radiochemical Methodology for Drinking Water" (March 1976), USEPA, Office of Research and Development, Environmental Monitoring and Support Laboratory, document number EPA 600/4-75-008 (revised) (pages 1 through 37 only).  Available from NTRL (document number PB253258); USEPA, NSCEP (search "600475008A"); and USEPA, OGWDW (under "Radionuclides (PDF)").  Referenced in Section 611.720.

 

"USEPA IRM (76), pages 1-3" means pages 1 through 3, "Gross Alpha and Beta Radioactivity in Drinking Water", in USEPA IRM (76).  Referenced in Section 611.720.

 

"USEPA IRM (76), pages 4-5" means pages 4 through 5, "Radioactive Cesium in Drinking Water", in USEPA IRM (76).  Referenced in Section 611.720.

 

"USEPA IRM (76), pages 6-8" means pages 6 through 8, "Radioactive Iodine in Drinking Water:  Precipitation Method", in USEPA IRM (76).  Referenced in Section 611.720.

 

"USEPA IRM (76), pages 9-12" means pages 9 through 12, "Radioactive Iodine in Drinking Water:  Distillation Method", in USEPA IRM (76).  Referenced in Section 611.720.

 

"USEPA IRM (76), pages 13-15" means pages 13 through 15, "Alpha-Emitting Radium Isotopes in Drinking Water:  Precipitation Method", in USEPA IRM (76).  Referenced in Section 611.720.

 

"USEPA IRM (76), pages 16-23" means pages 16 through 23, "Radium-226 in Drinking Water:  Radon Emanation Technique", in USEPA IRM (76).  Referenced in Section 611.720.

 

"USEPA IRM (76), pages 24-28" means pages 24 through 28, "Radium-228 in Drinking Water:  Sequential Method Radium-228/Radium-226", in USEPA IRM (76).  Referenced in Section 611.720.

 

"USEPA IRM (76), pages 29-33" means pages 29 through 33, "Radioactive Strontium in Drinking Water", in USEPA IRM (76).  Referenced in Section 611.720.

 

"USEPA IRM (76), pages 34-37" means pages 34 through 37, "Tritium in Drinking Water", in USEPA IRM (76).  Referenced in Section 611.720.

 

"USEPA RCA (79)" means "Radiochemical Analytical Procedures for Analysis of Environmental Samples" (March 1979), USEPA, Environmental Monitoring and Support Laboratory, document number EMSL-LV-0539-17 (pages 1 through 5, 19 through 48, 65 through 73, and 87 through 95 only).  Available from NTRL (document number EMSLLV053917); USEPA, NSCEP (search "EMSLLV053917") and USEPA, OGWDW (under "Radionuclides (PDF)").  Referenced in Section 611.720.

 

"USEPA RCA (79), pages 1-5" means pages 1 through 5, "Determination of Gross Alpha and Beta in Water", in USEPA RCA (79).  Referenced in Section 611.720.

 

"USEPA RCA (79), pages 19-32" means pages 19 through 32, "Determination of Radium-226 and Radium-228 in Water, Soil, Air, and Biological Tissue", in USEPA RCA (79).  Referenced in Section 611.720.

 

"USEPA RCA (79), pages 33-48" means pages 33 through 48, "Isotopic Determination of Plutonium, Uranium, and Thorium in Water, Soil, Air, and Biological Tissue", in USEPA RCA (79).  Referenced in Section 611.720.

 

"USEPA RCA (79), pages 65-73" means pages 65 through 73, "Determination of Strontium-89 and Strontium-90 in Water, Soil, Air, and Biological Tissue", in USEPA RCA (79).  Referenced in Section 611.720.

 

"USEPA RCA (79), pages 87-91" means pages 87 through 91, "Determination of Tritium in Water, Soil, Air, and Biological Tissue (Direct Method)", in USEPA RCA (79).  Referenced in Section 611.720.

 

"USEPA RCA (79), pages 92-95" means pages 92 through 95, "Isotopic Analysis by Gamma Ray Spectra Using Lithium-Drifted Geranium Detectors", in USEPA RCA (79).  Referenced in Section 611.720.

 

"USEPA Technical Notes (94)" means "Technical Notes on Drinking Water Methods" (October 1994), document number EPA 600/R-94-173, USEPA, Office of Research and Development.  Available from NTRL (document number PB95-104766); and USEPA, NSCEP (search "600R94173").  Referenced in Sections 611.531, 611.611, and 611.645.

 

Sources of USEPA Methods

 

NEMI.  National Environmental Method Index (on-line at www.nemi.gov/home/).

 

NTRL.  National Technical Reports Library, U.S. Department of Commerce, 5301 Shawnee Road, Alexandria, VA  22312 (703-605-6000 or 800-553-6847, https://ntrl.ntis.gov/NTRL/).

 

USEPA, NSCEP.  United States Environmental Protection Agency, National Service Center for Environmental Publications, P.O. Box 42419, Cincinnati, OH  45242-0419, accessible on-line and available by download from http://www.epa.gov/nscep/ using the search term indicated for the individual method).

 

USEPA, OGWDW.  United States Environmental Protection Agency, Office of Ground Water and Drinking Water (methods cited as available are directly available through a link in the indicated list on www.epa.gov/dwanalyticalmethods/approved-drinking-water-analytical-methods).

 

USGS Methods.  All documents available from United States Geological Survey, Federal Center, Box 25286, Denver, CO  80225-0425.

 

"USGS I-1030-85" means "Alkalinity, electrometric titration, I-1030-85", in "Techniques of Water-Resource Investigation of the United States Geological Survey", 3^rd ed. (1989), Book 5, Chapter A1, "Methods for Determination of Inorganic Substances in Water and Fluvial Sediments".  Available at pubs.usgs.gov/twri/twri5-a1/pdf/TWRI_5-A1.pdf.  Referenced in Section 611.611.

 

"USGS I-1601-85" means "Phosphorus, orthophosphate, colorimetric, phosphomolybdate, I-1601-85", in "Techniques of Water-Resource Investigation of the United States Geological Survey", 3^rd ed. (1989), Book 5, Chapter A1, "Methods for Determination of Inorganic Substances in Water and Fluvial Sediments".  Available at pubs.usgs.gov/twri/twri5-a1/pdf/TWRI_5-A1.pdf.  Referenced in Section 611.611.

 

"USGS I-1700-85" means "Silica, colorimetric, molybdate blue, I-1700-85", in "Techniques of Water-Resource Investigation of the United States Geological Survey", 3^rd ed. (1989), Book 5, Chapter A1, "Methods for Determination of Inorganic Substances in Water and Fluvial Sediments".  Available at pubs.usgs.gov/twri/twri5-a1/pdf/TWRI_5-A1.pdf.  Referenced in Section 611.611.

 

"USGS I-2598-85" means "Phosphorus, orthophosphate, colorimetric, phosphomolybdate, automated-discrete, I-2598-85", in "Techniques of Water-Resource Investigation of the United States Geological Survey", 3^rd ed. (1989), Book 5, Chapter A1, "Methods for Determination of Inorganic Substances in Water and Fluvial Sediments".  Available at pubs.usgs.gov/twri/twri5-a1/pdf/TWRI_5-A1.pdf.  Referenced in Section 611.611.

 

"USGS I-2601-90" means "Phosphorus, orthophosphate, colorimetry, phosphomolybdate, automated segment-flow, I-2601-90", in "Methods for Analysis by the U.S. Geological Survey National Water Quality Laboratory − Determination of Inorganic and Organic Constituents in Water and Fluvial Sediments", U.S. Geological Survey, Open File Report 93-125 (1993).  Available at pubs.usgs.gov/publication/ofr93125 and https://www.nemi.gov/methods/method_summary/8907/.  Referenced in Section 611.611.

 

"USGS I-2700-85" means "Silica, colorimetric, molybdate blue, automated-segmented flow, I-2700-85", in "Techniques of Water-Resource Investigation of the United States Geological Survey", 3^rd ed. (1989), Book 5, Chapter A1, "Methods for Determination of Inorganic Substances in Water and Fluvial Sediments".  Available at pubs.usgs.gov/twri/twri5-a1/pdf/TWRI_5-A1.pdf.  Referenced in Section 611.611.

 

"USGS I-3300-85" means "Cyanide, colorimetric, pyridine-pyrazolone, I-3300-85", in "Techniques of Water-Resource Investigation of the United States Geological Survey", 3rd ed. (1989), Book 5, Chapter A1, "Methods for Determination of Inorganic Substances in Water and Fluvial Sediments".  Available at pubs.usgs.gov/twri/twri5-a1/pdf/TWRI_5-A1.pdf.  Referenced in Section 611.611.

 

"USGS R-1110-76" means "Cesium-137 and cesium-134, dissolved.  Inorganic ion-exchange method − gamma counting, R-1110-76", in "Techniques of Water-Resource Investigation of the Water Resources Investigations of the United States Geological Survey", Book 5, Chapter A-5, "Methods for Determination of Radioactive Substances in Water and Fluvial Sediments" (1977).  Available at pubs.usgs.gov/twri/twri5a5/pdf/TWRI_5-A5.pdf.  Referenced in Section 611.720.

 

"USGS R-1111-76" means "Radiocesium, dissolved, as cesium-137.  Inorganic ion-exchange method − beta counting, R-1111-76", in "Techniques of Water-Resource Investigation of the Water Resources Investigations of the United States Geological Survey", Book 5, Chapter A-5, "Methods for Determination of Radioactive Substances in Water and Fluvial Sediments" (1977).  Available at pubs.usgs.gov/twri/twri5a5/pdf/TWRI_5-A5.pdf.  Referenced in Section 611.720.

 

"USGS R-1120-76" means "Gross alpha and beta radioactivity, dissolved and suspended, R-1120-76", in "Techniques of Water-Resource Investigation of the Water Resources Investigations of the United States Geological Survey", Book 5, Chapter A-5, "Methods for Determination of Radioactive Substances in Water and Fluvial Sediments" (1977).  Available at pubs.usgs.gov /twri/twri5a5/pdf/TWRI_5-A5.pdf.  Referenced in Section 611.720.

 

"USGS R-1140-76" means "Radium, dissolved, as radium-226.  Precipitation method, R-1140-76", in "Techniques of Water-Resource Investigation of the Water Resources Investigations of the United States Geological Survey", Book 5, Chapter A-5, "Methods for Determination of Radioactive Substances in Water and Fluvial Sediments" (1977).  Available at pubs.usgs.gov/twri/twri5a5/pdf/TWRI_5-A5.pdf.  Referenced in Section 611.720.

 

"USGS R-1141-76" means "Radium-226, dissolved.  Radon emanation method, R-1141-76", in "Techniques of Water-Resource Investigation of the Water Resources Investigations of the United States Geological Survey", Book 5, Chapter A-5, "Methods for Determination of Radioactive Substances in Water and Fluvial Sediments" (1977).  Available at pubs.usgs.gov /twri/twri5a5/pdf/TWRI_5-A5.pdf.  Referenced in Section 611.720.

 

"USGS R-1142-76" means "Radium-228, dissolved.  Determination by separation and counting of actinium-228, R-1142-76", in "Techniques of Water-Resource Investigation of the Water Resources Investigations of the United States Geological Survey", Book 5, Chapter A-5, "Methods for Determination of Radioactive Substances in Water and Fluvial Sediments" (1977).  Available at pubs.usgs.gov/twri/twri5a5/pdf/TWRI_5-A5.pdf.  Referenced in Section 611.720.

 

"USGS R-1160-76" means "Strontium-90, dissolved.  Chemical separation and precipitation method, R-1160-76", in "Techniques of Water-Resource Investigation of the Water Resources Investigations of the United States Geological Survey", Book 5, Chapter A-5, "Methods for Determination of Radioactive Substances in Water and Fluvial Sediments" (1977).  Available at pubs.usgs.gov/twri/twri5a5/pdf/TWRI_5-A5.pdf.  Referenced in Section 611.720.

 

"USGS R-1171-76" means "Tritium.  Liquid scintillation, Denver lab method − gamma counting, R-1171-76", in "Techniques of Water-Resource Investigation of the Water Resources Investigations of the United States Geological Survey", Book 5, Chapter A-5, "Methods for Determination of Radioactive Substances in Water and Fluvial Sediments" (1977).  Available at pubs.usgs.gov/twri/twri5a5/pdf/TWRI_5-A5.pdf.  Referenced in Section 611.720.

 

"USGS R-1180-76" means "Uranium, dissolved.  Fluorometric method − direct, R-1180-76", in "Techniques of Water-Resource Investigation of the Water Resources Investigations of the United States Geological Survey", Book 5, Chapter A-5, "Methods for Determination of Radioactive Substances in Water and Fluvial Sediments" (1977).  Available at pubs.usgs.gov/twri/twri5a5/ pdf/TWRI_5-A5.pdf.  Referenced in Section 611.720.

 

"USGS R-1181-76" means "Uranium, dissolved.  Fluorometric method − extraction procedure, R-1181-76", in "Techniques of Water-Resource Investigation of the Water Resources Investigations of the United States Geological Survey", Book 5, Chapter A-5, "Methods for Determination of Radioactive Substances in Water and Fluvial Sediments" (1977).  Available at pubs.usgs.gov/twri/twri5a5/pdf/TWRI_5-A5.pdf.  Referenced in Section 611.720.

 

"USGS R-1182-76" means "Uranium, dissolved, isotopic ratios.  Alpha spectrometry − chemical separation, R-1182-76", in "Techniques of Water-Resource Investigation of the Water Resources Investigations of the United States Geological Survey", Book 5, Chapter A-5, "Methods for Determination of Radioactive Substances in Water and Fluvial Sediments" (1977).  Available at pubs.usgs.gov/twri/twri5a5/pdf/TWRI_5-A5.pdf.  Referenced in Section 611.720.

 

"Waters B-1011 (87)" means "Waters Test Method for Determination of Nitrite/Nitrate in Water Using Single Column Ion Chromatography", Method B-1011 (August 1987).  Available from Waters Corporation, Technical Services Division, 34 Maple St., Milford, MA  01757 (800-252-4752 or 508-478-2000, www.waters.com) and USEPA, OGWDW (under "Inorganic Contaminants and Other Inorganic Constituents (PDF)").  Referenced in Section 611.611.

 

b)         The Board incorporates the following federal regulations by reference:

 

19 CFR 101.1 (2022) (Definitions), referenced in Section 611.126.

 

40 CFR 3.3 (2021) (What Definitions Are Applicable to This Part?), referenced in Section 611.105.

 

40 CFR 3.10 (2021) (What Are the Requirements for Electronic Reporting to EPA?), referenced in Section 611.105.

 

40 CFR 3.2000 (2021) (What Are the Requirements Authorized State, Tribe, and Local Programs' Reporting Systems Must Meet?), referenced in Section 611.105.

 

40 CFR 136.3(a) (2021), referenced in Section 611.1004.

 

Appendix B to 40 CFR 136 (2021), referenced in Sections 611.359, 611.609, and 611.646.

 

40 CFR 141.21(f)(6)(i) and (f)(6)(ii) (2021), referenced in Section 611.802.

 

40 CFR 142.20(b)(1) (2021), referenced in Section 611.112.

 

Subpart G of 40 CFR 142 (2021), referenced in Section 611.113.

 

c)         This Part incorporates no later amendments or editions.

 

(Source:  Amended at 47 Ill. Reg. 18996, effective December 7, 2023)

 

Section 611.103  Severability

 

If a court of competent jurisdiction adjudges any provision of this Part invalid or determines applying it to any person or in any circumstance invalid, the invalidity of the provision does not affect the validity of this Part as a whole or any Subpart, Section, subsection, sentence, or clause the court's order does not adjudge invalid.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.105  Electronic Reporting

 

Submitting any document to comply with this Part as an electronic document in lieu of a paper document must comply with this Section.

 

a)         Scope and Applicability

 

1)         The USEPA, the Board, or the Agency may provide for submitting electronic documents in lieu of paper documents.  This Section does not require the submission of electronic documents in lieu of paper documents.  This Section provides for submitting an electronic version of any document the supplier must submit to USEPA or the Agency under certain rules:

 

A)        To USEPA directly under Title 40 of the Code of Federal Regulations; or

 

B)        To the Board or the Agency under any provision of 35 Ill. Adm. Code 611.

 

2)         A supplier may only submit an electronic document under specific circumstances:

 

A)        For submitting documents to USEPA, a supplier may submit an electronic document only after USEPA publishes a Federal Register notice that USEPA will receive the specific document or type of document in an electronic format; or

 

B)        For submitting documents to the State, a supplier may submit an electronic document only after the Board or the Agency begins using an electronic document receiving system that USEPA approves under 40 CFR 3.1000, so long as the system complies with 40 CFR 3.2000, incorporated by reference in Section 611.102(c), and USEPA does not withdraw its approval in writing.

 

3)         This Section does not apply to specific documents, whether or not the supplier submits the document to satisfy the requirements cited in subsection (a)(1):

 

A)        Any document the supplier submits via facsimile;

 

B)        Any document the supplier submits via magnetic or optical media, such as a diskette, compact disc, digital video disc, or tape; or

 

C)        Any data transfer between USEPA, any state, or any local government and the Board or the Agency as part of administrative arrangements to share data.

 

4)         Upon USEPA conferring written approval for submitting any types of documents as electronic documents in lieu of paper documents, as described in subsection (a)(2)(B), the Agency or the Board, as appropriate, must publish a Notice of Public Information in the Illinois Register that describes the documents approved for submission as electronic documents, the USEPA-approved electronic document receiving system for receiving them, the acceptable formats and procedures for their submission, and, as applicable, the date on which the Board or the Agency will begin to receive those submissions.  In the event of USEPA withdrawing approval for receiving any type of document as an electronic document in lieu of a paper document, the Board or the Agency must similarly cause publication of a Notice of Public Information in the Illinois Register.

 

BOARD NOTE:  Subsection (a) derives from 40 CFR 3.1, 3.2, 3.10, 3.20, and 3.1000.

 

b)         Definitions.  For the purposes of this Section, terms have the meanings 40 CFR 3.3, incorporated by reference in 35 Ill. Adm. Code 611.102(c), attributes them.

 

c)         Procedures for Submitting Electronic Documents to USEPA in Lieu of Paper Documents.  Except as provided in subsection (a)(3), any person Title 40 of the Code of Federal Regulations requires to create and submit or otherwise provide a document to USEPA may satisfy this requirement with an electronic document in lieu of a paper document upon meeting certain conditions:

 

1)         The person satisfies the requirements of 40 CFR 3.10, incorporated by reference in Section 611.102(c); and

 

2)         USEPA first publishes a notice in the Federal Register, as subsection (a)(2)(A) describes.

 

BOARD NOTE:  Subsection (c) derives from 40 CFR 3.2(a) and subpart B of 40 CFR 3.

 

d)        Procedures for Submitting Electronic Documents to the Board or the Agency in Lieu of Paper Documents

 

1)         The Board or the Agency may establish procedural rules for electronically submitting documents.  The Board or the Agency must establish any rules under the Administrative Procedure Act [5 ILCS 100/5].

 

2)         The Board or the Agency may accept electronic documents under this Section only as subsection (a)(2)(B) provides.

 

BOARD NOTE:  Subsection (d) derives from 40 CFR 3.2(b) and subpart D of 40 CFR 3.

 

e)         Effects of Submitting an Electronic Document in Lieu of a Paper Document

 

1)         A person failing to comply with this Section when electronically submitting a document is subject to the penalties prescribed for failing to comply with the requirement to file that document.

 

2)         The electronic signature on a document a person files electronically to satisfy a reporting requirement legally binds, obligates, and makes the signer responsible to the same extent as would the filer's filing a paper document bearing the signer's handwritten signature.

 

3)         Proof that the signer used a particular signature device to create an electronic signature establishes that the individual uniquely entitled to use the device did so intending to sign the electronic document and give it effect.

 

4)         Nothing in this Section limits using  electronic documents or information derived from electronic documents as evidence in enforcement or other proceedings.

 

BOARD NOTE:  Subsection (e) derives from 40 CFR 3.4 and 3.2000(c).

 

f)         Public Document Subject to State Laws.  Any electronic document a person files with the Board is a public document.  The document, its submission, its retention by the Board, and its availability for public inspection and copying are subject to various State laws:

 

1)         The Administrative Procedure Act [5 ILCS 100];

 

2)         The Freedom of Information Act [5 ILCS 140];

 

3)         The State Records Act [5 ILCS 160];

 

4)         The Electronic Commerce Security Act [5 ILCS 175];

 

5)         The Environmental Protection Act;

 

6)         Regulations relating to public access to Board records (2 Ill. Adm. Code 2175); and

 

7)         Board procedural rules relating to protection of trade secrets and confidential information (35 Ill. Adm. Code 130).

 

g)         Nothing in this Section or any rule adopted under subsection (d)(1) creates any right or privilege to electronically submit any document.

 

BOARD NOTE:  Subsection (g) derives from 40 CFR 3.2(c).

 

BOARD NOTE:  This Section derives from 40 CFR 3 and 142.10(g).

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.107  Agency Inspection of PWS Facilities (Repealed)

 

(Source:  Repealed at 43 Ill. Reg. 8206, effective July 26, 2019)

 

Section 611.108  Delegation to Local Government

 

The Agency may delegate portions of its inspection, investigating, and enforcement functions to units of local government under Section 4(r) of the Act.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.109  Enforcement

 

a)         Any person may file an enforcement action under Title VIII of the Act.

 

b)         A complainant may use the results of monitoring this Part requires in an enforcement action.

 

BOARD NOTE:  This Section derives from 40 CFR 141.22(e)and 141.23(a)(4).

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.110  Special Exception Permits

 

a)         The Agency must evaluate a request for a SEP granting relief from monitoring requirements of Section 611.601, 611.602, or 611.603 (IOCs, excluding the Section 611.603 monitoring frequency requirements for cyanide); Section 611.646(f) (a GWS supplier for Phase I, Phase II, and Phase V VOCs); Section 611.646(d) (only as to initial monitoring for 1,2,4-trichlorobenzene); or Section 611.648(d) (Phase II, Phase IIB, and Phase V SOCs) under this Section.  The Agency must evaluate on the basis of known previous use (including transport, storage, or disposal) of the contaminant in the watershed or zone of influence of the system under 35 Ill. Adm. Code 671.

 

BOARD NOTE:  The Agency may only issue a SEP from the Section 611.603 monitoring frequency for cyanide based on subsection (c), not based on this subsection (a).

 

1)         If the Agency determines that there was no prior use of the contaminant in the water system's watershed or zone of influence, the Agency must issue the SEP; or

 

2)         If anyone previously used the contaminant or the previous use is unknown, the Agency must consider certain factors:

 

A)        Previous analytical results;

 

B)        The system's proximity to any possible point source of contamination (including spills or leaks at or near a water treatment facility; at manufacturing, distribution, or storage facilities; from hazardous and municipal waste land fills; or from waste handling or treatment facilities) or non-point source of contamination (including the use of pesticides and other land application uses of the contaminant);

 

C)        The environmental persistence and transport of the contaminant;

 

D)        How well local conditions protect the water source against contamination, including:

 

i)          For a GWS, well depth, soil type, well casing integrity, and wellhead protection; and

 

ii)         For an SWS, watershed protection;

 

E)        For Phase II, Phase IIB, and Phase V SOCs:

 

i)          Elevated nitrate levels at the water source; and

 

ii)         The use of PCBs in equipment the supplier uses to produce, store, and distribute water (including pumps, transformers, etc.); and

 

F)         For Phase I, Phase II, and Phase V VOCs (under Section 611.646), the number of persons the PWS serves, and the proximity of a smaller system to a larger one.

 

b)         If a supplier refuses to provide any necessary additional information the Agency requests, or if a supplier delivers any necessary information late in the Agency's deliberations on a request, the Agency may deny the SEP or issue the SEP with conditions within the time allowed by law.

 

c)         The Agency must issue a SEP allowing a supplier to discontinue monitoring for cyanide upon determining that the supplier's water is not vulnerable to any industrial source of cyanide.

 

BOARD NOTE:  Subsection (a) derives from 40 CFR 141.24(f)(8) and (h)(6).  Subsection (b) derives from 40 CFR 141.82(d)(2), and 141.83(b)(2).  Subsection (c) derives from 40 CFR 141.23(c)(2). At 40 CFR 142.18, USEPA reserves discretion to review and nullify Agency determinations of the kinds made under Sections 611.602, 611.603, 611.646, and 611.648. At 40 CFR 141.82(i), 141.83(b)(7), and 142.19, USEPA maintains authority to establish federal standards for any supplier superseding any Agency determination under Sections 611.352(d), 611.352(f), 611.353(b)(2), and 611.353(b)(4).

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.111  Relief Equivalent to SDWA Section 1415(a) Variances

 

This Section describes how the Board grants relief equivalent to that available from USEPA under section 1415(a)(1)(A) and (a)(1)(B) of SDWA (42 U.S.C. 300g-4(a)(1)(A) and (a)(1)(B)). Every variance under Sections 35 through 38 of the Act must require that the supplier comply within five years.  SDWA section 1415 variances need not do so.  A supplier may seek State regulatory relief equivalent to a SDWA section 1415 variance using one of three procedural mechanisms:  a variance under Sections 35 through 38 of the Act and Subpart B of 35 Ill. Adm. Code 104; a site-specific rule under Sections 27 and 28 of the Act and 35 Ill. Adm. Code 102; or an adjusted standard under Section 28.1 of the Act and Subpart D of 35 Ill. Adm. Code 104.

 

a)         The Board will grant a variance, a site-specific rule, or an adjusted standard from an MCL or a treatment technique under this Section.

 

1)         The supplier must file a petition under the applicable of 35 Ill. Adm. Code 102 or 104.

 

2)         If a State requirement does not have a federal counterpart, the Board needs not follow this Section when granting relief from the State requirements.

 

b)         Relief from an MCL

 

1)         To justify relief from an MCL under this Section, the supplier must demonstrate specific facts:

 

A)        Due to the characteristics of the raw water sources and alternative sources that are reasonably available to the system, the supplier cannot meet the MCL;

 

B)        The supplier installs or will install BAT (as identified in Subpart F), treatment technique, or other means that the Agency finds available.  BAT may vary depending on specific considerations:

 

i)          The number of persons the system serves;

 

ii)         Physical conditions related to engineering feasibility; and

 

iii)        Compliance costs; and

 

C)        The variance will not result in an unreasonable risk to human health.

 

2)         In any order granting relief under this subsection (b), the Board will prescribe schedules:

 

A)        A schedule for complying with each MCL from which the Board granted relief, including increments of progress; and

 

B)        A schedule for the supplier implementing each additional control measure for each MCL from which the Board granted relief during the period ending when the order requires that the supplier comply with the MCL.

 

3)         Schedule of Compliance for Relief from an MCL

 

A)        A schedule of compliance will require the supplier to comply as expeditiously as practicable with each MCL from which the Board granted relief.

 

B)        If the Board prescribes a schedule requiring the supplier to comply with an MCL that is more than five years after when the Board grants the relief, the Board will take certain actions:

 

i)          The Board will document its rationale for the extended compliance schedule;

 

ii)         The Board will discuss its rationale for the extended compliance schedule in the required public notice and opportunity for public hearing; and

 

iii)        The Board will provide the shortest practicable schedule feasible for the supplier to comply with the MCL under the circumstances.

 

c)         Relief from a Treatment Technique Requirement

 

1)         As part of the justification for relief from a treatment technique requirement under this Section, the supplier must demonstrate that the treatment technique is not necessary to protect the health of the persons served due to the nature of the raw water source.

 

2)         The Board may prescribe monitoring and other requirements as a condition for relief from a treatment technique requirement.

 

d)         The Board will hold at least one public hearing.  In addition, the Board will accept comments under 35 Ill. Adm. Code 102 or 104.

 

e)         The Board will not grant relief from certain standards:

 

1)         From the MCLs for total coliforms and E. coli.  The Board can no longer grant relief from the total coliform MCL.

 

BOARD NOTE:  As provided in Section 611.131(c)(1) and 40 CFR 142.304(a), a small system variance is not available for rules that address microbial contaminants, which include Subparts B, R, S, X, Z, and AA.

 

2)         From any treatment technique requirement in Subpart B.

 

3)         From the RDC requirements in Sections 611.241(c) and 611.242(b).

 

f)         The Agency must promptly send USEPA the Board's opinion and order granting relief under this Section.  The Board may reconsider and modify its order granting relief and any conditions if USEPA notifies the Board of a finding under section 1415 of the SDWA (42 U.S.C. 300g-4).

 

g)         In addition to this Section, Section 611.130 or 611.131 may apply to relief the Board grants under this Section.

 

BOARD NOTE:  This Section derives from 40 CFR 141.4, from section 1415(a)(1)(A) and (a)(1)(B) of the SDWA (42 U.S.C. 300g-4(a)(1)(A) and (a)(1)(B)) and from the Guidance Manual for Filtration and Disinfection (91), incorporated by reference in Section 611.102.  USEPA has a procedure at 40 CFR 142.23 to review and potentially modify or nullify state determinations granting relief from NPDWRs if USEPA finds that the state abuses its discretion or fails to prescribe required schedules for compliance in a substantial number of instances.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.112  Relief Equivalent to SDWA Section 1416 Exemptions

 

This Section describes how the Board grants relief equivalent to that available from USEPA under section 1416 of the SDWA (42 U.S.C. 300g-5).  Every variance under Sections 35 through 37 of the Act must require the supplier to comply within five years.  A SDWA section 1416 exemption needs not do so.  A supplier may seek State regulatory relief equivalent to a SDWA section 1416 exemption through one of three procedural mechanisms:  a variance under Sections 35 through 37 of the Act and Subpart B of 35 Ill. Adm. Code 104; a site-specific rule under Sections 27 and 28 of the Act and 35 Ill. Adm. Code 102; or an adjusted standard under Section 28.1 of the Act and Subpart D of 35 Ill. Adm. Code 104.

 

a)         The Board will grant a variance, a site-specific rule, or an adjusted standard from an MCL or treatment technique requirement, or from both, under this Section.

 

1)         The supplier must file a petition under the applicable of 35 Ill. Adm. Code 102 or 104.

 

2)         If a State requirement does not have a federal counterpart, the Board needs not follow this Section when granting relief from the State requirements.

 

b)         As part of the justification for relief under this Section, the supplier must demonstrate specific facts:

 

1)         Due to compelling factors (which may include economic factors), the supplier is unable to comply with the MCL or treatment technique requirement and cannot develop an alternative source of water supply;

 

2)         Either of two situations are true of the supplier:

 

A)        The supplier operated on the effective date of the MCL or treatment technique requirement from which the supplier seeks relief; or

 

B)        The supplier did not operate on the effective date of the MCL or treatment technique requirement from which the supplier seeks relief, and no reasonable alternative source of drinking water is available to the supplier;

 

3)         The relief will not result in an unreasonable risk to human health; and

 

4)         The supplier cannot reasonably make management or restructuring changes that will result in the supplier complying with the NPDWR or improved water quality if the supplier cannot comply.

 

BOARD NOTE:  In determining that the supplier cannot reasonably make management or restructuring changes that will result in the supplier complying with the NPDWR, the Board will consider the factors USEPA requires under 40 CFR 142.20(b)(1), incorporated by reference in Section 611.102(c).

 

c)         In any order granting relief under this Section, the Board will prescribe schedules:

 

1)         A schedule for complying with each MCL from which the Board granted relief, including increments of progress; and

 

2)         A schedule for the supplier implementing each additional control measure for each MCL or treatment technique requirement from which the Board granted relief.

 

d)         Schedule of Compliance. A schedule of compliance must require the supplier to comply as expeditiously as practicable with each MCL or treatment technique requirement from which the Board granted relief but not later than three years after the otherwise applicable compliance date USEPA established under section 1412(b)(10) of SDWA (42 U.S.C. 300g-1(b)(10)), except under limited circumstances:

 

1)         The Board may not grant relief unless the PWS establishes that the supplier is taking all practicable steps to meet the NPDWR; and

 

A)        The supplier cannot meet the NPDWR without capital improvements that the supplier cannot complete within 12 months;

 

B)        In the case of a supplier that needs financial assistance for the necessary improvements, the supplier enters into an agreement to obtain the financial assistance; or

 

C)        The supplier enters into an enforceable agreement to become a part of a regional PWS.

 

2)         In the case of a supplier serving 3,300 or fewer persons that needs financial assistance for the necessary improvements, the Board may renew the relief for one or more additional two-year periods up to a total of six years if the supplier is taking all practicable steps to meet the final date for compliance.

 

3)         A supplier may not receive relief under this Section if the Board granted the supplier relief under Section 611.111 or 611.131.

 

e)         The Board will hold at least one public hearing.  In addition the Board will accept comments under the appropriate of 35 Ill. Adm. Code 102 or 104.

 

f)         The Agency must promptly send USEPA the Board's opinion and order granting relief under this Section. The Board may reconsider and modify its order granting relief and any conditions if USEPA notifies the Board of a finding under section 1416 of the SDWA (42 U.S.C. 300g-5).

 

BOARD NOTE:  This subsection (f) derives from section 1416 of the SDWA (42 U.S.C. 300g-5).

 

g)         The Board will not grant relief from certain standards:

 

1)         From the MCLs for total coliforms and E. coli. The Board can no longer grant relief from the total coliform MCL.

 

BOARD NOTE:  As Section 611.131(c)(1) and 40 CFR 142.304(a) provide, a small system variance is not available for rules that address microbial contaminants, which include Subparts B, R, S, X, Z, and AA.

 

2)         From any treatment technique in Subpart B.

 

3)         From the RDC Sections 611.241(c) and 611.242(b) require.

 

h)         In addition to this Section, Section 611.130 or 611.131 may apply to relief granted under this Section.

 

BOARD NOTE:  This Section derives from 40 CFR 141.4. USEPA has a procedure at 40 CFR 142.23 to review and potentially modify or nullify state determinations granting relief from NPDWRs if USEPA finds that the state abuses its discretion or fails to prescribe required schedules for compliance in a substantial number of instances.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.113  Alternative Treatment Techniques

 

This Section is equivalent to section 1415(a)(3) of SDWA (42 U.S.C. 300g-4(a)(3)).

 

a)         The Board will grant any adjusted standard from a treatment technique requirement under this Section.

 

b)         The supplier seeking an adjusted standard must file a petition under Subpart D of 35 Ill. Adm. Code 104.

 

c)         As justification the supplier must demonstrate that an alternative treatment technique is at least as effective in lowering the level of the contaminant for which a rule prescribes the treatment technique requirement.

 

d)         As a condition of any adjusted standard, the Board will require the use of the alternative treatment technique.

 

e)         The Board will grant an adjusted standard for an alternative treatment technique subject to standard conditions:

 

1)         The adjusted standard must include the applicable limitations in 40 CFR 142, Subpart G, incorporated by reference in Section 611.102; and

 

2)         The adjusted standard must be subject to review and approval by USEPA under 40 CFR 142.46 before it becomes effective.

 

BOARD NOTE:  Subsections (a) through (f) derive from section 1415(a)(3) of SDWA (42 U.S.C. 300g-4(a)(3)).

 

f)         Section 611.130 applies to a determination made under this Section.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.114  Siting Requirements

 

Before entering into a financial commitment for or beginning to construct a new PWS or increasing the capacity of an existing PWS, a supplier must obtain a construction permit under 35 Ill. Adm. Code 602.101 and, to the extent practicable, avoid locating part or all of the new or expanded facility at a site having certain characteristics:

 

a)         The site must not be subject to a significant risk from earthquakes, floods, fires, or other disasters that could cause a breakdown of the PWS or a portion of the PWS.  As used in this subsection, "significant risk" means a greater risk to the new or expanded facility than would exist at other locations within the area the supplier serves; or

 

b)         Except for intake structures, the site must not be within a 100-year floodplain.

 

BOARD NOTE:  This Section derives from 40 CFR 141.5.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.115  Source Water Quantity (Repealed)

 

(Source:  Repealed at 43 Ill. Reg. 8206, effective July 26, 2019)

 

Section 611.120  Effective Dates (Repealed)

 

(Source:  Repealed at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.121  Maximum Contaminant Levels

 

a)         Maximum Contaminant Levels.  No person may cause or allow delivering to any user water that exceeds the MCL for any contaminant.

 

b)         The MCL for any particular contaminant applies in lieu of any narrative finished water quality standard.

 

BOARD NOTE:  This Section derives from the definition of "MCL" in 40 CFR 141.2.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.125  Fluoridation Requirement

 

A CWS adding fluoride to the water must maintain a fluoride ion concentration of 0.7 mg/L as fluorine in its distribution system.

 

BOARD NOTE:  This is an additional State requirement.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.126  Using Lead-Free Pipes, Fittings, Fixtures, Solder, and Flux for Drinking Water

 

a)         Applicability and Scope

 

1)         This Section incorporates federal standards for pipes; pipe or plumbing fittings; or fixtures, solder, and flux, as sections 1417 and 1461 of SDWA (42 U.S.C. 300g-6 and 300j-21) require.  This Section applies to any person introducing these products into commerce, such as a manufacturer, importer, wholesaler, distributor, reseller, or retailer.  This Section also applies to any person using these products when installing or repairing specific facilities:

 

A)        A PWS; or

 

B)        A residential or nonresidential facility providing water for human consumption.

 

2)         This subsection (a)(2) corresponds with 40 CFR 143.10(b), which USEPA marked "reserved".  This statement maintains structural consistency with the corresponding USEPA rules.

 

BOARD NOTE:  Subsection (a) derives from 40 CFR 143.10.

 

b)         Definitions.  The following definitions apply to this Section:

 

"Accredited third-party certification body" means a body the American National Standards Institute (ANSI) accredits to provide product certification for meeting the lead-free requirements of not more than a weighted average of 0.25 percent lead content for the wetted surfaces, consistent with section 1417 of SDWA and subsection (c), such as certification to the NSF/ANSI 372 standard.

 

"Administrator" means the Administrator of USEPA or an authorized representative.

 

"Affiliated" means a person or entity directly controlling, indirectly controlling (through one or more intermediaries), under control of, or under common control with a specific person or entity.  Affiliated persons or entities include any of the following:  a parent company and all wholly or partially owned subsidiaries of the parent company, or two or more corporations or family partnerships having overlap in ownership or control.

 

"Alloy" means a substance composed of two or more metals or of a metal and a nonmetal.

 

"Coating" means a thin layer of material, such as paint, epoxy, zinc galvanization, or other material, usually applied by spraying or in liquid form to coat internal surfaces of pipes, fittings, or fixtures.

 

"Custom fabricated product" means a product:

 

A manufacturer makes on a case-by-case basis to accommodate the unique needs of a single customer;

 

Not having an assigned Universal Product Code (UPC);

 

That no manufacturer, importer, wholesaler, distributor, retailer, or other source stocks or makes available through inventory for distribution; and

 

That no person catalogs in print or on the internet with a specific item number or code.

 

"Drinking water cooler" means any mechanical device that is affixed to drinking water supply plumbing actively cools water for human consumption.

 

"Fitting" means a pipe fitting or plumbing fitting.

 

"Fixture" means a receptacle or device connected to a water supply system or discharging to a drainage system or both.  Fixtures used for potable uses include:

 

Drinking water coolers, drinking water fountains, drinking water bottle fillers, and dishwashers;

 

Plumbed-in devices, such as point-of-use treatment devices, coffee makers, and refrigerator ice and water dispensers; and

 

Water heaters, water meters, water pumps, and water tanks, unless nobody uses them for potable uses.

 

"Flux" means a substance someone uses to help melt or join metals, such as by removing oxides and other coatings or residues from the metals before joining by using solder or other means.

 

"Importer" means any person introducing any pipe, pipe or plumbing fitting or fixture, solder, or flux entering the United States into commerce; any "importer", as defined in 19 CFR 101.1, incorporated by reference in Section 611.102; or both.

 

"Introduce into commerce" or "introduction into commerce" means selling or distributing products or offering products for sale or distribution in the United States.

 

"Liner" means a rigid lining, such as a plastic or copper sleeve, that is:

 

Sealed with a permanent barrier to exclude lead-bearing surfaces from water contact; and

 

Of sufficient thickness and otherwise has physical properties necessary to prevent erosion and cracking for the expected useful life of the product.

 

"Manufacturer" means a person or entity conducting either of certain activities:

 

Processing or making a product; or

 

Having a second person process or make products under a contractual arrangement for distribution, using the first person's or entity's brand name or trademark.

 

"Non-potable services" means all product uses and applications that are not potable uses.

 

"Person" means an individual, corporation, company, association, partnership, municipality, or State or federal agency, including an officer, employee, or agent of a corporation, company, association, municipality, or State or federal agency.

 

"Pipe" means a conduit, conductor, tubing, or hose and may also include permanently attached end fittings.

 

"Pipe fitting" means any piece, such as a coupling, elbow, or gasket, a person uses for connecting pipe lengths or other plumbing pieces together or for changing direction.

 

"Plumbing fitting" means a plumbing component controlling the volume or directional flow of water, such as a kitchen faucet, bathroom lavatory faucet, manifold, or valve.

 

"Point-of-use treatment device" means point-of-use treatment device, as defined in Section 611.102.

 

"Potable uses", for purposes only of this subsection (b), means services or applications providing water for human ingestion, such as drinking, cooking, preparing food, dishwashing, brushing teeth, or maintaining oral hygiene.

 

"Product" means a pipe, fitting, or fixture.

 

"Public water system" or "PWS" is defined in Section 611.101.

 

"Solder" means a type of metal persons use to join metal parts, such as sections of pipe, without melting the existing metal in the joined parts.  Solder usually appears on the market in the form of wire rolls or bars.

 

"State" means the State of Illinois and its authorized agencies.

 

"United States" includes its commonwealths, districts, states, tribes, and territories.

 

"Water distribution main" means a pipe, typically found under or adjacent to a roadway, supplying water to buildings via service lines.

 

BOARD NOTE:  Subsection (b) derives from 40 CFR 143.11.

 

c)         Definition of Lead-Free and Calculation Methodology

 

1)         "Lead-free", for the purposes of this Section, means:

 

A)        Not containing more than 0.2 percent lead, for solder and flux; and

 

B)        Not more than a weighted average of 0.25 percent lead if the wetted surfaces of pipes, pipe fittings, plumbing fittings, and fixtures.

 

2)         Calculate the weighted average lead content of a pipe, pipe fitting, plumbing fitting, or fixture using the following formula:

 

A)        For each wetted component, multiply the percentage of lead in the component by the ratio of the wetted surface area of that component to the total wetted surface area of the entire product to derive the weighted percentage of lead of the component.

 

B)        The sum of the weighted percentage of lead of all wetted components gives the weighted average lead content of the product.

 

C)        Use the lead content of the material used to produce wetted components to determine compliance with subsection (c)(1)(B).

 

D)        For lead content of materials given as a range, use the maximum content of the range.

 

3)         If a coating is applied to the internal surfaces of a pipe, fitting, or fixture component, use the maximum lead content of both the coating and the alloy to calculate the lead content of the component.

 

4)         If a liner is manufactured into a pipe, fitting or fixture, use the maximum lead content of the liner to calculate the lead content of the component.

 

5)         If a fixture contains any media (e.g., activated carbon, ion exchange resin) contained in filters, do not use the media in determining the "total wetted surface area of the entire product" in subsection (c)(2).

 

6)         In addition to the definitions of "lead-free" in subsections (c)(1) through (c)(5), no drinking water cooler containing any solder, flux, or storage tank interior surface that may come into contact with drinking water is lead-free if the solder, flux, or storage tank interior surface contains more than 0.2 percent lead.  The manufacturer must make its drinking water coolers so that each individual part or component that may come in contact with drinking water does not contain more than eight percent lead while still meeting the maximum 0.25 percent weighted average lead content of the wetted surfaces of the entire product.

 

BOARD NOTE:  Subsection (c) derives from 40 CFR 143.12.

 

d)         Use Prohibitions

 

1)         No person may use any pipe, pipe or plumbing fitting or fixture, solder, or flux that is not lead-free in the installation or repair of specific facilities:

 

A)        Any PWS; or

 

B)        Any plumbing in a residential or nonresidential facility providing water for human consumption.

 

2)         Subsection (d)(1) does not apply to leaded joints necessary for the repair of cast iron pipes.

 

BOARD NOTE:  Subsection (d) derives from 40 CFR 143.13.

 

e)         This subsection (e) corresponds with 40 CFR 143.14, requiring authorized states to implement the requirements of section 1417(a)(1) of SDWA (42 U.S.C. 300g-6(a)(1)) and 40 CFR 143.13.  This statement maintains structural consistency with the corresponding USEPA rule.

 

f)         Introduction into Commerce Prohibitions

 

1)         No person may introduce into commerce any pipe, pipe or plumbing fitting or fixture, solder, or flux that is not lead-free, except for a pipe for use in manufacturing or industrial processing;

 

2)         No person engaged in the business of selling plumbing supplies in the United States, except a manufacturer, may sell solder or flux that is not lead-free; and

 

3)         No person may introduce into commerce any solder or flux that is not lead-free, unless the solder or flux bears a prominent label stating that it is illegal to use the solder or flux in the installation or repair of any plumbing providing water for human consumption.

 

BOARD NOTE:  Subsection (f) derives from 40 CFR 143.15.

 

g)         Exemptions.  Subsections (d), (f), and (j) do not apply to certain products:

 

1)         Pipes, pipe fittings, plumbing fittings, or fixtures, including backflow preventers, exclusively for use in non-potable services such as manufacturing, industrial processing, irrigation, outdoor watering, or any other uses in which no person would reasonably anticipate that someone would use the water for human consumption.  Additional products that could be "used exclusively for non-potable services" include:

 

A)        Products clearly labeled, on the product, package, or tag with a phrase like, "Not for use with water for human consumption", or another phrase conveying the same meaning in plain language;

 

B)        Products incapable of use in potable services (e.g., physically incompatible) with other products needed to convey water for potable uses; and

 

C)        Products plainly identifiable and marketed as solely for a use other than conveying water.  These other uses include conveying air, chemicals other than water, hydraulic fluids, refrigerants, gases, or other non-water fluids.

 

2)         Toilets, bidets, urinals, fill valves, flushometer valves, tub fillers, shower valves, fire hydrants, service saddles, and water distribution main gate valves (provided the valves are at least two inches (5.1 cm) in diameter or larger).

 

3)         Clothes washing machines, emergency drench showers, emergency face wash equipment, eyewash devices, fire suppression sprinklers, steam-capable clothes dryers, and sump pumps.

 

BOARD NOTE:  Subsection (g) derives from 40 CFR 143.16.

 

h)         This subsection (h) corresponds with 40 CFR 143.17, which USEPA marked "Reserved".  This statement maintains structural consistency with the corresponding USEPA rule.

 

i)          Required Labeling of Solder and Flux That Is Not Lead-Free.  Solder and flux that is not "lead-free", as defined in subsection (c)(1)(A), must bear a prominent label stating that it is illegal to use the solder or flux in the installation or repair of any plumbing providing water for human consumption.

BOARD NOTE:  Subsection (i) derives from 40 CFR 143.18.

 

j)          Required Certification of Products

 

1)         A manufacturer or importer introducing into commerce products that must meet the lead-free requirements of section 1417 of the Safe Drinking Water Act and subsection (c) must ensure, except as provided in subsections (j)(1)(A) through (j)(1)(C), that the products are certified compliant, as specified in subsections (j)(2) and (j)(3), by September 1, 2023, or before introducing the product into commerce, whichever occurs later.  The manufacturer or importer must maintain documentation substantiating the certification for at least five years after the date the manufacturer or importer last sold the product.

 

A)        Product components of assembled pipes, fittings, or fixtures do not need to be individually certified if the entire product in its final assembled form is lead-free certified.

 

B)        Direct replacement parts for previously installed lead-free certified products do not need to be individually certified if the weighted average lead content of wetted surface area for the part does not exceed the lead content of the original part.

 

C)        Dishwashers do not need to be certified.

 

2)         The manufacturer or importer must obtain certification of its products from an accredited third-party certification body, except as provided in subsection (j)(3).  The manufacturer or importer must keep records for all products an accredited third-party certification body certifies, minimally including documents substantiating certification, certification dates, and expiration dates.  The manufacturer or importer must provide these documents upon request to the Agency or USEPA, as specified in subsection (k)(2).

 

3)         A manufacturer or importer may self-certify its products under subsection (j)(3)(A) or (j)(3)(B).  A manufacturer or importer electing to self-certify its products must comply with subsections (j)(4) through (j)(7).

 

A)        Manufacturers having fewer than ten employees, or importers entering products purchased from or manufactured by manufacturers having fewer than ten employees, may elect to self-certify products in lieu of obtaining certification from an accredited third-party certification body.  The number of employees includes any persons employed by the manufacturer and its affiliated entities.  The number of employees must be calculated by averaging the number of persons that the manufacturer and its affiliated entities employ, regardless of part-time, full-time, or temporary status, for each pay period over the manufacturer's and affiliated entities' latest 12 calendar months or averaged over the number of months in existence if less than 12 months.  Any firm that subsequently expands employment to ten or more employees, based on the most recent 12-month average number of persons employed, is no longer eligible to self-certify products and must obtain third-party certification within 12 months after having ten or more employees.

 

B)        A manufacturer or importer may elect to self-certify any custom-fabricated product in lieu of obtaining certification from an ANSI-accredited third-party certification body, regardless of the number of persons the manufacturer or importer employs.

 

4)         To self-certify products, the eligible manufacturer or importer must attest that its products comply with the definition of "lead-free" in subsection (c) by developing and maintaining a "certificate of conformity".  The certificate of conformity must be:

 

A)        Signed by a responsible corporate officer; general partner; proprietor; or an authorized representative of a responsible corporate officer, general partner, or proprietor; and

 

B)        Posted the certificate to a website with continuing public access in the United States, unless the certificate is being distributed by other means (e.g., electronically or in hard copy) with the product through the distribution channel for final delivery to the end-use installer of the product.

 

5)         The certificate of conformity must be in English and include:

 

A)        Contact information for the manufacturer or importer:

 

i)          The entity's or proprietor's name;

 

ii)         Street and mailing addresses;

 

iii)        Phone number; and

 

iv)        Email address;

 

B)        For products imported into the United States, contact information for the manufacturer;

 

C)        A brief listing of the products, including, when applicable, unique identifying information such as model names and numbers;

 

D)        A statement attesting that the products meet the lead-free requirements of section 1417 of the Safe Drinking Water Act (42 U.S.C. 300g-6) and subpart B of 40 CFR 143 and that the manufacturer or importer is eligible to self-certify the product under that rule;

 

E)        A statement indicating how the manufacturer or importer verified conformance with section 1417 of the Safe Drinking Water Act (42 U.S.C. 300g-6) and subpart B of 40 CFR 143; and

 

F)         The signature, date, name, and position of the signatory and the name and position of the officer, partner, or proprietor who is principal if the signatory certifies as agent on behalf of a responsible corporate officer.

 

6)         A manufacturer or importer self-certifying products must maintain, at a primary place of business within the United States, certificates of conformity and sufficient documentation to confirm that products meet the lead-free requirements of this Section.  Sufficient documentation may include detailed schematic drawings of the products indicating dimensions, records of calculations of the weighted average lead content of the products, documentation of the lead content of materials used in manufacture, and other documentation the manufacturer or importer used in verifying the lead content of a plumbing device.  The manufacturer or importer must provide this documentation and certificates of conformity upon request to the Agency or USEPA, as specified in subsection (k)(2).  The manufacturer or importer must also maintain this documentation and certificates of conformity for at least five years after it last sold the product.

 

7)         The manufacturer or importer must complete the certificate of conformity and documents before introducing a product into commerce.

 

BOARD NOTE:  Subsection (j) derives from 40 CFR 143.19.

 

k)         Compliance Provisions

 

1)         Not complying with the Act or this Section may subject a person to enforcement action.  Enforcement action may include injunctive or declaratory relief, a Board order to cease and desist, civil penalties, or criminal penalties.

 

2)         USEPA or the Agency may, on a case-by-case basis, request any information, such as records it deems necessary to determine whether a person complies with section 1417 of the Safe Drinking Water Act (42 U.S.C. 300g-6); subpart B of 40 CFR 143, incorporated by reference in Section 611.102; and this Section.  The manufacturer or importer must provide requested information to USEPA or the Agency at a time and in a format as reasonably requested by USEPA or the Agency.

 

BOARD NOTE:  Subsection (k) derives from 40 CFR 143.20.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.130  Special Requirements for Certain Variances and Adjusted Standards

 

a)         Relief from the Fluoride MCL

 

1)         When granting any variance or adjusted standard to a CWS supplier from the maximum contaminant level for fluoride in Section 611.301(b), the Board will require the supplier to apply the BAT identified in subsection (a)(4) as a condition to the relief, unless the supplier demonstrates through comprehensive engineering assessments that applying BAT is not technically appropriate and technically feasible for that supplier.

 

2)         If the Board does not require the supplier to apply BAT, the Board will require specific conditions for relief from the fluoride MCL:

 

A)        The supplier must continue investigating certain methods as alternative means of significantly reducing the fluoride level on a definite schedule:

 

i)          Modifying lime softening;

 

ii)         Alum coagulation;

 

iii)        Electrodialysis;

 

iv)        Anion exchange resins;

 

v)         Well-field management;

 

vi)        Using alternative sources of raw water; and

 

vii)       Regionalization; and

 

B)        The supplier must report results of its investigations to the Agency.

 

3)         The Agency must petition the Board to reconsider or modify a variance or adjusted standard under Subpart I of 35 Ill. Adm. Code 101 if the Agency determines that an alternative method the supplier identified under subsection (a)(2) is technically feasible and would result in a significant reduction in fluoride.

 

4)         Two processes are BAT for fluoride:

 

A)        Activated alumina absorption centrally applied; and

 

B)        Reverse osmosis centrally applied.

 

BOARD NOTE:  This subsection derives (a) from 40 CFR 142.61.

 

b)         Relief from an IOC, VOC, or SOC MCL

 

1)         A CWS or NTNCWS must first apply the appropriate BAT for the contaminant before the Board may grant any variance or adjusted standard from the maximum contaminant levels for any VOC or SOC in Section 611.311(a) or (c) or any IOC in Section 611.301, unless the supplier demonstrates through comprehensive engineering assessments that applying BAT would achieve only a minimal and insignificant reduction in the contaminant level.

 

BOARD NOTE:  USEPA lists BAT for each SOC and VOC at 40 CFR 142.62(a) for the purposes of variances and exemptions (adjusted standards).  That list is identical to the list at 40 CFR 141.61(b), which corresponds with Section 611.311(b).

 

2)         The Board may require any of certain conditions in any relief from an MCL in Section 611.301 or 611.311:

 

A)        The supplier must continue investigating alternative means for complying on a definite schedule; and

 

B)        The supplier must report results of its investigation to the Agency.

 

3)         The Agency must petition the Board to reconsider or modify a variance or adjusted standard, under Subpart I of 35 Ill. Adm. Code 101 if the Agency determines that an alternative method the supplier identified under subsection (b)(2) is technically feasible.

 

BOARD NOTE:  This subsection (b) derives from 40 CFR 142.62(a) through (e).

 

c)         Conditions Requiring Use of Bottled Water, a Point-of-Use Treatment Device, or a Point-of-Entry Treatment Device.  When granting any variance or adjusted standard from the MCLs for organic and inorganic chemicals or an adjusted standard from the treatment technique for lead and copper, the Board may impose certain conditions requiring the use of bottled water, a point-of-entry treatment device, or a point-of-use treatment device to avoid an unreasonable risk to human health, limited as subsections (d) and (e) provide.

 

1)         Relief from an MCL.  When granting a variance or adjusted standard from an MCL in Section 611.301 or 611.311, the Board may impose a condition requiring a supplier to use bottled water, a point-of-entry treatment device, a point-of-use treatment device, or other means to avoid an unreasonable risk to human health.

 

2)         Relief from Corrosion Control Treatment.  When granting an adjusted standard from the corrosion control treatment requirements for lead and copper under Sections 611.351 and 611.352, the Board may impose a condition requiring a supplier to use bottled water, a point-of-use treatment device, or other means but not a point-of-entry treatment device to avoid an unreasonable risk to human health.

 

3)         Relief from Source Water Treatment or Replacing Service Lines.  When granting an exemption from the source water treatment and lead service line replacement requirements under Section 611.353 or 611.354, the Board may impose a condition requiring a supplier to use a point-of-entry treatment device to avoid an unreasonable risk to human health.

 

BOARD NOTE:  This subsection (c) derives from 40 CFR 142.62(f).

 

d)         Using Bottled Water.  A supplier proposing to use or using bottled water as a condition for receiving a variance or an adjusted standard from requirements in Section 611.301 or 611.311 or an adjusted standard from requirements in Sections 611.351 through 611.354 must comply with either subsections (d)(1), (d)(2), (d)(3), and (d)(6) or (d)(4), (d)(5), and (d)(6).

 

1)         The supplier must develop a monitoring program for Board approval providing reasonable assurances that the bottled water meets all MCLs in Sections 611.301 and 611.311, and the supplier must describe this program in its petition.  The description must demonstrate how the supplier will comply with this subsection (d).

 

2)         The supplier must monitor representative samples of the bottled water for all contaminants under Sections 611.301 and 611.311 during the first three-month period that it supplies the bottled water to the public, then annually after that.

 

3)         The supplier must annually provide the results of its monitoring to the Agency.

 

4)         The supplier must receive a certification from the bottled water company:

 

A)        That the supplier provides bottled water from an approved source of bottled water, as Section 611.101 defines;

 

B)        That the approved source of bottled water monitors as 21 CFR 129.80(g)(1) through (g)(3) require; and

 

C)        That the bottled water does not exceed any MCLs or quality limits in 21 CFR 110, 129, and 165.110.

 

5)         The supplier must provide the certification subsection (d)(4) requires to the Agency during the first quarter after it begins supplying bottled water then annually after that.

 

6)         The supplier must provide sufficient quantities of bottled water to every affected person the supplier serves via door-to-door bottled water delivery.

 

BOARD NOTE:  This subsection (d) derives from 40 CFR 142.62(g).

 

e)         Using a Point-of-Entry Treatment Device.  Before the Board grants any PWS a variance or adjusted standard from an NPDWR, including a condition requiring use of a point-of-entry treatment device, the supplier must demonstrate certain facts to the Board:

 

1)         That the supplier will operate and maintain the device;

 

2)         That the device protects human health equivalent to central treatment;

 

3)         That the supplier will maintain the microbiological safety of the water at all times;

 

4)         That the supplier has standards for performance, conducted a rigorous engineering design review, and field tested the device;

 

5)         That operating and maintaining the device will account for any potential for increased concentrations of heterotrophic bacteria resulting from using activated carbon by backwashing, post-contactor disinfection, and heterotrophic plate count monitoring;

 

6)         That buildings connected to the supplier's distribution system have sufficient devices properly installed, maintained, and monitored to ensure protecting all consumers; and

 

7)         That using the device will not cause increased corrosion of lead- and copper-bearing materials between the device and tap that could increase contaminant levels at the tap.

 

BOARD NOTE:  This subsection (e) derives from 40 CFR 142.62(h).

 

f)         Relief from the Maximum Contaminant Levels for Radionuclides

 

1)         Relief from the Maximum Contaminant Levels for Combined Radium-226 and Radium-228, Uranium, Gross Alpha Particle Activity (Excluding Radon and Uranium), and Beta Particle and Photon Radioactivity

 

A)        For relief equivalent to a federal section 1415 variance or section 1416 exemption, Section 611.330(g) lists what USEPA identifies as BAT, treatment techniques, or other means for complying with the MCLs for the radionuclides in Section 611.330(b), (c), (d), and (e).

 

B)        For relief equivalent to a federal section 1415 variance or section 1416 exemption for a small system, defined here as one serving 10,000 persons or fewer, Section 611.330(h) lists what USEPA identifies as BAT, treatment techniques, or other means available for complying with the MCLs for the radionuclides listed in Section 611.330(b), (c), (d), and (e), in addition to the technologies in Section 611.330(g) for issuing relief equivalent to a federal section 1415 small system variance or a section 1416 exemption.

 

2)         As a condition for relief equivalent to a federal 1415 variance or section 1416 exemption, the Board will require a CWS supplier to install and use any treatment technology in Section 611.330(g) or 611.330(h) for a  small system serving 10,000 persons or fewer, except as subsection (f)(3) provides otherwise.  If the supplier cannot meet the MCL after installing the treatment technology, the supplier is eligible for relief.

 

3)         If a CWS supplier demonstrates by comprehensive engineering assessments, which may include pilot plant studies, that the treatment technologies identified in this Section would only achieve a de minimis reduction in the contaminant level, the Board may issue a schedule of compliance requiring the system to examine other treatment technologies as a condition of obtaining relief equivalent to a federal section 1415 variance or section 1416 exemption.

 

4)         If the Agency determines that a treatment technology identified under subsection (f)(3) is technically feasible, the Agency may request that the Board require the supplier to install and use that treatment technology on a compliance schedule under Section 36 of the Act.  The Agency must base its determination on the supplier's studies and other relevant information.

 

5)         To avoid unreasonable risk to human health, the Board may require a CWS supplier to use bottled water, point-of-use devices, point-of-entry devices, or other means as a condition of relief equivalent to a federal section 1415 variance or a section 1416 exemption from requirements in Section 611.330.

 

6)         A CWS supplier using bottled water as a condition to relief equivalent to a federal section 1415 variance or a section 1416 exemption from the requirements of Section 611.330 must comply with subsection (d)(6) and either subsections (d)(1) through (d)(3) or (d)(4) and (d)(5).

 

7)         A CWS supplier using point-of-use or point-of-entry devices as a condition to relief equivalent to a federal section 1415 variance or a section 1416 exemption from the radionuclides NPDWRs must meet the conditions in subsections (e)(1) through (e)(6).

 

BOARD NOTE:  This subsection (f) derives from 40 CFR 142.65.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.131  Relief Equivalent to SDWA Section 1415(e) Small System Variance

 

This Section is the State equivalent of SDWA section 1415(e) (42 U.S.C. 300g-4(e)).

 

a)         A PWS serving fewer than 10,000 persons may obtain a variance from an MCL or treatment technique under this Section. The PWS supplier must file a variance petition under Subpart B of 35 Ill. Adm. Code 104, except as this Section provides otherwise.

 

b)         The Board may grant a small system variance to a PWS supplier serving fewer than 3,300 or fewer persons.  The Board may grant a small system variance to a PWS serving more than 3,300 persons but fewer than 10,000 persons subject to USEPA's approval.  In determining the number of persons the PWS serves, the Board will include persons consecutive systems serve.  A small system variance for a PWS also applies to any consecutive system it serves.

 

c)         Availability of a Variance

 

1)         A small system variance is not available under this Section from an NPDWR for a microbial contaminant (including a bacterium, virus, or other organism) or an indicator or treatment technique for a microbial contaminant.

 

2)         A small system variance under this Section is available from certain MCLs or treatment techniques:

 

A)        NPDWRs that USEPA adopted on or after January 1, 1986; and

 

B)        NPDWRs for which USEPA publishes a small system variance technology under section 1412(b)(15) of SDWA (42 U.S.C. 300g-1(b)(15)).

 

BOARD NOTE:  Small system variances are not available above a pre-1986 MCL even if USEPA subsequently revised the MCL.  If the USEPA revises a pre-1986 MCL and makes it more stringent, a variance is available for that contaminant, but only up to the pre-1986 maximum contaminant level.  See subpart B of 40 CFR 141 (1985) for the pre-1986 MCLs and treatment techniques.  See "Variance Technology Findings for Contaminants Regulated Before 1996", USEPA, Office of Water, doc. no. EPA 815-R-98-003 (available online at nepis.epa.gov search "815R98003").

 

d)         No small system variance is effective until after the last applicable event:

 

1)         90 days after the Board grants the small system variance;

 

2)         If USEPA objects to a small system variance for a PWS serving fewer than 3,300 persons, after the Board modifies the variance as USEPA recommended or responds in writing to each USEPA objection; or

 

3)         If the Board grants a small system variance to a PWS serving a population of more than 3,300 but fewer than 10,000 persons, after USEPA approves the small system variance.

 

e)         As part of its showing of arbitrary or unreasonable hardship, the PWS must prove and document certain information to the Board:

 

1)         That the PWS is eligible for a small system variance under subsection (c);

 

2)         That the PWS cannot afford pursue specific alternatives to comply with the NPDWR for which it seeks a small system variance:

 

A)        Treatment;

 

B)        Alternative sources of water supply;

 

C)        Restructuring or consolidation changes, including ownership change or physical consolidation with another PWS; or

 

D)        Obtaining financial assistance under section 1452 of the federal SDWA or any other federal or State program;

 

3)         That the PWS meets the source water quality requirements for installing the small system variance technology developed under guidance that USEPA published under section 1412(b)(15) of SDWA (42 U.S.C. 300g-1(b)(15));

 

BOARD NOTE:  See 71 Fed. Reg. 10671 (Mar. 2, 2006) ("Small Drinking Water Systems Variances − Revision of Existing National-Level Affordability Methodology and Methodology to Identify Variance Technologies That Are Protective of Public Health").

 

4)         That the PWS is financially and technically able to install, operated, and maintain the applicable small system variance technology; and

 

5)         That the terms and conditions of the small system variance ensure adequate protection of human health, considering two factors:

 

A)        The quality of the source water for the PWS; and

 

B)        Removal efficiencies and expected useful life of the small system variance technology.

 

f)         Terms and Conditions

 

1)         The Board will set the terms and conditions for a small system variance under this Section and include specific minimum requirements:

 

A)        The supplier must properly and effectively install, operate, and maintain the applicable small system variance technology that USEPA indicated in published guidance, taking into consideration any relevant source water characteristics and any other site-specific conditions that may affect proper and effective operation and maintenance of the technology;

 

B)        The supplier must monitor for the contaminant from which the Board grants the small system variance; and

 

C)        Any other terms or conditions the Board determines are necessary to adequately protect human health, which may include certain requirements:

 

i)          Public education requirements; and

 

ii)         Source water protection requirements.

 

2)         The Board will establish a schedule for the PWS to comply with the terms and conditions of the small system variance including certain minimum requirements:

 

A)        Increments of progress, such as milestone dates for the PWS to apply for financial assistance and begin capital improvements;

 

B)        Quarterly reporting to the Agency how the PWS complies with the terms and conditions of the small system variance;

 

C)        A schedule for the Agency to review the small system variance; and

 

BOARD NOTE:  Corresponding 40 CFR 142.307(d) provides that the states must review small system variances no less frequently than every five years. 

 

D)        Compliance with the terms and conditions of the small system variance as soon as practicable, but not later than three years after the date the Board granted the small system variance.  The Board may allow up to two additional years upon determining that additional time is necessary for the PWS to accomplish a specific objective:

 

i)          To complete necessary capital improvements to comply with the small system variance technology, secure an alternative source of water, or restructure or consolidate; or

 

ii)         To obtain financial assistance under section 1452 of SDWA (42 U.S.C. 300j-12) or any other federal or State program.

 

g)         The Board will provide notice and opportunity for a public hearing, as Subpart B of 35 Ill. Adm. Code 104 provides, except as this Section provides otherwise.

 

1)         At least 30 days before the public hearing on the proposed small system variance, the PWS must provide notice to all persons the PWS serves. For billed customers, this notice must include the information listed in subsection (g)(2).  For other persons the PWS regularly serves, the notice must provide sufficient information to alert readers to the proposed variance and direct them to where to obtain additional information.  The PWS must provide the notice by specific means:

 

A)        Direct mail or other home delivery to billed customers or other service connections; and

 

B)        Any other method reasonably calculated to notify other persons regularly served by the PWS in a brief and concise manner.  The other method may include publication in a local newspaper, posting in public places, or delivery to community organizations.

 

2)         The notice in subsection (g)(1)(A) must include certain minimum information:

 

A)        Identification of the contaminants for which the PWS seeks a small system variance;

 

B)        A brief statement of the health effects associated with the contaminants for which the PWS seeks a small system variance, using language in Appendix H;

 

C)        The address and telephone number interested persons may use to obtain further information concerning the contaminant and the small system variance;

 

D)        A brief summary of the terms and conditions of the small system variance in easily understandable terms;

 

E)        A description of the consumer petition process under subsection (h) and information on contacting the Agency and USEPA Region 5;

 

F)         A brief statement announcing the public meeting subsection (g)(3) requires, including a statement of the purpose of the meeting, information regarding the time and location for the meeting, and the address and telephone number interested persons may use to obtain further information concerning the meeting; and

 

G)        In communities with a large proportion of non-English-speaking residents, as determined by the Agency, information in the appropriate language regarding the content and importance of the notice.

 

3)         The Board will provide for at least one public hearing on the small system variance.  The PWS must provide notice in the manner required under subsection (g)(1) at least 30 days prior to the public hearing.

 

4)         When granting a small system variance, the Board will issue a written opinion and order responding to all significant public comments received on the variance and stating the Board's reasons for granting the variance.  The Board will make the variance petition, hearings transcripts, public comments received, and all other documents of record concerning the variance available to the public throughout the variance proceeding and after adopting the variance.

 

h)         Any person the PWS serves may petition USEPA to object to a small system variance within 30 days after the Board grants the variance.

 

i)          The Agency must promptly send to USEPA the Board's opinion and order granting the proposed small system variance.  The Board will make recommended modifications, respond in writing to each objection, or reconsider the small system variance if USEPA notifies the Board of a finding under section 1415(e)(8), (e)(9), or (e)(10) of SDWA (42 U.S.C. 300g-4(e)(8), (e)(9), or (e)(10)).

 

j)          Section 611.111, 611.112, or 611.130 may apply to relief granted under this Section.

 

BOARD NOTE:  This Section derives from 40 CFR 142, Subpart K.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.160  Composite Correction Program

 

a)         The Agency may issue a SEP requiring a PWS to conduct a Composite Correction Program (CCP).  The CCP must consist of two elements:  a Comprehensive Performance Evaluation (CPE) and a Comprehensive Technical Assistance (CTA).

 

1)         A CPE is a thorough review and analysis of a plant's performance-based capabilities and associated administrative, operation, and maintenance practices.  The CPE must identify factors that may adversely affect the plant's ability to comply and emphasize approaches the PWS can implement without significant capital improvements.

 

2)         For purposes of compliance with Subparts R and X, the CPE must minimally include specific components:  the CPE must assess plant performance; evaluate major unit processes; identify and prioritize performance-limiting factors; assess the applicability of comprehensive technical assistance; and how the PWS prepared CPE report.

 

BOARD NOTE:  This subsection (a)(2) derives from the third sentence of the definition of "comprehensive performance evaluation" in 40 CFR 141.2.

 

3)         A CTA is the performance-improvement phase the PWS implements if the CPE results indicate potential for improved performance.  During the CTA phase, the PWS must identify and systematically address plant-specific factors.  The CTA is a combination of utilizing CPE results as a basis for followup, implementing process control priority-setting techniques, and maintaining long-term involvement to systematically train staff and administrators.

 

b)         A PWS must implement any follow-up recommendations the Agency makes in writing as a result of the CCP.

 

c)         A PWS may appeal to the Board, under Section 40 of the Act, any Agency requirement that it conduct a CCP or any follow-up recommendations the Agency makes in writing as a result of the CCP, except when a CPE is required under Section 611.745(b)(4).

 

BOARD NOTE:  This Section derives from 40 CFR 142.16(g).

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.161  Case-by-Case Reduced Subpart Y Monitoring for Wholesale and Consecutive Systems

 

The Agency may issue a SEP reducing monitoring under Subpart Y as they apply to a wholesale system or a consecutive system, otherwise than as Section 611.500 provides, subject to limitations:

 

a)         The Agency must consider the certain system-specific factors in making its determination:

 

1)         The amount and percentage of finished water the PWS provides;

 

2)         Whether finished the PWS provides water seasonally, intermittently, or full-time;

 

3)         Improved DBP occurrence information based on IDSE results;

 

4)         Significant changes in the supplier's raw water quality, treatment, or distribution system after completing the IDSE; and

 

5)         Other considerations bearing on DBP occurrence in the supplier's distribution system and the ability of the reduced monitoring to detect DBP in that distribution system.

 

b)         Any reduced monitoring the Agency allows under this Section must require that the PWS maintain a minimum of one compliance monitoring location.

 

c)         The supplier must report any changes in its raw water quality, treatment, or distribution system or any other factors arising after the Agency issues the SEP under this Section that would bear on occurrence of DBP in the supplier's distribution system and the supplier's ability to detect DBP in its distribution system under the reduced monitoring.

 

BOARD NOTE:  This Section derives from 40 CFR 142.16(m) and the preamble discussion at 71 Fed. Reg. 388, 430-31 (Jan. 4, 2006).  USEPA stated that the State may authorize reduced monitoring under a State-devised procedure.  The Board borrowed from USEPA's special primacy requirements for its subpart V:  State 2 Disinfection Byproducts Requirements and the accompanying preamble discussion to derive the procedure in this Section.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.201  Requiring a Demonstration

 

The Agency must issue a SEP notifying a supplier when the Agency requires the supplier to make demonstrations under this Subpart B.  The Agency must require demonstrations when USEPA requires the type of demonstration, allowing sufficient time for the supplier to collect the necessary information.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.202  Procedures for Agency Determinations (Repealed)

 

(Source:  Repealed at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.211  Filtration Required

 

The Agency must require a supplier using a surface water source or groundwater under the direct influence of surface water to filter the water it provides to the public.

 

BOARD NOTE:  This Section originally derived from 40 CFR 141.71 and the preamble discussion at 54 Fed. Reg. 27505 (June 29, 1989). The Board replaced the original rule with the present requirement that a supplier apply filtration treatment because no supplier using a surface water source or groundwater under the direct influence of surface water operates in Illinois.  This rule avoids a gap in the Illinois rules.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.212  Groundwater under Direct Influence of Surface Water

 

The Agency must require a CWS supplier to demonstrate under Section 611.201 whether it uses "groundwater under the direct influence of surface water".  Based on the information the supplier provides, the Agency must determine whether a PWS uses "groundwater under the direct influence of surface water".  The Agency must base this determination on specific factors:

 

a)         Physical Characteristics of the Source.  Whether the source is obviously a surface water source, such as a lake or stream.  Other sources possibly subject to influence from surface waters include springs, infiltration galleries, wells, or other collectors in subsurface aquifers.

 

b)         Well Construction Characteristics and Geology with Field Evaluation

 

1)         The Agency may use the wellhead protection program's requirements, which include delineation of wellhead protection areas, assessment of sources of contamination, and implementation of management control systems, to determine if the wellhead is under the direct influence of surface water.

 

2)         A well less than or equal to 50 feet deep is likely under the direct influence of surface water.

 

3)         A well more than 50 feet deep is likely under the direct influence of surface water, unless it includes specific features:

 

A)        A surface sanitary seal using bentonite clay, concrete, or similar material;

 

B)        A well casing penetrating consolidated (slowly permeable) material; and

 

C)        A well casing that is only perforated or screened below consolidated (slowly permeable) material.

 

4)         A source less than 200 feet from any surface water is likely under the direct influence of surface water.

 

c)         Any structural modifications to prevent the direct influence of surface water and eliminate the potential for Giardia lamblia cyst contamination.

 

d)         Source Water Quality Records.  Specific factors indicate that a source is under the direct influence of surface water:

 

1)         A record of total coliform or fecal coliform contamination in untreated samples collected over the past three years;

 

2)         A history of turbidity problems associated with the source; or

 

3)         A history of known or suspected outbreaks of Giardia lamblia, Cryptosporidium, or other pathogenic organisms associated with surface water attributable to the source.

 

e)         Significant and relatively rapid shifts in water characteristics, such as turbidity, temperature, conductivity, or pH.

 

1)         A variation in turbidity of 0.5 NTU or more over one year is indicative of surface influence.

 

2)         A variation in temperature of nine Fahrenheit degrees or more over one year is indicative of surface influence.

 

f)         Significant and relatively rapid shifts in water characteristics, such as turbidity, temperature, conductivity, or pH, closely correlating with climatological or surface water conditions indicate surface water influence.

 

1)         Evidence of particulate matter associated with the surface water; or

 

2)         Turbidity or temperature data that correlates with that of a nearby surface water source.

 

g)         Particulate Analysis.  Significant occurrence of insects or other macroorganisms, algae, or large-diameter pathogens, such as Giardia lamblia, indicates surface influence.

 

1)         "Large-diameter pathogens" are those over seven micrometers.

 

2)         The supplier must measure particulates as the Guidance Manual for Filtration and Disinfection (91), incorporated by reference in Section 611.102, specifies.

 

h)         The potential for contamination by small-diameter pathogens, such as bacteria or viruses, does not alone render the source "under the direct influence of surface water".

 

BOARD NOTE:  This Section derives from the definition of "groundwater under the direct influence of surface water" in 40 CFR 141.2; from the Preamble at 54 Fed. Reg. 27489 (June 29, 1989); and from the USEPA Guidance Manual for Filtration and Disinfection (91).

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.213  No Method of HPC Analysis

 

Sections 611.241(d)(2), 611.242(c)(2), 611.261(b)(8)(G), 611.262(b)(3)(G), 611.532(f)(2), and 611.533(c)(2) rely on this Section.  The Agency must determine that a system has no means for having a sample analyzed for HPC based on specific site-specific conditions:

 

a)         There is no certified laboratory that can analyze the sample within the time and temperatures the Board Note appended to Section 611.531(a)(2)(A) specifies;

 

b)         The supplier provides adequate disinfection in the distribution system, considering certain factors:

 

1)         Other measurements showing the presence of RDC in the distribution system;

 

2)         The distribution system size; and

 

3)         The adequacy of the supplier's cross connection control program; and

 

c)         The PWS cannot maintain an RDC in its distribution system.

 

BOARD NOTE:  This Section derives from 40 CFR 141.72(a)(4)(ii).

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.220  General Requirements

 

a)         This Subpart B constitutes NPDWRs.  This Subpart B establishes criteria for filtration as a treatment technique for PWSs using a surface water source or groundwater source under the direct influence of surface water.  This Subpart B also establishes treatment techniques in lieu of MCLs for specific contaminants:  Giardia lamblia, viruses, HPC bacteria, Legionella, and turbidity.  A supplier using a surface water source or a groundwater source under the direct influence of surface water must treat that source water and comply with these treatment techniques.  The treatment techniques comprise installing and properly operating water treatment processes that reliably achieve specific objectives:

 

1)         At least 99.9 percent (3-log) removal or inactivation of Giardia lamblia cysts between a point where the raw water is not subject to recontamination by surface water runoff and a downstream point before or at the first customer; and

 

2)         At least 99.99 percent (4-log) removal or inactivation of viruses between a point where the raw water is not subject to recontamination by surface water runoff and a downstream point before or at the first customer.

 

b)         A supplier using a surface water source or a groundwater source under the direct influence of surface water complying with Section 611.250 (filtration) and Section 611.241 (disinfection) complies with subsection (a).

 

c)         A supplier using a surface water source or groundwater source under the direct influence of surface water must have a certified operator under 35 Ill. Adm. Code 603.103 and the Public Water Supply Operations Act [415 ILCS 45].

 

d)         Additional Requirements for PWSs Serving 10,000 or More Persons.  In addition to this Subpart B, a PWS serving 10,000 or more persons must also comply with Subpart R.

 

e)         Additional Requirements for Systems Serving Fewer Than 10,000 People.  In addition to this Subpart B, a supplier serving fewer than 10,000 people must also comply with Subpart X.

 

BOARD NOTE:  This Section derives from 40 CFR 141.70.  The Public Water Supply Operations Act applies only to CWSs, which the Agency regulates.  It does not apply to non-CWSs, which Public Health regulates. Public Health has its own requirements for personnel operating water supplies, e.g., 77 Ill. Adm. Code 900.40(e). The Board removed provisions for unfiltered system suppliers.  A supplier in Illinois using a surface water source or groundwater under the direct influence of surface water must apply filtration treatment and disinfection to water it provides to the public.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.230  Filtration Effective Dates (Repealed)

 

(Source:  Repealed at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.231  Source Water Limitation

 

No CWS may use recycled sewage treatment plant effluent on a routine basis.

 

BOARD NOTE:  This is an additional State requirement.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.232  Site-Specific Conditions (Repealed)

 

(Source:  Repealed at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.233  Treatment Technique Violations

 

A supplier violates a treatment technique requirement if not applying required filtration when the Agency requires in a SEP.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.240  Disinfection

 

a)         This subsection (a) corresponds with the first sentence of 40 CFR 141.72, pertaining to unfiltered system suppliers using a surface water source not providing filtration treatment. These no longer exist in Illinois.  This statement maintains structural consistency with USEPA regulations.

 

b)         This subsection (a) corresponds with the second sentence of 40 CFR 141.72, pertaining to unfiltered system suppliers using groundwater source under the direct influence of surface water not providing filtration treatment. These no longer exist in Illinois.  This statement maintains structural consistency with USEPA regulations.

 

c)         Upon determining that a supplier must apply filtration, the Agency may issue a SEP requiring the supplier to comply with interim disinfection requirements before installing filtration.

 

d)         A supplier using a surface water source and providing filtration treatment must provide the disinfection treatment Section 611.242 specifies.

 

e)         A supplier using a groundwater source under the direct influence of surface water and providing filtration treatment must provide the disinfection treatment Section 611.242 specifies beginning when the supplier installs filtration.

 

f)         Failing to comply with Section 611.242 before the Agency requires in a SEP is a treatment technique violation.

 

BOARD NOTE:  This Section derives from 40 CFR 141.72 preamble.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.241  Unfiltered PWSs (Repealed)

 

(Source:  Repealed at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.242  Filtered PWSs

 

Each supplier providing filtration treatment must provide disinfection treatment:

 

a)         The disinfection treatment must sufficiently ensure that the system's total treatment processes achieve at least 99.9 percent (3-log) inactivation or removal of Giardia lamblia cysts and at least 99.99 percent (4-log) inactivation or removal of viruses.

 

b)         The RDC in the water entering the distribution system, measured as Sections 611.531(b) and 611.533(b) specify, cannot be less than 0.2 mg/L for more than four hours.

 

c)         RDC in the Distribution System

 

1)         The RDC in the distribution system, measured as total chlorine, combined chlorine, or chlorine dioxide, as Sections 611.531(b) and 611.533(c) specify, cannot be undetectable in more than 5 percent of the samples the supplier collects each month for any two consecutive months during which the system serves water to the public.  Water in the distribution system with HPC less than or equal to 500/ml, measured as Section 611.531(a) specifies, is deemed to have a detectable RDC for complying with this requirement.  Thus, the value "V" in this formula cannot exceed 5 percent in one month, for any two consecutive months:

 

where: a	=	The number of times when the supplier measured the RDC;
b	=	The number of times when the supplier did not measure the RDC but did measure HPC;
c	=	The number of times when the supplier measured but did not detect RDC but did not measure HPC;
d	=	The number of times when the supplier measured but did not detect the RDC, and HPC is greater than 500/ml; and
e	=	The number of times when the supplier did not measure the RDC, and HPC is greater than 500/ml.

 

2)         Subsection (c)(1) does not apply if the Agency determines, under Section 611.213, that a supplier has no means for having a sample analyzed for HPC by a certified laboratory under the requisite time and temperature conditions Section 611.531(a) specifies and that the supplier provides adequate disinfection in its distribution system.

 

BOARD NOTE:  This Section derives from 40 CFR 141.72(b).

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.250  Filtration

 

A supplier using a surface water source or a groundwater source under the direct influence of surface water must provide both disinfection treatment, as Section 611.242 specifies, and filtration treatment complying with subsection (a), (b), (c), (d), or (e) within 18 months after the Agency issues a SEP requiring the supplier to apply filtration treatment.  Failing to apply filtration treatment before the time the Agency provides in a SEP violates a treatment technique.

 

a)         Conventional Filtration Treatment or Direct Filtration

 

1)         For a supplier using conventional filtration or direct filtration, the turbidity level of its filtered water must not exceed 0.5 NTU in more than five percent of the measurements each month under Sections 611.531(a) and 611.533(a). However, if the Agency issues a SEP determining that the supplier can achieve at least 99.9 percent removal or inactivation of Giardia lamblia cysts at some turbidity level higher than 0.5 NTU in at least 95 percent of the measurements each month, the Agency must substitute this higher turbidity limit in the SEP. However, the Agency must not approve a turbidity limit allowing more than 1 NTU in more than five percent of the samples each month under Sections 611.531(a) and 611.533(a).

 

2)         The turbidity level of representative samples of a supplier's filtered water must never exceed 5 NTU.

 

3)         A supplier serving 10,000 or more persons must comply with the turbidity in Section 611.743(a).

 

4)         A supplier serving fewer than 10,000 people must comply with the turbidity in Section 611.955.

 

b)         Slow Sand Filtration

 

1)         For a supplier using slow sand filtration, the turbidity level of its filtered water must not exceed 1 NTU in more than five percent of the measurements each month under Section 611.531(a) and 611.533(a). However, if the Agency issues a SEP determining that there is no significant interference with disinfection at a higher level, the Agency must substitute the higher turbidity limit in the SEP.

 

2)         The turbidity of a supplier's filtered water must never exceed 5 NTU, measured as Sections 611.531(a) and 611.533(a) specify.

 

c)         Diatomaceous Earth Filtration

 

1)         For a supplier using diatomaceous earth filtration, the turbidity level of its filtered water must not exceed 1 NTU in more than five percent of the measurements each month under Sections 611.531(a) and 611.533(a).

 

2)         The turbidity level of representative samples of a supplier's filtered water must never exceed 5 NTU under Sections 611.531(a) and 611.533(a).

 

d)         Other Filtration Technologies.  The Agency may issue a SEP allowing a supplier to use a filtration technology not included in subsections (a) through (c) if the supplier demonstrates, using pilot plant studies or other means, that the alternative filtration technology, in combination with disinfection treatment complying with Section 611.242, consistently achieves 99.9 percent removal or inactivation of Giardia lamblia cysts and 99.99 percent removal or inactivation of viruses.  Subsection (b) applies to a supplier making this demonstration. A supplier serving 10,000 or more persons must comply with Section 611.743(b).  A supplier serving fewer than 10,000 people must comply with Section 611.955.

 

BOARD NOTE:  This Section derives from 40 CFR 141.73.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.261  Unfiltered PWSs:  Reporting and Recordkeeping

 

A supplier using a groundwater source under the direct influence of surface water not providing filtration treatment must report monthly to the Agency the information this Section specifies beginning six months after the Agency determines that the groundwater source is under the direct influence of surface water.  When the Agency issues a SEP requiring filtration treatment and specifying appropriate alternative reporting requirements until the supplier applies filtration treatment.

 

a)         The supplier must report source water quality information to the Agency within ten days after the end of each month the supplier serves water to the public. The information must include certain information:

 

1)         The cumulative number of months for which the supplier reports results.

 

2)         The number of fecal or total coliform samples, whichever the supplier analyzed during the month (if a supplier monitors for both, the supplier needs only report fecal coliform samples), the dates the supplied collected the samples, and the dates when the turbidity level exceeded 1 NTU.

 

3)         The number of samples during the month that had equal to or fewer than 20/100 ml fecal coliforms or equal to or fewer than 100/100 ml total coliforms, whichever the supplier analyzed.

 

4)         The cumulative number of fecal or total coliform samples, whichever the supplier analyzed, during the previous six months the supplier served water to the public.

 

5)         The cumulative number of samples that had equal to or fewer than 20/100 ml fecal coliforms or equal to or fewer than 100/100 ml total coliforms, whichever the supplier analyzed, during the previous six months the supplier served water to the public.

 

6)         The percentage of samples that had equal to or fewer than 20/100 ml fecal coliforms or equal to or fewer than 100/100 ml total coliforms, whichever the supplier analyzed, during the previous six months the supplier served water to the public.

 

7)         The maximum turbidity level the supplier measured during the month, the dates of occurrence for any measurements exceeding 5 NTU, and the dates the supplier reported the occurrences to the Agency.

 

8)         For the first 12 months of recordkeeping, the dates and cumulative number of events during which the turbidity exceeded 5 NTU.  After one year of recordkeeping for turbidity measurements, the dates and cumulative number of events during which the turbidity exceeded 5 NTU in the previous 12 months the supplier served water to the public.

 

9)         For the first 120 months of recordkeeping, the dates and cumulative number of events during which the turbidity exceeded 5 NTU.  After ten years of recordkeeping for turbidity measurements, the dates and cumulative number of events during which the turbidity exceeded 5 NTU in the previous 120 months the supplier served water to the public.

 

b)         The supplier must report the Agency disinfection information Section 611.532 specifies within ten days after the end of each month the supplier serves water to the public.  The information the supplier reports must include specific information:

 

1)         For each day, the lowest RDC measurement in mg/L in water entering the distribution system.

 

2)         The date and duration of each period during which the RDC in water entering the distribution system fell below 0.2 mg/L and the supplier notified the Agency of the occurrence.

 

3)         The daily RDCs (in mg/L) and disinfectant contact times (in minutes) the supplier used for calculating the CT values.

 

4)         If the supplier uses chlorine, the daily pH measurements of disinfected water following each point of chlorine disinfection.

 

5)         The daily water temperature measurements (in °C) following each point of disinfection.

 

6)         The daily CT_calc and A_i values for each disinfectant measurement or sequence and the sum of all A_i values (B) before or at the first customer.

 

7)         The daily determination whether disinfection achieves adequate Giardia cyst and virus inactivation, i.e., whether A_i is at least 1.0.  If the supplier uses a disinfectant other than chlorine, the supplier must use other indicator conditions the Agency determines appropriate under Section 611.241(a)(1).

 

8)         Specific information on the supplier's distribution system samples the supplier took for total coliform monitoring under Sections 611.240 through 611.242:

 

A)        The number of times when the supplier measured the RDC;

 

B)        The number of times when the supplier did not measure the RDC but did measure HPC;

 

C)        The number of times the supplier measured but did not detect RDC and measured HPC;

 

D)        The number of times when the supplier measured but did not detect the RDC, and the HPC is greater than 500/ml;

 

E)        The number of times when the supplier did not measure the RDC, and the HPC is greater than 500/ml;

 

F)         For the current and previous month the supplier served water to the public, the value of "V" in the following formula:

 

 

where:

 

a	=	The value in subsection (b)(8)(A);
b	=	The value in subsection (b)(8)(B);
c	=	The value in subsection (b)(8)(C);
d	=	The value in subsection (b)(8)(D); and
e	=	The value in subsection (b)(8)(E).

 

G)        Subsections (b)(8)(A) through (b)(8)(F) do not apply if the Agency determines, under Section 611.213, that a supplier has no means for having a sample analyzed for HPC by a certified laboratory under the requisite time and temperature conditions specified by Section 611.531(a) and that the supplier adequately provides disinfection in the distribution system.

 

9)         A supplier needs not report the data subsections (b)(1) and (b)(3) through (b)(6) require if all data subsections (b)(1) through (b)(8) require remain on file at the system, and the Agency issues a SEP making specific determinations:

 

A)        That the supplier submitted all the information subsections (b)(1) through (b)(8) require to the Agency for at least 12 months; and

 

B)        That the supplier needs not provide filtration treatment.

 

c)         By October 10 of each year, every supplier must provide a report to the Agency summarizing its compliance with all watershed control program requirements in Section 611.232(b).

 

d)         By October 10 of each year, every supplier must provide a report to the Agency on the on-site inspection the supplier conducted during that year under Section 611.232(c), unless the Agency conducted the on-site inspection.  If the Agency conducted the inspection, the Agency must provide a copy of its report to the supplier.

 

e)         Reporting Health Threats

 

1)         Upon discovering that a waterborne disease outbreak occurred that is potentially attributable to its water system, a supplier must report that occurrence to the Agency as soon as possible but no later than by the end of the next business day.

 

2)         If at any time the turbidity exceeds 5 NTU, the supplier must consult with the Agency as soon as practical, but no later than 24 hours after the supplier knows of the exceedance, under Section 611.903(b)(3).

 

3)         If at any time the RDC falls below 0.2 mg/L in the water entering the distribution system, the supplier must notify the Agency as soon as possible but no later than by the end of the next business day.  The supplier must also notify the Agency by the end of the next business day whether or not the supplier restored the RDC to at least 0.2 mg/L within four hours.

 

BOARD NOTE:  This Section derives from 40 CFR 141.75(a).

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.262  Filtered PWSs:  Reporting and Recordkeeping

 

A supplier using a surface water source or a groundwater source under the direct influence of surface water that provides filtration treatment must monthly report specific information to the Agency.

 

a)         The supplier must report turbidity measurements that Section 611.533(a) requires within ten days after the end of each month the supplier serves water to the public.  The report must include specific information:

 

1)         The total number of filtered water turbidity measurements the supplier took during the month.

 

2)         The number and percentage of filtered water turbidity measurements the supplier took during the month that are less than or equal to the turbidity limits Section 611.250 specifies for the filtration technology the supplier uses.

 

3)         The date and value of any turbidity measurements the supplier took during the month that exceed 5 NTU.

 

b)         The supplier must report the disinfection information Section 611.533 specifies to the Agency within ten days after the end of each month the supplier serves water to the public.  The report must include specific information:

 

1)         For each day, the lowest RDC measurement (in mg/L) in water entering the distribution system.

 

2)         The date and duration of each period during which the RDC in water entering the distribution system fell below 0.2 mg/L and when the supplier notified the Agency of the occurrence.

 

3)         Specific information on the samples the supplier took in the distribution system for total coliform monitoring under Sections 611.240 through 611.242:

 

A)        The number of times when the supplier measured the RDC;

 

B)        The number of times when the supplier did not measure the RDC but did measure HPC;

 

C)        The number of times when the supplier measured but did not detect RDC but did not measure HPC;

 

D)        The number of times when the supplier measured but did not detect the RDC, and the HPC is greater than 500/ml;

 

E)        The number of times when the supplier did not measure the RDC, and HPC is greater than 500/ml;

 

F)         For the current and previous month the supplier serves water to the public, the value of "V" in the following formula:

 

 

where:

 

a	=	The value in subsection (b)(3)(A);
b	=	The value in subsection (b)(3)(B);
c	=	The value in subsection (b)(3)(C);
d	=	The value in subsection (b)(3)(D); and
e	=	The value in subsection (b)(3)(E).

 

G)        Subsections (b)(3)(A) through (b)(3)(F) do not apply if the Agency determines, under Section 611.213, that a supplier has no means for having a sample analyzed for HPC by a certified laboratory under the requisite time and temperature conditions specified by Section 611.531(a) and that the supplier adequately provides disinfection in the distribution system.

 

c)         Reporting Health Threats

 

1)         Upon discovering that a waterborne disease outbreak occurred that is potentially attributable to its water system, a supplier must report that occurrence to the Agency as soon as possible but no later than by the end of the next business day.

 

2)         If at any time the turbidity exceeds 5 NTU, the supplier must consult with the Agency as soon as practical, but no later than 24 hours the supplier knows of the exceedance, under Section 611.903(b)(3).

 

3)         If at any time the RDC falls below 0.2 mg/L in the water entering the distribution system, the supplier must notify the Agency as soon as possible, but no later than by the end of the next business day.  The supplier must also notify the Agency by the end of the next business day whether or not the supplier restored the to at least 0.2 mg/L within four hours.

 

BOARD NOTE:  This Section derives from 40 CFR 141.75(b).

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.271  Protection during Repair Work (Repealed)

 

(Source:  Repealed at 43 Ill. Reg. 8206, effective July 26, 2019)

 

Section 611.272  Disinfection Following Repair (Repealed)

 

(Source:  Repealed at 43 Ill. Reg. 8206, effective July 26, 2019)

 

Section 611.276  Recycle Provisions

 

a)         Applicability.  A Subpart B system supplier employing conventional filtration or direct filtration treatment that recycles spent filter backwash water, thickener supernatant, or liquids from dewatering processes must comply with subsections (b) through (d).

 

b)         Reporting.  A supplier must notify the Agency in writing if the supplier recycles spent filter backwash water, thickener supernatant, or liquids from dewatering processes.  This notification must minimally include the information subsections (b)(1) and (b)(2) specify:

 

1)         A plant schematic showing the origin of all recycled flows (including spent filter backwash water, thickener supernatant, and liquids from dewatering processes), the hydraulic conveyance used to transport these fluids, and the location where the supplier reintroduces these fluids back into the treatment plant.

 

2)         The typical recycle flow in gallons per minute (gpm), the highest plant flow the supplier observed in the previous year (gpm), design flow for the treatment plant (gpm), and the Agency-approved operating capacity for the plant if the Agency makes this determination.

 

c)         Treatment Technique Requirement.  Any supplier recycling spent filter backwash water, thickener supernatant, or liquids from dewatering processes must return these flows through the processes of the supplier's existing conventional filtration or direct filtration system, as defined in Section 611.101, or at an alternative location approved by a permit issued by the Agency. 

 

d)         Recordkeeping.  The supplier must collect and retain on file the recycle flow information subsections (d)(1) through (d)(6) specify for review and evaluation by the Agency:

 

1)         A copy of the recycle notification and information the supplier submitted to the Agency under subsection (b).

 

2)         A list of all recycle flows and the frequency with which the supplier returns them.

 

3)         The average and maximum backwash flow rate through the filters and the average and maximum filter backwash process duration in minutes.

 

4)         The typical filter run length and a written summary of how the filter run length is determined.

 

5)         The type of treatment the supplier provides for the recycle flow.

 

6)         Data on the physical dimensions of the equalization or treatment units, typical and maximum hydraulic loading rates, type of treatment chemicals used and average dose and frequency of use, and the frequency at which the supplier removes solids if applicable.

 

BOARD NOTE:  This Section derives from 40 CFR 141.76.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.280  Point-of-Entry Devices

 

a)         A supplier may use point-of-entry devices to comply with an MCL only while complying with this Section.

 

b)         The supplier is responsible to operate and maintain the point-of entry treatment system.

 

c)         The supplier must develop a monitoring plan before installing point-of-entry devices to comply.

 

1)         Point-of-entry devices must protect human health equivalently to central water treatment.  "Equivalently" means that the water would meet all NPDWRs and be of acceptable quality similar to water distributed by a well-operated central treatment plant.

 

2)         In addition to the VOCs, the supplier's monitoring must include physical measurements and observations such as total flow treated and mechanical condition of the treatment equipment.

 

3)         The Agency must approve any use of point-of-entry devices in a SEP.

 

d)         The supplier must properly apply effective technology under an Agency-approved plan, and the supplier must maintain the microbiological safety of the water.

 

1)         The Agency must require adequate performance certification, field testing, and rigorous engineering design review of the point-of-entry devices (if not included in the certification process).

 

2)         The design and application of the point-of-entry devices must consider the tendency for increased heterotrophic bacteria concentrations in water treated with activated carbon.  The Agency may issue a SEP requiring frequent backwashing, post-contactor disinfection, and HPC monitoring to ensure that nothing compromises the microbiological safety of the water.

 

e)         The point-of-entry devices must protect all consumers.  Every building connected to the system must have a point-of-entry device installed, maintained, and adequately monitored. The supplier must assure the Agency that every building is subject to treatment and monitoring, and that the rights and responsibilities of the PWS customer convey with title upon sale of the property.

 

f)         Using any point-of-entry device must not cause increased corrosion of lead- and copper-bearing materials between the device and the tap that could increase contaminant levels at the tap.

 

BOARD NOTE:  This Section derives from 40 CFR 141.100 and 142.62(h)(7).

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.290  Point-of-Use Devices or Bottled Water

 

a)         A supplier may not use bottled water to comply with an MCL.

 

b)         A supplier may use bottled water or point-of-use devices on a temporary basis to avoid an unreasonable risk to human health under an Agency-issued SEP.

 

c)         Any use of bottled water must comply with Section 611.130(d), except that the supplier must submit this quality control plan to the Agency for review as part of its SEP request, rather than to the Board for review.

 

BOARD NOTE:  This Section derives from 40 CFR 141.101.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.295  General Requirements

 

This Subpart D constitutes NPDWRs.  This Subpart D establishes treatment techniques in lieu of MCLs for specified contaminants.

 

BOARD NOTE:  This Section derives from 40 CFR 141.110.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.296  Acrylamide and Epichlorohydrin

 

a)         Each supplier must annually certify in writing to the Agency that when it uses products containing acrylamide or epichlorohydrin in the PWS, the product of monomer level and dose does not exceed the level subsection (b) specifies.  The supplier must compute the product of monomer level and dose:

 

            P =       A × B  

 

      Where:

 

A =      Percent by weight of unreacted monomer in the product used;

 

B =      Parts per million by weight of finished water at which the supplier doses the product; and

 

P =       Product of monomer level and dose.

 

b)         Maximum Product of monomer level and dose:

 

1)         For acrylamide, P = 0.05 ppm; and

 

2)         For epichlorohydrin, P = 0.20 ppm.

 

c)         The supplier's certification may rely on manufacturers or third parties, as the Agency approves.

 

BOARD NOTE:  This Section derives from 40 CFR 141.111.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.297  Corrosion Control (Repealed)

 

(Source:  Repealed at 43 Ill. Reg. 8206, effective July 26, 2019)

 

Section 611.300  State-Only MCLs for Inorganic Chemical Contaminants

 

a)         The State-only MCLs listed in subsection (b) for inorganic chemical contaminants (IOCs) are additional State requirements.  The State-only MCLs apply only to CWS suppliers.  The supplier must determine compliance with the State-only MCLs for inorganic chemicals under Section 611.612.

 

b)         State-only MCLs for IOCs

 

Contaminant	Level, mg/L
Iron	1.0
Manganese	0.15
Zinc	5.

 

c)         This subsection corresponds with 40 CFR 141.11(c), marked as reserved by USEPA.  This statement maintains structural parity with the federal rules.

 

d)         Nitrate

A non-CWS may exceed the MCL for nitrate under certain circumstances:

 

1)         The nitrate level must not exceed 20 mg/L;

 

2)         The water must not be available for consumption by children under six months of age;

 

3)         The NCWS supplier complies with the public notification requirements under Section 611.909, including continuous posting that the nitrate level exceeds 10 mg/L with the potential health effects of exposure;

 

4)         The supplier annually notifies local public health authorities and the Department of Public Health of nitrate levels exceeding 10 mg/L; and

 

5)         No adverse public health effects result.

 

BOARD NOTE:  This subsection (d) derives from 40 CFR 141.11(d).  The Department of Public Health regulations may impose a nitrate limitation requirement at 77 Ill. Adm. Code 900.50.

 

e)         Supplementary conditions apply to the MCLs for iron and manganese in subsection (b):

 

1)         A CWS supplier serving a population of 1,000 or fewer or 300 service connections or fewer are exempt from the standards for iron and manganese.

 

2)         The Agency may issue a SEP allowing iron and manganese in excess of the MCL if sequestration proves effective on an experimental basis.  If sequestration is not effective, the supplier must provide positive iron or manganese reduction treatment, as applicable.  A supplier may try experimental use a sequestering agent only if the Agency approves in a SEP.

 

BOARD NOTE:  This subsection (e) is an additional State requirement.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.301  Revised MCLs for Inorganic Chemical Contaminants

 

a)         This subsection corresponds with 40 CFR 141.62(a), reserved by USEPA. This statement maintains structural consistency with USEPA rules.

 

b)         The MCLs in the following table apply to CWSs.  Except for fluoride, the MCLs also apply to NTNCWSs.  The MCLs for nitrate, nitrite, and total nitrate and nitrite also apply to transient non-CWSs.

 

Contaminant	MCL	Units
Antimony	0.006	mg/L
Arsenic	0.010	mg/L
Asbestos	7	MFL
Barium	2	mg/L
Beryllium	0.004	mg/L
Cadmium	0.005	mg/L
Chromium	0.1	mg/L
Cyanide (as free CN-)	0.2	mg/L
Fluoride	4.0	mg/L
Mercury	0.002	mg/L
Nitrate (as N)	10	mg/L
Nitrite (as N)	1	mg/L
Total Nitrate and Nitrite (as N)	10	mg/L
Selenium	0.05	mg/L
Thallium	0.002	mg/L

 

BOARD NOTE:  See Section 611.300(d) for an elevated nitrate level for non-CWSs. USEPA removed and reserved the MCL for nickel on June 29, 1995, at 60 Fed. Reg. 33932, as a result of a judicial order in Nickel Development Institute v. EPA, No. 92-1407, and Specialty Steel Industry of the U.S. v. Browner, No. 92-1410 (D.C. Cir. Feb. 23 & Mar. 6, 1995), while retaining the contaminant, analytical methodology, and detection limit entries for this contaminant.

 

c)         USEPA identifies specific treatment technologies as BAT for achieving compliance with the IOC MCLs, except for fluoride:

 

Contaminant	BATs
Antimony	C/F RO
Arsenic (BATs for AsV. Pre-oxidation may be required to convert AsIII to AsV.)	AAL
	C/F
	IX
	LIME
	RO
	ED
	O/F (to obtain high removals, the iron to arsenic ratio must be at least 20:1)
Asbestos	C/F
	DDF
	CC
Barium	IX
	LIME
	RO
	ED
Beryllium	AA
	C/F
	IX
	LIME
	RO
Cadmium	C/F
	IX
	LIME
	RO
Chromium	C/F
	IX
	LIME (for CrIII only)
	RO
Cyanide	IX
	RO
	ALK Cl2
Mercury	C/F (only if influent Hg concentrations less than or equal to 10 μg/L)
	GAC
	LIME (only if influent Hg concentrations less than or equal to 10 μg/L)
	RO (only if influent Hg concentrations less than or equal to 10 μg/L)
Nickel	IX
	LIME
	RO
Nitrate	IX
	RO
	ED
Nitrite	IX
	RO
Selenium	AAL
	C/F (for SeIV only)
	LIME
	RO
	ED
Thallium	AAL
	IX

 

Abbreviations
AAL	Activated alumina
ALK Cl2	Alkaline chlorination (pH ≥ 8.5)
C/F	Coagulation/filtration (not BAT for a system having fewer than 500 service connections)
CC	Corrosion control
Cl2	Oxidation (chlorine)
DDF	Direct and diatomite filtration
ED	Electrodialysis
GAC	Granular activated carbon
IX	Ion exchange
LIME	Lime softening
O/F	Oxidation/filtration
RO	Reverse osmosis
UV	Ultraviolet irradiation

 

d)         At 40 CFR 141.62(d), USEPA identified the affordable technology, treatment technique, or other means available to systems serving 10,000 persons or fewer for achieving compliance with the MCL for arsenic:

 

Small System Compliance Technologies (SSCTs)1 for Arsenic2
Small system compliance technology	Affordable for listed small system categories3
Activated alumina (centralized)	All size categories
Activated alumina (point-of-use)4	All size categories
Coagulation/filtration5	501 to 3,300 persons, 3,301 to 10,000 persons
Coagulation-assisted microfiltration	501 to 3,300 persons, 3,301 to 10,000 persons
Electrodialysis reversal6	501 to 3,300 persons, 3,301 to 10,000 persons
Enhanced coagulation/filtration	All size categories
Enhanced lime softening (pH >10.5)	All size categories
Ion exchange	All size categories
Lime softening5	501 to 3,300 persons, 3,301 to 10,000 persons
Oxidation/filtration7	All size categories
Reverse osmosis (centralized)6	501 to 3,300 persons, 3,301 to 10,000 persons
Reverse osmosis (point-of-use)4	All size categories

 

¹     Section 1412(b)(4)(E)(i) through (iii) of SDWA (42 U.S.C. 300g-1(b)(4)(E)(i) through (iii)) specifies that SSCTs must be affordable and technically feasible for a small system supplier.

²     SSCTs for As^V.  Pre-oxidation may be required to convert As^III to As^V.

³     SDWA specifies three categories of small system suppliers: (1) those serving 25 or more, but fewer than 501 persons, (2) those serving more than 500 but fewer than 3,301 persons, and (3) those serving more than 3,300 but fewer than 10,001 persons.  42 U.S.C. 300g-1(b)(4)(E)(ii).

⁴     When a supplier uses POU or POE devices for compliance, the supplier must provide programs to ensure proper long-term operation, maintenance, and monitoring to ensure adequate performance.

⁵     A supplier will not likely install this technology solely for arsenic removal.  This technology may require pH adjustment to optimal range to obtain high removals.

⁶     This technology rejects a large volume of water and may not be appropriate for areas where water quantity is an issue.

⁷     To obtain high removals using this technology, the iron to arsenic ratio must be at least 20:1.

 

BOARD NOTE:  This Section derives from 40 CFR 141.62.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.310  State-Only Maximum Contaminant Levels (MCLs) for Organic Chemical Contaminants

 

The following are State-only MCLs for organic chemical contaminants.  These State-only MCLs apply to all CWSs.  A supplier must calculate compliance with these State-only MCLs in subsections (a) and (b) under Subpart O. 

 

Contaminant	MCL (mg/L)
Aldrin	0.001
DDT	0.05
Dieldrin	0.001
Heptachlor	0.0001
Heptachlor epoxide	0.0001
2,4-D	0.01

 

BOARD NOTE:  This Section originally derived from 40 CFR 141.12 (1992). USEPA removed the last entries from subsections (a) and (b) and marked them reserved at 57 Fed. Reg. 31838 (July 17, 1992).  USEPA entirely removed 40 CFR 141.12 and marked it "reserved" at 71 Fed. Reg. 388 (Jan. 4, 2006).  USEPA's organic chemical MCLs are now at 40 CFR 141.61, which corresponds with Section 611.311.  Different MCLs for heptachlor, heptachlor epoxide, and 2,4-D appear in both this Section and Section 611.311.  The heptachlor, heptachlor epoxide, and 2,4-D MCLs in this Section are Illinois limitations that are more stringent than the federal requirements.  However, detection of these contaminants or violation of the federally-derived revised MCLs in Section 611.311 imposes more stringent monitoring, reporting, and notice requirements.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.311  Revised MCLs for Organic Chemical Contaminants

 

a)         Volatile Organic Chemical Contaminants. The MCLs for VOCs apply to CWS suppliers and NTNCWS suppliers: 

 

CAS No.	Contaminant	MCL (mg/L)
71-43-2	Benzene	0.005
56-23-5	Carbon tetrachloride	0.005
95-50-1	o-Dichlorobenzene	0.6
106-46-7	p-Dichlorobenzene	0.075
107-06-2	1,2-Dichloroethane	0.005
75-35-4	1,1-Dichloroethylene	0.007
156-59-2	cis-1,2-Dichloroethylene	0.07
156-60-5	trans-1,2-Dichloroethylene	0.1
75-09-2	Dichloromethane (methylene chloride)	0.005
78-87-5	1,2-Dichloropropane	0.005
100-41-4	Ethylbenzene	0.7
108-90-7	Monochlorobenzene	0.1
100-42-5	Styrene	0.1
127-18-4	Tetrachloroethylene	0.005
108-88-3	Toluene	1
120-82-1	1,2,4-Trichlorobenzene	0.07
71-55-6	1,1,1-Trichloroethane	0.2
79-00-5	1,1,2-Trichloroethane	0.005
79-01-6	Trichloroethylene	0.005
75-01-4	Vinyl chloride	0.002
1330-20-7	Xylenes (total)	10

 

b)         USEPA identifies granular activated carbon (GAC), packed tower aeration (PTA), or oxidation (OX) as BAT for achieving compliance with the MCLs for VOCs and SOCs in subsections (a) and (c), as indicated:

 

CAS No.	Contaminant	MCL (mg/L)
15972-60-8	Alachlor	GAC
116-06-3	Aldicarb*	GAC
1646-87-4	Aldicarb sulfone*	GAC
1646-87-3	Aldicarb sulfoxide*	GAC
1912-24-9	Atrazine	GAC
71-43-2	Benzene	GAC, PTA
50-32-8	Benzo(a)pyrene	GAC
1563-66-2	Carbofuran	GAC
56-23-5	Carbon tetrachloride	GAC, PTA
57-74-9	Chlordane	GAC
94-75-7	2,4-D	GAC
75-99-0	Dalapon	GAC
96-12-8	Dibromochloropropane	GAC, PTA
95-50-1	o-Dichlorobenzene	GAC, PTA
106-46-7	p-Dichlorobenzene	GAC, PTA
107-06-2	1,2-Dichloroethane	GAC, PTA
156-59-2	cis-1,2-Dichloroethylene	GAC, PTA
156-60-5	trans-1,2-Dichoroethylene	GAC, PTA
75-35-4	1,1-Dichloroethylene	GAC, PTA
75-09-2	Dichloromethane	PTA
78-87-5	1,2-Dichloropropane	GAC, PTA
103-23-1	Di(2-ethylhexyl)adipate	GAC, PTA
117-81-7	Di(2-ethylhexyl)phthalate	GAC
88-85-7	Dinoseb	GAC
85-00-7	Diquat	GAC
145-73-3	Endothall	GAC
72-20-8	Endrin	GAC
106-93-4	Ethylene dibromide (EDB)	GAC, PTA
100-41-4	Ethylbenzene	GAC, PTA
1071-53-6	Glyphosate	OX
76-44-8	Heptachlor	GAC
1024-57-3	Heptachlor epoxide	GAC
118-74-1	Hexachlorobenzene	GAC
77-47-3	Hexachlorocyclopentadiene	GAC, PTA
58-89-9	Lindane	GAC
72-43-5	Methoxychlor	GAC
108-90-7	Monochlorobenzene	GAC, PTA
23135-22-0	Oxamyl	GAC
87-86-5	Pentachlorophenol	GAC
1918-02-1	Picloram	GAC
1336-36-3	Polychlorinated biphenyls (PCB)	GAC
122-34-9	Simazine	GAC
100-42-5	Styrene	GAC, PTA
1746-01-6	2,3,7,8-TCDD	GAC
127-18-4	Tetrachloroethylene	GAC, PTA
108-88-3	Toluene	GAC
8001-35-2	Toxaphene	GAC
120-82-1	1,2,4-trichlorobenzene	GAC, PTA
71-55-6	1,1,1-Trichloroethane	GAC, PTA
79-00-5	1,1,2-trichloroethane	GAC, PTA
79-01-6	Trichloroethylene	GAC, PTA
93-72-1	2,4,5-TP	GAC
75-01-4	Vinyl chloride	PTA
1330-20-7	Xylene	GAC, PTA

 

*See the Board note at the end of this Section.

 

c)         Synthetic Organic Chemical Contaminants.  MCLs for SOCs apply to CWS and NTNCWS suppliers:

 

CAS Number	Contaminant	MCL (mg/L)
15972-60-8	Alachlor	0.002
116-06-3	Aldicarb*	0.002
1646-87-4	Aldicarb sulfone*	0.002
1646-87-3	Aldicarb sulfoxide*	0.004
1912-24-9	Atrazine	0.003
50-32-8	Benzo(a)pyrene	0.0002
1563-66-2	Carbofuran	0.04
57-74-9	Chlordane	0.002
94-75-7	2,4-D	0.07
75-99-0	Dalapon	0.2
96-12-8	Dibromochloropropane	0.0002
103-23-1	Di(2-ethylhexyl)adipate	0.4
117-81-7	Di(2-ethylhexyl)phthalate	0.006
88-85-7	Dinoseb	0.007
85-00-7	Diquat	0.02
145-73-3	Endothall	0.1
72-20-8	Endrin	0.002
106-93-4	Ethylene dibromide	0.00005
1071-53-6	Glyphosate	0.7
76-44-8	Heptachlor	0.0004
1024-57-3	Heptachlor epoxide	0.0002
118-74-1	Hexachlorobenzene	0.001
77-47-4	Hexachlorocyclopentadiene	0.05
58-89-9	Lindane	0.0002
72-43-5	Methoxychlor	0.04
23135-22-0	Oxamyl (Vydate)	0.2
87-86-5	Pentachlorophenol	0.001
1918-02-1	Picloram	0.5
1336-36-3	Polychlorinated biphenyls (PCBs)	0.0005
122-34-9	Simazine	0.004
1746-01-6	2,3,7,8-TCDD (Dioxin)	0.00000003
8001-35-2	Toxaphene	0.003
93-72-1	2,4,5-TP	0.05

 

* See the Board note at the end of this Section.

 

BOARD NOTE:  This Section derives from 40 CFR 141.61.  More stringent state MCLs for 2,4-D, heptachlor, and heptachlor epoxide appear at Section 611.310.  In 40 CFR 141.6(g), USEPA postponed the effectiveness of the MCLs for aldicarb, aldicarb sulfone, and aldicarb sulfoxide until it took further action on those MCLs. See 40 CFR 141.6(g) and 57 Fed. Reg. 22178 (May 27, 1992).  USEPA later stated that it anticipated taking no action until 2005 on a federal national primary drinking water regulation (NPDWR) applicable to the aldicarbs. 68 Fed. Reg. 31108 (May 27, 2003).  In 2005, USEPA indicated no projected date for final action on the aldicarbs. See 70 Fed. Reg. 27501, 671 (May 16, 2005). An entry for the aldicarbs last appeared in USEPA's Spring 2007 semiannual regulatory agenda, indicating no projected dates for further action.  See 72 Fed. Reg. 23156, 97 (Apr. 30, 2007); see also 72 Fed. Reg. 70118, 23 (Dec. 10, 2007) (the first USEPA regulatory agenda that included no entry for the aldicarbs).  As of early 2022, USEPA did not include the aldicarbs among the NPDWRs on its webpage.  USEPA, Ground Water and Drinking Water, National Primary Drinking Water Regulations (www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations; accessed February 16, 2022).  While the Board must maintain entries for aldicarb, aldicarb sulfoxide, and aldicarb sulfone to maintain consistency with the literal text of the federal rules (see Sections 7.2 and 17.5 of the Act; 42 U.S.C. 300g-2; 40 CFR 142.10), the Board intends that no aldicarb requirements apply in Illinois until after USEPA adopts such requirements, and the Board removes this statement.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.312  Maximum Contaminant Levels (MCLs) for Disinfection Byproducts (DBPs)

 

a)         Bromate and Chlorite.  MCLs for bromate and chlorite apply to CWS and NTNCWS suppliers:

 

Disinfection Byproduct	MCL (mg/L)
Bromate	0.010
Chlorite	1.0

 

1)         A Subpart B system supplier must comply with this subsection (a).

 

2)         USEPA identifies best available technology, treatment techniques, or other means available for achieving compliance with the MCLs for bromate and chlorite:

 

Disinfection Byproduct	Best Available Technology
Bromate	Controlling the ozone treatment process to reduce bromate production.
Chlorite	Controlling the treatment processes to reduce disinfectant demand and controlling the disinfection treatment processes to reduce disinfectant levels.

 

b)         TTHM and HAA5

 

1)         A supplier must comply with the Subpart Y MCLs for TTHM and HAA5 as a locational running annual average at each monitoring location, as Section 611.970(c) requires.

 

Disinfection Byproduct	MCL (mg/L)
Total trihalomethanes (TTHM)	0.080
Haloacetic acids (five) (HAA5)	0.060

 

2)         USEPA identifies the best available technology, treatment techniques, or other means available for complying with the MCLs for TTHM and HAA5 for any supplier disinfecting its source water:

 

Disinfection Byproduct	Best Available Technology
Total trihalomethanes (TTHM) and Haloacetic acids (five) (HAA5)	Enhanced coagulation or enhanced softening, plus GAC10; or nanofiltration with a molecular weight cutoff ≤ 1000 Daltons; or GAC20

 

3)         USEPA identifies the best available technology, treatment techniques, or other means available for achieving compliance with the MCLs TTHM and HAA5 for consecutive systems, which only apply to the disinfected water that a consecutive system buys or otherwise receives from a wholesale system:

 

Disinfection Byproduct	Best Available Technology
Total trihalomethanes (TTHM) and Haloacetic acids (five) (HAA5)	Any system serving 10,000 or more persons:  Improved distribution system and storage tank management to reduce residence time, plus using chloramines for disinfectant residual maintenance; or Any system serving fewer than 10,000 persons:  Improved distribution system and storage tank management to reduce residence time.

 

BOARD NOTE:  This Section derives from 40 CFR 141.64.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.313  Maximum Residual Disinfectant Levels (MRDLs)

 

a)         MRDLs:

 

Disinfectant residual	MRDL (mg/L)
Chlorine	4.0 (as Cl2)
Chloramines	4.0 (as Cl2)
Chlorine dioxide	0.8 (as ClO2)

 

b)         Compliance

 

1)         CWSs and NTNCWSs.  A Subpart B system must comply with this Section.

 

2)         Transient NCWSs.  A Subpart B system supplier must comply with the chlorine dioxide MRDL.

 

c)         USEPA identified the best technology, treatment techniques, or other means available for complying with the MRDLs in subsection (a):  controlling treatment processes to reduce disinfectant demand and controlling disinfection treatment processes to reduce disinfectant levels.

 

BOARD NOTE:  This Section derives from 40 CFR 141.65.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.320  Turbidity (Repealed)

 

(Source:  Repealed at 27 Ill. Reg. 16447, effective October 10, 2003)

 

Section 611.325  Microbiological Contaminants

 

a)         A supplier complies with the MCL for E. coli for samples taken under Subpart AA, unless any of the conditions identified in subsections (a)(1) through (a)(4) occur.  For purposes of public notification under Subpart V, violating the MCL may pose an acute risk to human health.

 

1)         The supplier has an E. coli-positive repeat sample following a total coliform-positive routine sample.

 

2)         The supplier has a total coliform-positive repeat sample following an E. coli-positive routine sample.

 

3)         The supplier fails to take all required repeat samples following an E. coli-positive routine sample.

 

4)         The supplier fails to test for E. coli when any repeat sample tests positive for total coliform.

 

b)         A supplier must determine whether it complies with the MCL for E. coli in subsection (a) for each month during which the supplier must monitor for total coliforms.

 

c)         USEPA identified the best technology, treatment techniques, or other means for complying with the MCL maximum contaminant level for E. coli in subsection (a):

 

1)         Protecting wells from fecal contamination by appropriate placement and construction;

 

2)         Maintaining RDC throughout the distribution system;

 

3)         Properly maintaining the distribution system, including appropriate pipe replacement and repair procedures, main flushing programs, properly operating and maintaining storage tanks and reservoirs, cross-connection control, and continually maintaining positive water pressure in all parts of the distribution system;

 

4)         Filtering and disinfecting surface water, as Subparts B, R, X, and Z describe, or disinfecting groundwater, as Subpart S describes, using a strong oxidant like chlorine, chlorine dioxide, or ozone; or

 

5)         For a system using groundwater, complying with permit conditions the Agency imposes under the USEPA-endorsed Illinois wellhead protection program.

 

BOARD NOTE:  USEPA requires the supplier to comply with the wellhead protection program.  The Illinois program operates under the Illinois Groundwater Protection Act [415 ILCS 55].  USEPA endorses, rather than approves, state groundwater protection programs and periodically reviews those programs with the state.  See “Final Comprehensive State Ground Water Protection Program Guidance”, USEPA, Office of the Administrator, doc. no. EPA 100-R-93-001 (Dec. 1992), at p. 1-21 & n. 4 and pp. 1-24 and 1-25.  Section 18(a) of the Act requires a supplier to operate under an Agency-issued permit.  Other Illinois laws may require a permit for a groundwater well.  E.g., Sections 5(b), 5b, and 6 of the Illinois Water Well Construction Code [415 ILCS 30/5(b), 5b, and 6].

 

d)         USEPA identifies the technology, treatment techniques, or other means in subsection (c) as affordable technology, treatment techniques, or other means available to suppliers serving 10,000 or fewer people for achieving compliance with the for E. coli MCL in subsection (a).

 

BOARD NOTE:  This subsection (a) derives from 40 CFR 141.63(c), subsection (b) derives from the second sentence of 40 CFR 141.63(d), and subsection (c) derives from 40 CFR 141.63(e).  The Board omits 40 CFR 141(a) and (b) and the first sentence of 40 CFR 141.63(d), which expired by their own terms March 31, 2016.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.330  Maximum Contaminant Levels for Radionuclides

 

a)         This subsection (a) corresponds with 40 CFR 141.66(a), marked reserved by USEPA.  This statement maintains structural consistency with USEPA rules.

 

b)         MCL for Combined Radium-226 and -228.  The MCL for combined radium-226 and radium-228 is 5 pCi/L.  Determine the combined radium-226 and radium-228 value by adding the results of analyses for radium-226 and radium-228.

 

c)         MCL for Gross Alpha Particle Activity (Excluding Radon and Uranium).  The MCL for gross alpha particle activity (including radium-226 but excluding radon and uranium) is 15 pCi/L.

 

d)         MCL for Beta Particle and Photon Radioactivity

 

1)         The average annual concentration of beta particle and photon radioactivity from man-made radionuclides in drinking water must not produce an annual dose equivalent to the total body or any internal organ greater than 4 millirem/year (mrem/year).

 

2)         Except for the radionuclides in this subsection (d)(2), the supplier must calculate the concentration of man-made radionuclides causing 4 mrem total body or organ dose equivalents on the basis of two liters per day drinking water intake using the 168-hour data list in NBS Handbook 69 (63), incorporated by reference in Section 611.102.  If two or more radionuclides are present, the sum of their annual dose equivalent to the total body or to any organ must not exceed 4 mrem/year.

 

Average Annual Concentrations Assumed to Produce a Total Body or Organ Dose of 4 mrem/yr
Radionuclide		Critical organ	pCi per liter
1.	Tritium	Total body	20,000
2.	Strontium-90	Bone marrow	8

 

BOARD NOTE:  USEPA listed factors for computing the fraction of the maximum permissible annual dose of 4 mrem/yr based on NBS Handbook 69 (63) in Appendix I (Comparison of Derived Values of Beta and Photon Emitters), Implementation Guidance for Radionuclides, EPA 816-F-00-002.  The units for these factors allow direct use for computing fractional dose equivalents.  The Board listed USEPA’s conversion factors in Table R, including information about applying the factors to determine compliance.

 

e)         MCL for Uranium.  The MCL for uranium is 30 μg/L.

 

f)         Combined Radium-226 and -228, Gross Alpha Particle Activity, Gross Beta Particle and Photon Radioactivity, and Uranium.  A CWS supplier must comply with the MCLs listed in subsections (b) through (e), determining compliance as Subpart Q provides. 

 

g)         Best Available Technologies (BATs) for Radionuclides.  USEPA identifies the BAT for complying with the MCLs for combined radium-226 and -228, uranium, gross alpha particle activity, and beta particle and photon radioactivity:

 

BAT for Combined Radium-226 and Radium-228, Uranium, Gross Alpha Particle Activity, and Beta Particle and Photon Radioactivity
Contaminant		BAT
	Combined radium-226 and radium-228	Ion exchange, reverse osmosis, lime softening
	Uranium	Ion exchange, reverse osmosis, lime softening, coagulation/ filtration
	Gross alpha particle activity (excluding radon and uranium)	Reverse osmosis
	Beta particle and photon radioactivity	Ion exchange, reverse osmosis

 

h)         Small Systems Compliance Technologies List for Radionuclides.  USEPA identified BAT as affordable technology, treatment techniques, or other means available to suppliers serving 10,000 or fewer people for achieving compliance with the radionuclides MCLs in subsections (a) through (e).

 

List of Small Systems Compliance Technologies for Radionuclides and Limitations to Use
Unit technologies		Limitations (see footnotes)	Operator skill level required1	Raw water quality range and considerations1
1.	Ion exchange (IE)	(a)	Intermediate	All ground waters
2.	Point of use (POU2) IE	(b)	Basic	All ground waters
3.	Reverse osmosis (RO)	(c)	Advanced	Surface waters usually require pre-filtration
4.	POU2 RO	(b)	Basic	Surface waters usually require pre-filtration
5.	Lime softening	(d)	Advanced	All waters
6.	Green sand filtration	(e)	Basic
7.	Co-precipitation with Barium sulfate	(f)	Intermediate to advanced	Ground waters with suitable water quality
8.	Electrodialysis/ electrodialysis reversal		Basic to intermediate	All ground waters
9.	Pre-formed hydrous Manganese oxide filtration	(g)	Intermediate	All ground waters
10.	Activated alumina	(a), (h)	Advanced	All ground waters; competing anion concentrations may affect regeneration frequency
11.	Enhanced coagulation/ filtration	(i)	Advanced	Can treat a wide range of water qualities
1	National Research Council (NRC).  "Safe Water from Every Tap:  Improving Water Service to Small Communities", National Academy Press, Washington, D.C. 1997.
2	A POU, or "point-of-use" technology is a treatment device at a single consumer's tap for reducing contaminants in drinking water at that tap. POU devices are typically on a kitchen tap. BOARD NOTE: USEPA refers to the notice of data availability (NODA) at 66 Fed. Reg. 21576 (April 21, 2000) for details.

 

Limitations Footnotes:  Technologies for Radionuclides

 

(a)        The regeneration solution contains high concentrations of the contaminant ions.  A supplier should carefully consider disposal options before choosing this technology.

 

(b)        When a supplier uses POU devices to comply, the supplier must provide programs for long-term operation, maintenance, and monitoring to ensure proper performance.

 

(c)        The supplier should carefully consider reject water disposal options before choosing this technology.

 

BOARD NOTE:  In corresponding 40 CFR 141.66, Table C, footnote c states in part:  "See other RO limitations described in the SWTR Compliance Technologies Table."  USEPA based Table C on "Table 13. − Technologies for Radionuclides" appearing at 63 Fed. Reg. 42032, 42043 (Aug. 6, 1998). Table 13 refers to "Table 2. − SWTR Compliance Technology Table:  Filtration".  That Table 2, at 63 Fed. Reg. at 42036, lists the limitations on RO:

 

^d    Blending (combining treated water with untreated raw water) cannot be practiced at risk of increasing microbial concentrations in finished water.

 

^e     Post-disinfection recommended as a safety measure and for residual maintenance.

 

^f     Post-treatment corrosion control will be needed prior to distribution.

 

(d)       The combination of variable source water quality and the complexity of the water chemistry involved may make this technology too complex for a small surface water system.

 

(e)        Removal efficiencies can vary depending on water quality.

 

(f)        This technology may be very limited in application to small systems. Since the process requires static mixing, detention basins, and filtration, it is most applicable to systems with sufficiently high sulfate levels that already have a suitable filtration treatment train in place.

 

(g)        This technology is most applicable to small systems that already have filtration in place.

 

(h)        Handling chemicals required during regeneration and pH adjustment may be too difficult for small systems without an adequately trained operator.

 

(i)         Assumes modification of a coagulation/filtration process already in place.

 

Compliance Technologies by System Size Category  for Radionuclide NPDWRs
		Compliance Technologies for System Size Categories (Population Served)
Contaminant		25-500	501-3,300	3,300-10,000
1.	Combined radium-226 and radium-228	1, 2, 3, 4, 5, 6, 7, 8, 9	1, 2, 3, 4, 5, 6, 7, 8, 9	1, 2, 3, 4, 5, 6, 7, 8, 9
2.	Gross alpha particle activity	3, 4	3, 4	3, 4
3.	Beta particle activity and photon activity	1, 2, 3, 4	1, 2, 3, 4	1, 2, 3, 4
4.	Uranium	1, 2, 4, 10, 11	1, 2, 3, 4, 5, 10, 11	1, 2, 3, 4, 5, 10, 11

 

Note:  Numbers correspond to the numbered technologies in the above table, "List of Small Systems Compliance Technologies for Radionuclides and Limitations to Use".

 

BOARD NOTE:  This Section derives from 40 CFR 141.66.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.331  Beta Particle and Photon Radioactivity (Repealed)

 

(Source:  Repealed at 28 Ill. Reg. 5269, effective March 10, 2004)

 

Section 611.350  General Requirements

 

a)         Applicability and Scope

 

1)         Applicability of and Compliance with this Subpart G.  This Subpart G and Subpart AG constitute NPDWRs for lead and copper.  This Subpart G and Subpart AG apply to all community water systems (CWSs) and non-transient, non-community water systems (NTNCWSs).

 

A)        A supplier must comply with this Subpart G by October 16, 2024, except as otherwise required by Section 611.351, 611.354, 611.355, 611.356, or 611.360.

 

B)        If the Agency issued a SEP before December 16, 2021, that expires on or after October 16, 2024, and the SEP exempts a supplier under any rule in former Subpart G (now redesignated Subpart AG), the supplier must comply with this Subpart G after the SEP expires, regardless of subsection (a)(1)(A).  If the SEP expires before October 16, 2024, the supplier must comply with this Subpart G as required by subsection (a)(1)(A).

 

C)        The Agency may issue a SEP requiring a supplier to comply with specified rules in this Subpart G before subsection (a)(1)(A) or (a)(1)(B) otherwise requires or as necessary to address issues in a notice the Agency received from USEPA under 40 CFR 142.23 or 142.30.  The SEP must specify the rules in this Subpart G with which the supplier must comply and their counterparts in Subpart AG with which the supplier no longer needs to comply.  The supplier must comply with the SEP-specified Subpart G rules in lieu of their counterparts in Subpart AG.

 

BOARD NOTE:  This subsection (a)(1) derives from 40 CFR 141.80(a).  USEPA’s Lead and Copper Rules Revisions (LCRR) apply to all suppliers on December 16, 2021.  However, USEPA delays complying with LCRR until October 16, 2024, when any previously granted exemption expires, or as provided otherwise by any of several specified rules for corrosion control treatment; lead service line replacement; public education, supplemental monitoring, and mitigation; monitoring; and reporting (corresponding with 35 Ill. Adm. Code 611.351, 622.354, 611.355, 611.356, or 611.360).  Until a supplier must comply with the LCRR, USEPA requires the supplier to comply with subpart I of 40 CFR 141 (2020).  This requires the Board to codify two versions of the Lead and Copper Rule:  one in Subpart AG, representing the Lead and Copper Rules prior to the LCRR (40 CFR 141 (2020)), and the other in this Subpart G, representing 40 CFR 141 incorporating the LCRR.

 

2)         Scope.  This Subpart G establishes a treatment technique including requirements for corrosion control treatment, source water treatment, lead service line inventory, replacing lead service lines, public notice, monitoring for lead in schools and child care facilities, and public education.  Lead and copper action levels and the lead trigger level in samples collected at consumers' taps prompt these requirements.  The rules in this Subpart G requiring lead sampling in schools and child care facilities and public education apply to all CWS.

 

b)         Definitions.  For this Subpart G only, this subsection (b) defines certain terms:

 

"Action level" means the computed concentration of lead or copper in water under subsection (c) determining applicability of some treatment requirements under this Subpart G.  The action level for lead is 0.015 mg/L, and the action level for copper is 1.3 mg/L.

 

"Aerator" means the device embedded in a water faucet to enhance air flow in the water stream and prevent splashing.

 

"Child care facility" means a facility providing child care, day care, or early learning services to children under a license issued by a State or local agency.

BOARD NOTE:  See, e.g., the Child Care Act of 1969 [225 ILCS 10].

 

"Corrosion inhibitor" means a substance that can reduce corrosivity of water toward metal plumbing materials, especially lead and copper, by forming a protective film on the interior surface of those materials.

 

"Effective corrosion inhibitor residual" means a concentration of corrosion inhibitor in the drinking water sufficient to form a passivating film on the interior walls of pipe.

 

"Elementary school" means a school classified by State and local practice as elementary and comprising any span of grades (including pre-school) through grade 8.

 

"Exceed" or "exceedance", relative to either the lead or the copper action level, means that the 90th percentile concentration of the samples the supplier collected during a six-month tap monitoring cycle is greater than the lead or copper action level.

 

"Fifth-liter tap sample" means a one-liter tap water sample a supplier collects under Section 611.356(b).

 

"Find-and-fix" means the requirements under this Subpart G that water systems must perform at every tap sampling site yielding a lead result above 15 µg/L.

 

"First-draw tap sample" means the first one-liter sample of tap water a supplier collects under Section 611.356(b)(2).

 

"Full lead service line replacement" means replacing a lead service line (as well as galvanized service lines requiring replacement) resulting in the entire length of the service line, regardless of service line ownership, complying with Section 611.126 at the time of replacement.  A full lead service line replacement includes replacing a service line having only one portion that is lead, such as a service line previously subject to a partial lead service line replacement, as long as the entire service line complies with Section 611.126 after the replacement.  A full lead service line replacement requires replacing galvanized service lines downstream of a lead service line.  A full lead service line replacement could leave a lead service line in place in the ground but out of service if using a new non-lead service line replaces the out-of-service lead service line.

 

"Galvanized requiring replacement" refers to a galvanized service line Section 611.354(a)(4)(B) describes.

BOARD NOTE:  This definition derives from 40 CFR 141.84(a)(4)(ii) for a term used in various rules.

 

"Galvanized service line" means iron or steel piping zinc-dipped to prevent corrosion and rusting.

 

"Gooseneck, pigtail, or connector" is a short section of flexible piping, typically not exceeding two feet, connecting segments of rigid service piping.  Lead goosenecks, pigtails, and connectors are not part of the lead service line, but Section 611.354(c) may require replacing them.

 

"Large supplier" means a supplier regularly serving water to more than 50,000 persons.

 

"Lead service line" means a portion of pipe made of lead connecting the water main to the building inlet.  A lead service line may be owned by the water system, the property owner, or both.  A galvanized service line is a lead service line if it was or is downstream of any lead service line or service line of unknown material.  If the only lead piping serving a home is a lead gooseneck, pigtail, or connector, and it is not a galvanized service line that is considered a lead service line, the service line is not a lead service line.  Under Section 611.356(a) only, a galvanized service line is not considered a lead service line.

 

"Lead status unknown service line" means a service line that has not been shown to comply with Section 611.126.  Physically verifying the material composition of a service line (e.g., copper or plastic) is not necessary for its lead status to be identified (e.g., if records demonstrate that the service line was installed after a municipal, State, or federal lead ban).

BOARD NOTE:  See the description of "lead status unknown" in Section 611.354(a)(4)(D).

 

"Lead trigger level" means a particular concentration of lead in water that prompts certain activities under this Subpart G.  The trigger level for lead is a concentration of 10 µg/L.

 

"Maximum permissible concentration" or "MPC" means the concentration of lead or copper in finished water entering the supplier's distribution system, which the Agency designates in a SEP based on the contaminant removal ability of the treatment properly operated and maintained.

BOARD NOTE:  This definition derives from 40 CFR 141.83(b)(4). (See Section 611.353(b)(4)(B).)

 

"Meet" or "comply with", relating to either the lead or the copper action level, means that the 90^th percentile concentration of the supplier's samples collected during a six-month tap monitoring cycle is less than or equal to the lead or copper action level.

 

"Mid-sized supplier" means a supplier regularly serving water to more than 10,000 persons up to 50,000 persons.

 

"Multiple-family residence" means a building in which multiple families currently reside, but not one that is also a "single-family structure".

 

"90^th percentile concentration" means the concentration of lead or copper the supplier computes under subsection (c)(4) using the results of tap water sampling under Section 611.356.

BOARD NOTE:  This definition derives from 40 CFR 141.80(c)(4).

 

"Optimal corrosion control treatment" or "OCCT" means the corrosion control treatment minimizing the lead and copper concentrations at users' taps while ensuring that the treatment will not violate any national primary drinking water regulations.

 

"Partial lead service line replacement" means replacing any portion of a lead service line or galvanized requiring replacement service line leaving any length of the lead service line or galvanized requiring replacement service line in service and requiring replacement upon completion of the work.  40 CFR 141.84(d) allows partial lead service line replacements under limited circumstances, but these do not count towards the mandatory or goal-based lead service line replacement rate under Section 611.354.

 

"Pitcher filter" means a non-plumbed water filtration device consisting of a gravity-fed water filtration cartridge and a filtered drinking water reservoir that is certified by its manufacturer, importer, or an accredited third-party certifying body as complying with the version of NSF/ANSI 53 in effect on the date of manufacture or import.

BOARD NOTE:  NSF/ANSI 53 is the health-based standard for lead and several other contaminants for water filter devices, including pitcher filter-type devices.  Identifying a device as certified under NSF/ANSI 53 at the time of purchase is possible.  NSF maintains an on-line list of certified devices at info.nsf.org/Certified/dwtu/listings_leadreduction.asp.  See the definition of "accredited third-party certifying body" in 35 Ill. Adm. Code 611.126(b) relating to NSF/ANSI 372.

 

"Practical quantitation limit" or "PQL" means the lowest concentration of an analyte (substance) that a well-operated laboratory can measure with a high degree of confidence that the analyte is present at or above that concentration.

BOARD NOTE:  This definition derives from 40 CFR 141.89(a)(1)(ii) and (a)(1)(iv).

 

"Pre-stagnation flushing" means opening taps to flush standing water from plumbing before a minimum six-hour stagnation period before lead and copper tap sampling under Subpart G.

 

"School" means any building or building complex associated with public, private, or charter institutions that primarily provides teaching and learning for elementary or secondary students.

 

"Secondary school" means a school comprising any span of grades beginning with the next grade following an elementary or middle school (usually 7, 8, or 9) and ending with or below grade 12.  This definition includes both junior high schools and senior high schools.

 

"Single-family structure" means a building constructed as a residence for a single-family that the occupant currently uses as a residence or place of business.

 

"Small system supplier" or "small CWS supplier" means a CWS serving 10,000 or fewer persons.

BOARD NOTE:  A small CWS is a small supplier that is a CWS.  This definition derives from the preamble of 40 CFR 141.93.  Corresponding Section 611.363 distinguishes a small CWS supplier from an NTNCWS supplier.

 

"Small supplier" means a supplier regularly serving water to 10,000 or fewer persons.

BOARD NOTE:  USEPA did not revise its corresponding definition of "small water system" in 40 CFR 141.2 from 3,300 or fewer to 10,000 or fewer persons.  This creates an inconsistency the Board corrected.

 

"Source water monitoring period" means any of the six-month periods during which a supplier must complete source water monitoring under Section 611.358.

BOARD NOTE:  The Board added this definition to avoid confusion with "tap sampling period," "tap monitoring cycle", and "water quality monitoring period", as used under this Subpart G, and "compliance period" and "compliance cycle", as used elsewhere in this Part and Section 611.101 defines.

 

"Supplier not applying corrosion control treatment" means a PWS not fulfilling either of two conditions or purchasing all of its water from a supplier not fulfilling either of two conditions:

 

Neither the PWS nor the supplier providing its water has Agency-approved optimal corrosion control treatment; or

 

No other water quality adjustment in either the PWS's or the supplier’s treatment train infrastructure includes adjusting pH or alkalinity or adding corrosion inhibitor.

 

"Tap monitoring cycle" means the period of time during which a supplier must sample taps for lead and copper analyses.  The lead and copper concentrations in tap samples determine the tap monitoring cycle, and the frequency can range from every six months (i.e., semi-annually) to once every nine years.  A supplier semi-annually sampling taps must collect samples no less frequently than every six months, while a supplier annually sampling taps must sample no less frequently than every year.  A supplier triennially sampling taps must collect samples no less frequently than every three years, and a supplier sampling taps under an Agency-issued waiver must sample no less frequently than every nine years.  The start of each new tap monitoring cycle, with the exception of semi-annual monitoring, must begin on January 1.

BOARD NOTE:  This term is equivalent to "tap sampling monitoring period" in 40 CFR  141.  "Tap monitoring cycle" describes sampling frequency.

 

"Tap sampling period" means the period within a tap monitoring cycle when the supplier must collect samples for lead and copper analysis.  For a supplier sampling at a reduced frequency, the supplier must sample taps between June and September, unless the Agency issues a SEP approving a different four-month period.

BOARD NOTE:  "Tap sampling period" describes when the supplier collects samples.

 

"Tap sampling protocol" means the instructions a supplier gives to residents or those sampling on the supplier’s behalf to sample taps under this Subpart G.

 

"Water quality monitoring period" means any of the six-month periods during which a supplier must complete a cycle of tap and entry point water quality monitoring under Section 611.357.

BOARD NOTE:  The Board added this definition.  USEPA refers to these as "monitoring periods".  The Board uses "water quality monitoring period" to avoid confusion with "tap sampling period," "tap monitoring cycle", and "source water monitoring period", as used under this Subpart G, and "compliance period" and "compliance cycle", as used elsewhere in this Part and Section 611.101 defines.

 

"Wide-mouthed bottles" means bottles one liter in volume having a mouth that is at least 55 mm wide.

 

BOARD NOTE:  This subsection (b) derives from 40 CFR 141.2.

 

c)         Lead Trigger Level and Lead and Copper Action Levels.  The supplier determines the lead trigger levels and lead and copper action levels based on tap water samples it collects under 40 CFR 141.86 to calculate the 90th percentile concentration and tests using the analytical methods in 40 CFR 141.89.

 

1)         The supplier exceeds the lead trigger level if the 90th percentile lead concentration as subsection (c)(4) specifies is determined to be greater than 10 µg/L.

 

2)         The supplier exceeds the lead action level if the 90^th percentile lead concentration is greater than 15 µg/L.

 

3)         The supplier exceeds the copper action level if the 90^th percentile copper concentration is greater than 1.3 mg/L.

 

4)         The supplier must compute the 90^th percentile lead and copper concentrations using the specified procedure:

 

A)        Suppliers Not Having Sites with a Lead Service Line and Only Having Tier 3, 4, or 5 Sites Under 40 CFR 141.86(a)

 

i)          The supplier must list the results of all lead or copper samples it took during a tap sampling period in ascending order, ranging from the sample with the lowest concentration to the sample with the highest concentration.  The supplier must assign each sampling result an ordinal number, ascending by single integers, assigning the number 1 for the sample with the lowest contaminant level.  The number the supplier assigns to the sample with the highest contaminant level must equal the total number of samples the supplier took.

 

ii)         To determine the 90th percentile sample, the supplier must multiply the total number of samples taken during the tap sampling period times 0.9.

 

iii)        The contaminant concentration in the sample corresponding with the ordinal number subsection (c)(4)(A)(ii) yields is the 90^th percentile concentration.

 

iv)        For a supplier collecting five samples per tap sampling period, the 90^th percentile concentration is the average of the highest and second highest concentrations.

 

v)         For a supplier the Agency allows to collect fewer than five samples under Section 611.356(c) or failing to collect five samples, the result for the sample with the highest concentration is the 90^th percentile concentration.

 

B)        Suppliers Having Enough Sites with a Lead Service Line Identified as Tier 1 or 2 Under 40 CFR 141.86(a) to Meet the Minimum Number of Sites 40 CFR 141.86(c) Requires

 

i)          The supplier must arrange the results of all lead or copper samples it took at Tier 1 or Tier 2 sites during a tap sampling period in ascending order from the sample with the lowest concentration to the sample with the highest concentration.  The supplier must not include sample results from Tier 3, 4, or 5 sites in this calculation.  The supplier must assign each sampling result a number, beginning with the number 1 for the sample with the lowest contaminant concentration and ascending by single integers through increasing concentrations.  The number assigned to the sample with the highest contaminant concentration must equal the total number of samples the supplier took.

 

ii)         The supplier must multiply the number of Tier 1 or Tier 2 sites during the tap sampling period times 0.9.

 

iii)        The 90th percentile concentration is the contaminant concentration in the numbered sample corresponding with the number the calculation under subsection (c)(4)(B)(ii) yields.

 

iv)        For a supplier serving fewer than 100 people that collects five samples per tap sampling period, the 90th percentile concentration is the average of the highest and second highest concentration.

 

v)         For a supplier the Agency allows to collect fewer than five samples under Section 141.86(c), or failing to collect five samples, the highest sample concentration is the 90th percentile concentration.

 

C)        Suppliers Having Sites with a Lead Service Line Identified as Tier 1 or 2 Under Section 141.86(a) but Fewer Than the Minimum Number of Sites Section 141.86(c) Requires

 

i)          The supplier must combine the results of all lead or copper samples it took at Tier 1 or Tier 2 sites with a sufficient number of the highest results from Tier 3, 4, or 5 sites to complete the minimum number of sites.  The supplier must arrange the combined results in ascending order from the sample with the lowest concentration to the sample with the highest concentration.  The supplier must not include sample results from any remaining Tier 3, 4, and 5 sites in this calculation.  The supplier must assign each sampling result a number, beginning with the number 1 for the sample with the lowest contaminant concentration and ascending by single integers through increasing concentrations.  The number the supplier assigns to the sample with the highest contaminant concentration must equal the total minimum number of sites listed in Section 141.86(c).

 

ii)         The supplier must multiply the number of Tier 1 or Tier 2 sites during the tap sampling period times 0.9.

 

iii)        The 90th percentile concentration is the contaminant concentration in the numbered sample corresponding with the number the calculation under subsection (c)(4)(C)(ii) yields.

 

iv)        For a supplier serving fewer than 100 people that collects five samples per tap sampling period, the 90th percentile concentration is the average of the highest and second highest concentration.

 

v)         For a supplier the Agency allows to collect fewer than five samples under Section 611.356(c) or failing to collect five samples, the highest sample concentration is the 90th percentile concentration.

 

d)         Corrosion Control Requirements

 

1)         Every supplier must install and operate corrosion control treatment under Sections 611.351 and 611.352 meeting the definition of optimal corrosion control treatment.

 

2)         Any supplier complying with the applicable corrosion control treatment requirements the Agency specifies under Sections 611.351 and 611.352 is deemed as complying with subsection (d)(1).

 

3)         A small CWS or NTNCWS supplier complying with the applicable small supplier compliance flexibility requirements the Agency specifies under Sections 611.351(a)(3) and 611.363 complies with the treatment requirement in subsection (d)(1).

 

4)         A supplier must notify the Agency in writing under 40 CFR 141.90(a)(3) of any upcoming long-term change in water treatment or plan to add a new source as Section 611.360(a)(3) describes.  The supplier must not implement a long-term change in water treatment or add a new source until after the Agency reviews and approves the action in a SEP.  The SEP may require the supplier to conduct additional monitoring or take other action the Agency deems appropriate to ensure that the supplier maintains minimal levels of corrosion control in its distribution system.

 

e)         Source Water Requirements 

 

1)         Any supplier exceeding the lead or copper action level must implement all applicable source water treatment requirements the Agency specifies under Section 611.353.

 

2)         A supplier planning changes in its source water or making long-term treatment changes must describe the change to the Agency in writing under Sections 611.351(a)(3), 611.356(d)(2)(D), and 611.360(a)(3).  The supplier must not implement the change until the Agency reviews and approves the change in a SEP.

 

f)         Lead Service Line Replacement and Inventory.  A supplier must conduct lead service line replacements as this subsection (f) requires.

 

1)         Any supplier whose system exceeds the lead action level subsection (c) specifies must complete mandatory lead service line replacement.  The supplier must conduct lead service line replacement under Section 611.354(g) and must include public education under Section 611.355(a) and (b).

 

2)         A supplier exceeding the lead trigger level subsection (c) specifies must complete goal-based lead service line replacement under Section 611.354(f) and public education under Section 611.355(g) and (h).

 

3)         All suppliers must prepare an inventory of service lines connected to their distribution systems, whether or not the supplier owns or controls the service lines, to identify lead service lines and lead status unknown service lines.  The supplier must prepare the inventory under Section 611.354(a).

 

g)         Public Education and Notification Requirements.  Under Section 611.355(d), the supplier must provide notification of the lead tap water monitoring results to the persons served at each tested site (tap).  A CWS supplier must conduct annual outreach to the Illinois Department of Public Health and local health agencies under Section 611.355(i).  The supplier must complete additional actions:

 

1)         Any supplier exceeding the lead action level must implement the public education requirements under Section 611.355.

 

2)         Any supplier exceeding the lead trigger level subsection (c) specifies must notify all customers with a lead service line under Section 611.355(g).

 

3)         Any supplier exceeding the lead action level subsection (c) specifies must notify the public under Subpart V.

 

4)         Any supplier with lead service lines, galvanized service lines needing replacement, or lead status unknown service lines in its inventory, as Section 611.354(a) specifies, must notify all consumers with a lead service line, galvanized service line needing replacement, or a lead status unknown service line under Section 611.355(e).

 

5)         Any supplier failing to reach its lead service line replacement rate goal, as required under Section 611.354(f) must conduct outreach activities in accordance with Section 611.355(h).

 

h)         Monitoring and Analytical Requirements.  A supplier must complete all tap water monitoring for lead and copper, monitoring for water quality parameters, and source water monitoring for lead and copper and analyze the monitoring results under this Subpart G as Sections 611.356, 611.357, 611.358, and 611.359 require.

 

i)          Reporting Requirements.  A supplier must report any information the treatment provisions of this Subpart G and Section 611.360 require to the Agency.

 

j)          Recordkeeping Requirements.  A supplier must maintain records as Section 611.361 requires.

 

k)         Violating National Primary Drinking Water Regulations.  Failing to comply with this Subpart G, including conditions the Agency imposes in a SEP, violates the lead and copper NPDWR.

 

l)          Testing in Schools and Child Care Facilities.  A supplier must collect samples from all schools and child care facilities within its distribution system under Section 611.362.

 

BOARD NOTE:  This Section derives from 40 CFR 141.80.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.351  Applicability of Corrosion Control

 

a)         Corrosion Control Treatment.  This Section provides when a supplier must complete the corrosion control treatment steps in subsection (d) or (e) to optimize or re-optimize corrosion control treatment based on size, whether the supplier has corrosion control treatment, and whether the supplier exceeded the lead trigger level, lead action level, or copper action level.

 

1)         Large Suppliers

 

A)        A large supplier applying corrosion control treatment that exceeds either the lead trigger level or copper action level must complete the corrosion control treatment steps subsection (d) specifies.

 

B)        A large supplier not applying corrosion control treatment with 90th percentile concentration results under Section 611.350(c)(4) that exceeds either the lead practical quantitation limit of

0.005 mg/L or the copper action level must complete the corrosion control treatment steps subsection (e) specifies.

 

C)        The Agency may issue a SEP requiring a large supplier applying corrosion control treatment with 90th percentile concentration results under Section 611.350(c)(4) exceeding the lead practical quantitation limit but not exceeding the lead trigger level or the copper action level to complete the corrosion control treatment steps in subsection (d).

 

2)         Mid-Sized Suppliers (serving >10,000 and ≤50,000 people)

 

A)        A mid-sized supplier applying corrosion control treatment that exceeds either the lead trigger level or the copper action level must complete the corrosion control treatment steps subsection (d) specifies.

 

B)        A mid-sized supplier not applying corrosion control treatment that exceeds either the lead or copper action level must complete the corrosion control treatment steps subsection (e) specifies.

 

C)        A mid-sized supplier not applying corrosion control treatment that exceeds the lead trigger level but does not exceed the lead or copper action level must complete the treatment recommendation step subsection (e)(1) specifies (Step 1).  The water system must complete the remaining steps subsection (e) specifies if the supplier subsequently exceeds either the lead or copper action level.

 

3)         Small CWS and Non-Transient, Non-Community Water System Suppliers

 

A)        A small CWS or NTNCWS supplier applying corrosion control treatment that exceeds the lead trigger level or the lead action level but does not exceed the copper action level must complete the corrosion control treatment steps subsection (d) specifies if the Agency issues a SEP approving corrosion control treatment as a compliance option under Section 611.363(a).

 

B)        A small CWS or NTNCWS supplier applying corrosion control treatment that exceeds the copper action level must complete the corrosion control treatment steps subsection (d) specifies.

 

C)        A small CWS or NTNCWS supplier not applying corrosion control treatment that exceeds the lead action level must complete the corrosion control treatment steps subsection (e) specifies if the Agency issues a SEP approving corrosion control treatment as a compliance option under Section 611.363.

 

D)        A small CWS or NTNCWS supplier not applying corrosion control treatment that exceeds the copper action level must complete the corrosion control treatment steps subsection (e) specifies.

 

b)         Suppliers Deemed to Have Optimized Corrosion Control.  Subsection (b)(1), (b)(2), or (b)(3) deems a supplier to have OCCT or re-optimized OCCT if the supplier satisfies one of the criteria specified in the subsection.  Any system subsection (b)(1), (b)(2), or (b)(3) deems to have OCCT having corrosion control treatment in place must continue operating and maintaining that treatment and meeting any additional requirements the Agency determines are appropriate to ensure that the supplier maintains OCCT.

 

1)         Small and Mid-Sized Suppliers Not Applying Corrosion Control Treatment.  A small or mid-sized supplier not applying corrosion control treatment is deemed to have OCCT if it does not exceed the lead or copper action level during two consecutive six-month tap monitoring cycles and remains at or below the lead trigger level and copper action level in all subsequent tap monitoring cycles under Section 611.356.

 

2)         Small and Mid-Sized Suppliers Applying Corrosion Control Treatment and Not Exceeding Levels.  A small or mid-sized supplier applying corrosion control treatment is deemed to have OCCT if it does not exceed the lead or copper action level during two consecutive six-month tap monitoring cycles under Section 611.356 and remains at or below the lead trigger level and copper action level in all subsequent tap monitoring cycles under Section 611.356.  If a small or mid-sized supplier applying corrosion control treatment exceeds the lead trigger level but does not exceed the lead or copper action level during two consecutive six-month tap monitoring cycles and remains at or below the lead and copper action levels in all subsequent tap monitoring cycles the supplier conducts under Section 611.356, that supplier is deemed to have re-optimized OCCT by complying with this Section.  If the Agency issued a SEP setting optimal water quality parameters (OWQPs) under subsection (d) or (e), a supplier is not eligible to be deemed as having optimized or re-optimized OCCT under subsection (b). 

 

3)         Results Less Than or Equal to the Practical Quantitation Level (PQL) for Lead.  Monitoring results deem a supplier to have optimized or re-optimized OCCT if the supplier submits results of tap water monitoring under Section 611.356 demonstrating that the 90th percentile lead concentration is less than or equal to the lead PQL of 0.005 mg/L and does not exceed the copper action level for two consecutive six-month tap monitoring cycles, and the Agency did not issue a SEP setting OWQPs under subsection (d) or (e).  Any water system this subsection (b)(3) deems to have optimized corrosion control must continue tap water monitoring for lead and copper no less frequently than once every three calendar years using the reduced number of sites Section 611.356(c) specifies and collecting the samples at times and locations Section 611.356(d)(4)(E) specifies.  If 90^th percentile tap sample results exceeds the lead practical quantitation level (0.005 mg/L) or copper action level during any tap sampling period, the supplier is no longer eligible to be deemed to have optimized OCCT under this subsection without first completing the treatment steps specified in subsection (d) and (e) of this section.

 

c)         Completing Corrosion Control Steps for Small and Mid-Sized Suppliers Not Applying Corrosion Control Treatment

 

1)         Any small or mid-sized supplier not applying corrosion control treatment, otherwise required to complete the corrosion control steps in subsection (e) because it exceeded the lead or copper action level, may cease completing the steps after not exceeding either the lead or copper action levels during each of two consecutive six-month tap monitoring cycles under Section 611.363 before beginning Step 3 under subsection (e)(3) or Step 5 under subsection (e)(5).  The supplier needs not begin the applicable of Step 3 or Step 5, except that a mid-sized supplier with lead service lines or a small supplier with lead service lines choosing the corrosion control option under Section 611.363 must complete a corrosion control treatment study under subsection (e)(3)(A).  A supplier initiating Step 5 may not cease the steps and must complete all remaining steps in subsections (e)(6) through (e)(8).

 

2)         A supplier ceasing the steps prior to either Step 3 or Step 5 and later exceeding the lead or copper action level may not cease the steps a second time and must complete the applicable treatment steps beginning with the first treatment step that the supplier previously did not complete in its entirety.

 

3)         The Agency may issue a SEP requiring a supplier to repeat treatment steps the supplier previously completed if the Agency determines that this is necessary to properly implement the treatment requirements of this Section.  The Agency must explain the basis for its decision in any SEP.

 

4)         A small or mid-sized supplier exceeding the lead or copper action level must implement corrosion control treatment steps under subsection (e) (including a supplier deemed to have optimized corrosion control under subsection (b)(1)).

 

d)         Treatment Steps and Deadlines for Suppliers Re-Optimizing OCCT.  Except as subsection (b)(2) or Section 611.363 provides otherwise, a supplier with corrosion control treatment must complete certain corrosion control treatment steps (the referenced portions of Sections 611.352, 611.356, and 611.357 the steps describe) before the indicated times:

 

1)         Step 1

 

A)        A supplier other than one to which subsection (d)(1)(B) applies must recommend re-optimized OCCT (Section 611.352(c)) within six months after the end of the tap sampling period during which the supplier exceeds either the lead trigger level or copper action level.  The Agency may issue a SEP allowing a supplier to modify its existing corrosion control treatment without a study for a supplier exceeding the lead trigger level but not the lead or copper action level.  The Agency must specify re-optimized OCCT within six months after receiving the supplier’s treatment recommendation.  The supplier must modify its corrosion control treatment to install re-optimized OCCT within six months after the Agency specifies re-optimized OCCT.

 

B)        A supplier having lead service lines that exceeds the lead action level must harvest lead pipes from its distribution system, construct flow-through pipe loops, and operate the loops with finished water within one year after the end of the tap sampling period during which the supplier exceeds the lead action level.  The supplier must proceed to Step 3 under subsection (d)(3) and conduct the corrosion control studies for re-optimizing OCCT under subsection (d)(3)(A) using the pipe loops.

 

2)         Step 2

 

A)        A large supplier must conduct the corrosion control studies for re-optimizing OCCT under subsection (d)(3) (Step 3), unless the system is at or below the lead action level and the Agency issues a SEP modifying the existing corrosion control treatment the Agency specified under subsection (d)(1)(A) (Step 1).

 

B)        Within 12 months after the end of the tap sampling period during which a small or mid-sized supplier applying corrosion control treatment exceeds the lead trigger level or copper action level, the Agency may issue a SEP requiring the supplier to perform corrosion control studies for re-optimizing OCCT (Section 611.352(c)(1) or (c)(2)).  If the Agency does not require the supplier to perform corrosion control studies, the Agency must issue a SEP specifying re-optimized OCCT (Section 611.352(d)(2)) within the timeframes in subsections (d)(2)(B)(i) and (d)(2)(B)(ii).

 

i)          A mid-sized supplier must perform corrosion control studies for re-optimizing OCCT within 12 months after the end of the tap sampling period during which the supplier exceeded the lead trigger level or copper action level.

 

ii)         A small supplier must perform corrosion control studies for re-optimizing OCCT within 18 months after the end of the tap sampling period during which the supplier exceeded the lead trigger level or copper action level.

 

3)         Step 3

 

A)        A supplier having lead service lines that exceeds the lead action level must complete the corrosion control treatment studies for re-optimizing OCCT within 30 months after the end of the tap sampling period during which the supplier exceeded the lead action level.

 

B)        If subsection (d)(2) (Step 2) requires the supplier to perform corrosion control studies, the supplier must complete the studies (Section 611.352(c)(2)) within 18 months after the Agency issues a SEP requiring the supplier to conduct the studies.

 

4)         Step 4

 

A)        The Agency must issue a SEP designating re-optimized OCCT (subsection (d)(3)(A) within six months after the supplier completes subsection (d)(3)(A) (Step 3).

 

B)        If the supplier performed corrosion control studies under subsection (d)(2) (Step 2), the Agency must issue a SEP designating re-optimized OCCT (Section 611.352(d)(2) or (d)(4)) within six months after the supplier completes subsection (d)(3)(B) (Step 3).

 

5)         Step 5

 

A)        A large supplier must complete modifying its corrosion control treatment to have installed re-optimized OCCT within 12 months after the supplier completes subsection (d)(4)(A) (Step 4).

 

B)        A small or mid-sized supplier must install re-optimized OCCT (Section 611.352(e)(1)) within 12 months after the supplier completes subsection (d)(4)(B) (Step 4).

 

6)         Step 6  A supplier must complete follow-up sampling (Sections 611.356(d)(2) and 611.357(c)) within 12 months after the supplier completes subsection (d)(5)(A) or (d)(5)(B) (Step 5).

 

7)         Step 7  The Agency must review the supplier’s installed treatment and designate optimal water quality control parameters (Section 611.352(f)(1)) within six months after completing subsection (d)(6) (Step 6)..

 

8)         Step 8  The supplier must operate complying with the Agency-designated optimal water quality control parameters (Section 611.352(g)) and continue conducting tap sampling (Section 611.356(d)(3) and monitoring water quality parameters under Section 611.357(d)).

 

e)         Treatment Steps and Deadlines for Suppliers Not Applying Corrosion Control Treatment. Except as subsection (b) or Section 611.363 provides otherwise, a supplier not applying corrosion control treatment must complete certain corrosion control treatment steps (described in the referenced portions of Sections 611.352, 611.356, and 611.357) before the indicated times.

 

1)         Step 1

 

A)        A supplier other than one to which subsection (e)(1)(B) or (e)(1)(C) applies must recommend OCCT (Section 611.352(a)(1), (a)(2), (a)(3), or (a)(4)) within six months after the end of the tap sampling period during which the supplier exceeds either the lead trigger level or copper action level.

 

B)        A supplier having lead service lines and exceeding the lead action level must harvest lead pipes from its distribution system, construct flowthrough pipe loops, and operate the loops with finished water within one year after the end of the tap sampling period during which the supplier exceeds the lead action level.  The supplier must proceed to Step 3 in subsection (e)(3) of this section and conduct the corrosion control studies under subsection (e)(3) using the pipe loops, for optimizing OCCT under subsection (e)(3)(A).

 

C)        A large supplier subsection (a)(1)(B) directs to perform corrosion control treatment under this subsection (e) must conduct the corrosion control studies for optimizing OCCT under subsection (e)(3) (Step 3).

 

2)         Step 2:  Within 12 months after the end of the tap sampling period during which a supplier exceeds the lead or copper action level, if not otherwise required by this rule, the Agency may issue a SEP requiring the supplier to perform corrosion control studies (Section 611.352(b)(1)).  If the Agency does not require the supplier to perform corrosion control studies, the Agency must issue a SEP specifying OCCT (under Section 611.352(d)(1)) within the applicable timeframe in subsections (e)(2)(A) and (e)(2)(B).

 

A)        For a mid-sized supplier, within 18 months after the end of the tap monitoring cycle during which the supplier exceeded the lead trigger level or copper action level; or

 

B)        For a small supplier, within 24 months after the end of the tap monitoring cycle during which the supplier exceeded the lead trigger level or copper action level.

 

3)         Step 3

 

A)        A large supplier having or not having lead service lines that exceeds the lead action level or a small or mid-sized supplier having lead service lines that exceeds the lead action level must complete the corrosion control treatment studies for optimizing OCCT within 30 months after the end of the tap sampling period during which the supplier exceeds the lead action level.

 

B)        If the Agency requires a supplier to perform corrosion control studies under subsection (e)(2) (Step 2), the supplier must complete the studies (Section 611.352(c)(1)) within 18 months after the Agency issues a SEP requiring the supplier to conduct the studies.

 

4)         Step 4

 

A)        The Agency must issue a SEP designating re-optimized OCCT (Section 611.352(d)(3)) within six months after the supplier completes subsection (d)(3)(A) (Step 3).

 

B)        If the supplier has performed corrosion control studies under subsection (e)(2) (Step 2), the Agency must issue a SEP designating OCCT (Section 611.352(d)(1)) within six months after subsection (e)(3) (Step 3) is complete.

 

5)         Step 5  The supplier must install OCCT (Section 611.352(e)) within 24 months after the Agency designates OCCT under subsection (e)(2) or (e)(4) (Step 2 or Step 4).

 

6)         Step 6  The supplier must complete follow-up sampling under Sections 611.356(d)(2)(A) and 611.357(c) within 12 months after completing subsection (e)(5) (Step 5).

 

7)         Step 7  The Agency must review the supplier's installation of treatment and issue a SEP approving optimal water quality control parameters (Section 611.352(f)(1)) within six months after the supplier completes subsection (e)(5) (Step 5).

 

8)         Step 8  The supplier must comply with the Agency-approved optimal water quality control parameters (Section 611.352(g)(1)) and continue tap sampling (Section 611.356(d)(3)) and monitoring water quality parameters (Section 611.357(d)).

 

f)         Treatment Steps and Deadlines for Small CWS and NTNCWS Suppliers Electing Corrosion Control Treatment (CCT) As a Compliance Option under Section 611.363 or As the Agency Requires.  A small CWS or NTNCWS supplier selecting the corrosion control treatment option as small supplier compliance flexibility under Section 611.363(a)(2) must complete two steps by the indicated times:

 

1)         Step 1.  A supplier must recommend the corrosion control treatment option as small supplier compliance flexibility under Section 611.363(a)(2) within six months after the end of the tap sampling period during which the supplier exceeds either the lead trigger level or the lead action level.  When recommending to the Agency, the supplier must comply with Section 611.352(a)(1).

 

2)         Step 2.  The Agency must issue a SEP approving the recommendation of corrosion control treatment option as small supplier compliance flexibility or designating an alternative option under Section 611.363(a) within six months after the supplier recommends the option under subsection (f)(1) (Step 1).  A supplier the Agency requires to optimize or re-optimize OCCT must follow the schedules in subsection (d) or (e), beginning with Step 3 in subsection (d)(3) or (e)(3), unless the Agency specifies OCCT under the applicable of subsection (d)(2)(B) or (e)(2)(B).

 

BOARD NOTE:  This Section derives from 40 CFR 141.81.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.352  Corrosion Control Treatment

 

Designating Optimal Corrosion Control Treatment for Systems Optimizing or Re-Optimizing Corrosion Control Treatment.  A supplier must complete the corrosion control treatment requirements in this Section as they apply to the supplier under Section 611.351.

 

a)         System Recommendation Regarding Corrosion Control Treatment for Suppliers Not Having Lead Service Lines and Suppliers Having Lead Service Lines but Not Exceeding the Lead Action Level

 

1)         A supplier without corrosion control that must recommend under Section 611.351(e) one or more of the corrosion control treatments in subsection (c)(1)(A) for the Agency to designate must base its recommendation on the results of lead and copper tap monitoring and water quality parameter monitoring.

 

A)        A small CWS supplier or NTNCWS supplier exceeding the copper action level and recommending corrosion control treatment to the Agency under Section 611.363(a) must comply with this subsection (a)(1).

 

B)        The Agency may issue a SEP requiring the supplier to conduct additional water quality parameter monitoring to assist the Agency in reviewing the supplier's recommendation.

 

2)         A small CWS supplier or NTNCWS supplier subject to this subsection (a) not applying corrosion control treatment that chooses to pursue a small water system compliance flexibility option and is required to recommend an option in compliance with Section 611.351(f) must, based on the results of lead tap sampling and water quality parameter monitoring, recommend designation of one of the options listed in Section 611.363.  A supplier not having lead service lines, exceeding the lead action level, and selecting corrosion control under Section 611.363(a)(2) must recommend that the Agency designate one or more of the corrosion control treatments in subsection (c)(1) as OCCT for that system.

 

3)         A supplier exceeding the lead action level and selecting corrosion control treatment under Section 611.363(a)(2) must recommend that the Agency designate one or more of the corrosion control treatments in subsection (c)(1)(A) as the OCCT for its system.  A small or mid-sized supplier exceeding the lead trigger level but not exceeding the lead or copper action level does not need to perform a corrosion control study under subsection (c) unless the Agency issues a SEP requiring the supplier to do so.

 

4)         A small CWS or NTNCWS supplier applying corrosion control treatment exceeding the lead action level and selecting corrosion control under Section 611.363(a)(2) must recommend designation of one or more of the corrosion control treatments in subsection (c)(2) as OCCT for its system.

 

5)         The Agency may issue a SEP waiving subsection (a)(4)’s OCCT-recommendation requirement for a supplier if the SEP requires the supplier to complete a corrosion control study within three months after the end of the tap sampling period during which the supplier exceeded the lead action level.  In that case, the supplier must proceed directly to subsection (c) and complete a corrosion control study.

 

b)         Agency-Required Studies to Identify Initial Optimal Corrosion Control Treatment and Re-Optimized OCCT Except for Large Suppliers and Small and Mid-Sized Suppliers Having Lead Service Lines and Exceeding the Lead Action Level.  Certain suppliers must conduct corrosion control treatment studies:  large suppliers exceeding the lead action level, large suppliers not applying corrosion control treatment whose 90^th percentile concentration results exceed either the lead practical quantitation limit of 0.005 mg/L or the copper action level, mid-sized water system suppliers having lead service lines and exceeding the lead action level, and small suppliers having lead service lines and exceeding the lead action level and selecting the corrosion control treatment option under Section 611.363(a).

 

1)         The Agency may issue a SEP requiring a small or mid-sized supplier not applying corrosion control treatment exceeding the lead or copper action level to perform corrosion control treatment studies under subsection (c)(1) to identify OCCT for the supplier's system.

 

2)         The Agency may issue a SEP requiring a small or mid-sized supplier not applying corrosion control treatment and exceeding the lead trigger level but not the lead or copper action level to perform corrosion control treatment studies under subsection (c)(1) to identify OCCT for its system.  The supplier must install this corrosion control treatment if the supplier subsequently exceeds the lead or copper action level.

 

3)         The Agency may issue a SEP requiring a small or mid-sized supplier applying corrosion control treatment exceeding either the lead trigger level or copper action level to perform corrosion control treatment studies under subsection (c)(2) to identify re-optimized OCCT for its system (i.e., after evaluating re-optimized OCCT).

 

c)         Performing Corrosion Control Studies

 

1)         A supplier not applying corrosion control treatment that is required to conduct corrosion control studies must complete certain actions:

 

A)        A supplier not applying corrosion control treatment must evaluate the effectiveness of each of certain treatments and combinations of those treatments if appropriate to identify the OCCT for its system:

 

i)          Adjusting alkalinity and pH;

 

ii)         Adding an orthophosphate- or silicate-based corrosion inhibitor at a concentration sufficient to maintain an effective corrosion inhibitor residual concentration in all test samples.

 

iii)        Adding an orthophosphate-based corrosion inhibitor at a concentration sufficient to maintain an orthophosphate residual concentration of 1 mg/L (as PO₄) in all test samples; and

 

iv)        Adding an orthophosphate-based corrosion inhibitor at a concentration sufficient to maintain an orthophosphate residual concentration of 3 mg/L (as PO₄) in all test samples.

 

B)        The supplier must evaluate each of the corrosion control treatments using pipe rig/loop tests; metal coupon tests; partial-system tests; or analyses based on documented analogous treatments in other systems of similar size, water chemistry, and distribution system configuration.  A large or mid-sized supplier or a small CWS or NTNCWS supplier selecting the corrosion control treatment option under Section 611.363 having lead service lines and exceeding the lead action level must conduct pipe rig/loop studies using harvested lead service lines from its distribution system to assess the effectiveness of corrosion control treatment options on the existing pipe scale.  The supplier may use metal coupon tests as a screen to reduce the number of options the supplier evaluates using pipe rig/loop tests to the current conditions and two options.

 

C)        The supplier must measure specific water quality parameters in any tests the supplier conducts under this subsection (c)(1)(C) before and after evaluating the corrosion control treatments in subsections (c)(1)(A) and (c)(1)(B):

 

i)          Lead;

 

ii)         Copper;

 

iii)        pH;

 

iv)        Alkalinity;

 

v)         Orthophosphate as PO₄ (when the supplier uses an orthophosphate-based inhibitor); and;

 

vi)        Silicate (when the supplier uses an inhibitor containing a silicate compound).

 

D)        The supplier must identify all chemical or physical constraints that limit or prohibit using any particular corrosion control treatment and document those constraints:

 

i)          With data and documents showing that a particular corrosion control treatment adversely affected other drinking water treatment processes when that treatment was used by another supplier with water having comparable water quality characteristics.  Systems using coupon studies to screen or pipe loop/rig studies to evaluate treatment options must not exclude treatment strategies from the studies based on the constraints identified in this section.

 

ii)         With data and documents demonstrating that the supplier previously evaluated a particular corrosion control treatment, finding either that the treatment is ineffective or adversely affects other drinking water quality treatment processes.  Systems using coupon studies to screen or pipe loop/rig studies to evaluate treatment options must not exclude treatment strategies from the studies based on the constraints identified in this section unless the treatment was found to be ineffective in a previous pipe loop/rig study.

 

E)        The supplier must evaluate the effect of the evaluated corrosion control treatment chemicals on other water quality treatment processes.  A supplier using coupon studies to screen or pipe loop/rig studies to evaluate treatment options must not exclude treatment strategies from the studies based on the effects the supplier identifies under this Section.

 

F)         Based on an analysis of the data the supplier generated during each evaluation, the supplier must recommend in writing to the Agency the treatment option the corrosion control studies indicate constitutes OCCT for the supplier's system.  The supplier must give a rationale for its recommendation together with all supporting documentation subsections (c)(2)(A) through (c)(2)(E) specify.

 

2)         A supplier applying corrosion control treatment that must conduct corrosion control studies to determine re-optimized OCCT must complete specific tasks:

 

A)        The supplier must evaluate the efficacy of certain treatments and appropriate combinations of those treatments to identify the re-optimized OCCT for its system:

 

i)          Alkalinity or pH adjustment or re-adjustment;

 

ii)         Adding an orthophosphate- or silicate-based corrosion inhibitor at a concentration sufficient to maintain an effective corrosion inhibitor residual concentration in all test samples if the supplier does not already use the inhibitor;

 

iii)        Adding an orthophosphate-based corrosion inhibitor at a concentration sufficient to maintain an orthophosphate residual concentration of 1 mg/L (PO₄) in all test samples unless the current inhibitor process already meets this residual; and

 

iv)        Adding an orthophosphate-based corrosion inhibitor at a concentration sufficient to maintain an orthophosphate residual concentration of 3 mg/L (PO₄) in all test samples unless the current inhibitor process already meets this residual.

 

B)        The supplier must evaluate each of the corrosion control treatments using pipe rig/loop tests, metal coupon tests, partial-system tests, or analyses based on documented analogous treatments with other systems of similar size, water chemistry, and distribution system configurations.  If the supplier’s system has lead service lines and exceeds the lead action level, the supplier must conduct pipe rig/loop studies using harvested lead service lines from its distribution system to assess the efficacy of corrosion control treatment options on the existing pipe scale.  The supplier can use metal coupon tests as a screen to reduce the number of options it evaluates using pipe rig/loops to the current conditions and two options.

 

C)        The supplier must measure specific water quality parameters in any tests conducted under this subsection (c)(2)(C) before and after evaluating the corrosion control treatments in subsections (c)(2)(A) and (c)(2)(B):

 

i)          Lead;

 

ii)         Copper;

 

iii)        pH;

 

iv)        Alkalinity;

 

v)         Orthophosphate as PO₄ (if the supplier uses an orthophosphate-based inhibitor); and

 

vi)        Silicate (if the supplier uses a silicate-based inhibitor).

 

D)        The supplier must identify all chemical or physical constraints limiting or prohibiting using a particular corrosion control treatment and document those constraints with certain information:

 

i)          Data and documents showing that a particular corrosion control treatment adversely affected other drinking water treatment processes when another supplier with comparable water quality characteristics used the treatment.  A supplier using coupon studies to screen or pipe loop/rig studies to evaluate treatment options must not exclude treatment strategies from the studies based on the constraints the supplier identifies under this Section; or

 

ii)         Data and documents demonstrating that the supplier previously evaluated a particular corrosion control treatment and found that the treatment is ineffective or adversely affects other drinking water quality treatment processes.  A supplier using coupon studies to screen or pipe loop/rig studies to evaluate treatment options must not exclude treatment strategies from the studies based on the constraints the supplier identifies under this Section, unless the supplier found the treatment ineffective in a previous pipe loop/rig study.

 

E)        The supplier must evaluate the effect of the chemicals it uses for corrosion control treatment on other drinking water quality treatment processes.  A supplier using coupon studies to screen or pipe loop/rig studies to evaluate treatment options must not exclude treatment strategies from the studies based on the effects the supplier identifies under this Section.

 

F)         Based on its analysis of the data the supplier generated during each evaluation, the supplier must recommend to the Agency in writing the treatment option that the corrosion control studies indicate constitutes OCCT for its system.  The supplier must provide a rationale for its recommendation together with all supporting documentation subsections (c)(1)(A) through (c)(1)(E) specify.

 

d)         Agency Approval of Optimized and Re-Optimized Corrosion Control Treatment.  When designating OCCT, the Agency must consider the effects of additional corrosion control treatment on water quality parameters and other water quality treatment processes.  The Agency must notify the supplier of the basis for designating OCCT in any SEP it issues under this subsection (d).

 

1)         Designating OCCT for a Supplier Without Corrosion Control Treatment.  Considering available information, including applicable studies conducted under subsection (c)(1) or the supplier's recommended corrosion control treatment option, the Agency must issue a SEP designating from among the supplier-recommended corrosion control treatment option, alternative corrosion control treatments from among those in subsection (c)(1)(A), or an applicable alternative small supplier compliance flexibility option under Section 611.363(a).

 

2)         Designation of Re-Optimized OCCT for Suppliers Applying Corrosion Control Treatment.  Considering available information, including applicable studies under subsection (c)(2) or the supplier's recommended corrosion control treatment option, the Agency must issue a SEP designating from among the supplier-recommended corrosion control treatment option, alternative corrosion control treatments from among those in subsection (c)(2)(A), or an applicable alternative small supplier compliance flexibility option under Section 611.363(a).

 

e)         Installing OCCT and Re-Optimizing OCCT.  A supplier must properly install and operate the OCCT throughout its distribution system that the Agency approved under subsection (d).

 

f)         Agency Review of Treatment and Specification of Optimal Water Quality Control Parameters for OCCT and Re-Optimized OCCT.  The Agency must evaluate the results of all lead and copper tap sampling and water quality parameter sampling the supplier submits and determine whether the supplier properly installs and operates the OCCT the Agency approves under subsection (d)(1) or (d)(2).

 

1)         Upon reviewing the results of the supplier's tap water and water quality parameter monitoring, both before and after installing OCCT, the Agency must issue a SEP specifying operating parameters:

 

A)        A minimum value or range of values for pH at each entry point to the distribution system.

 

B)        A minimum pH value for all tap samples.  This value must be equal to or greater than 7.0, unless the Agency determines that a pH 7.0 is not technologically feasible or is not necessary for the supplier to optimize corrosion control.

 

C)        If the supplier uses a corrosion inhibitor, a minimum inhibitor concentration or range of concentrations for orthophosphate (as PO₄) or silicate measured at each entry point to the distribution system.

 

D)        If the supplier uses a corrosion inhibitor, the supplier must maintain a minimum orthophosphate or silicate concentration measured in all tap samples that is necessary to form a passivating film on the interior walls of the pipes of the distribution system, as determined by the Agency in a SEP.  If the supplier uses orthophosphate, the supplier must maintain an orthophosphate concentration equal to or greater than 0.5 mg/L (as PO₄) for OCCT the Agency designates under subsection (d)(1) or 1.0 mg/L for OCCT the Agency designates under subsection (d)(2), unless the Agency determines that meeting the applicable minimum orthophosphate residual is not technologically feasible or is not necessary for OCCT.

 

E)        If the supplier adjusts alkalinity as part of OCCT, a minimum concentration or a range of concentrations for alkalinity for each entry point to the distribution system and in all tap samples.

 

2)         The values for the applicable water quality control parameters in subsection (f)(1) must be those the Agency determines reflect OCCT for the supplier.

 

3)         The Agency must explain these determinations and give the basis for its decisions when issuing a SEP.

 

g)         Continued Operation and Monitoring for OCCT and Re-Optimized OCCT.  All suppliers optimizing or re-optimizing corrosion control must continue to operate and maintain OCCT, including maintaining water quality parameter values at or above minimum values or within ranges the Agency approved under subsection (f), under this subsection (g) for all samples the supplier collects under Section 611.357(d) through (f).  This subsection (g) applies to all suppliers that Section 611.357 does not require to monitor water quality parameters, including consecutive system suppliers distributing water that another supplier has treated applying corrosion control treatment and any suppliers applying corrosion control treatment, OCCT, or re-optimized OCCT.  The supplier must determine whether it complies with this subsection (g) every six months, as Section 611.357(d) specifies.  A supplier does not comply with this subsection (g) in any six-month period during which the supplier has excursions from any Agency-specified water quality parameter on more than nine cumulative days during the six-month period. An excursion occurs whenever the daily value for one or more of the water quality parameters measured at a sampling location is below the Agency-designated minimum value or outside the Agency-designated range.  The supplier calculates daily values as subsections (g)(1) through (g)(3) provide.  The Agency may exclude results from this calculation that it determines are obvious sampling errors. The supplier must record sampling errors even when not included in calculations.

 

1)         On days when the supplier collects more than one measurement for a water quality parameter at a sampling location, the daily value is the average of all results the supplier collected during the day, regardless of whether the supplier collected the samples through continuous monitoring, grab sampling, or a combination of both.

 

BOARD NOTE:  Corresponding 40 CFR 141.82(g)(1) further provides as follows:  If USEPA approves an alternative formula under 40 CFR 142.16(d)(1)(ii) in the State's application for a program revision submitted under 40 CFR 142.12, the approved formula is used to aggregate multiple measurements at a sampling point for the water quality parameters in lieu of the formula in this subsection (g)(1).

 

2)         On days when the supplier collects only one measurement for a water quality parameter at a sampling location, the daily value is that measurement.

 

3)         On days when the supplier collects no measurement for a water quality parameter at a sampling location, the daily value is the daily value calculated on the most recent day on which the supplier measured the water quality parameter at the sampling location.

 

h)         Modifying Agency Treatment Decisions for OCCT and re-optimized OCCT

 

1)         On its own initiative or in response to a request by the supplier, the Agency may issue a SEP modifying its determination of the OCCT under subsection (d) or of the optimal water quality control parameters under subsection (f).

 

2)         A supplier must request modification in writing, explaining the propriety of the modification and providing supporting documentation.

 

3)         The Agency may modify its determination if it determines that a change will ensure that the supplier continues optimizing corrosion control treatment.  A revised determination must give the new treatment requirements or water quality parameters, explain the basis for the Agency's decision, and provide an implementation schedule for completing the treatment modifications for re-optimized OCCT.

 

4)         Any interested person may submit information to the Agency bearing on whether the Agency should exercise its discretion and issue a SEP modifying its determination under subsection (h)(1).  An Agency determination not to act on information an interested person submits is not an Agency determination for the purposes of Sections 39 and 40 of the Act.

 

i)          USEPA Treatment Decisions on OCCT and re-optimized OCCT. Under 40 CFR 142.19, USEPA reserves the prerogative to review Agency OCCT treatment determinations under subsections (d)(1) or (d)(2), (f), or (h) and issue federal treatment determinations consistent with 40 CFR 141.82(d)(1) or (d)(2), (f), or (h) if USEPA finds that certain conditions exist:

 

1)         The Agency fails to issue a treatment determination by the applicable deadlines in Section 611.351 (corresponding with 40 CFR 141.81);

 

2)         The Agency abuses its discretion in a substantial number of instances or in instances affecting a substantial population; or

 

3)         The technical aspects of the Agency's determination would be indefensible in a federal enforcement action taken against the supplier.

 

j)          Find-and-fix Assessment for Tap Sample Sites Exceeding the Lead Action Level.  The supplier must conduct specific steps when a tap sampling site exceeds the lead action level in monitoring under Section 611.356.

 

1)         Step 1:  Corrosion Control Treatment Assessment.  The supplier must sample at a new water quality parameter sampling site that is on the same-sized water main, in the same pressure zone, and located within a half mile of the sampling site that exceeded the action lead level within five days after receiving the sample results.  A small supplier not applying corrosion control treatment may take up to 14 days to collect the samples.  The supplier must measure certain parameters:

 

A)        pH;

 

B)        Alkalinity;

 

C)        Orthophosphate (as PO₄), if the supplier uses an inhibitor containing an orthophosphate compound;

 

D)        Silica, if the supplier uses an inhibitor containing a silicate compound; and

 

E)        A supplier having an existing water quality parameter sampling site complying with this Section may sample from that site.

 

F)         A supplier that must meet optimal water quality control parameters but not having an existing water quality parameter sampling site complying with this Section must add new sampling sites to the minimum number of sites Section 611.357(g) requires.  The supplier must add sites until it has twice the minimum number of sites Section 611.357(a)(2)(A) requires.  If a supplier exceeds this upper threshold for the number of sites, the Agency may issue a SEP determining that a newer site can better assess the efficacy of the corrosion control treatment and remove existing sites during sanitary survey evaluating OCCT.

 

2)         Step 2:  Site Assessment.  A supplier must collect a follow-up sample at any tap sampling site exceeding the lead action level within 30 days after receiving the sample results.  The supplier may use different sample volumes or different sampling procedures collecting these follow-up samples to assess the source of elevated lead levels.  The supplier must submit samples it collects under this Section to the Agency but must not include them in calculating the 90th percentile concentration under Section 611.356.  If the supplier cannot collect a follow-up sample at a site, the supplier must document to the Agency why it was unable to collect a follow-up sample.

 

3)         Step 3:  Evaluating Results and Recommending OCCT or Other Actions.  Within six months after the end of the tap sampling period during which a supplier exceeds the lead action level, the supplier must evaluate the results of the monitoring conducted under subsections (j)(1) and (j)(2) to determine if the supplier must either locally or centrally adjust the OCCT or other distribution system actions are necessary and submit the recommendation to the Agency.  Modifying corrosion control treatment might not be necessary to address every exceedance.  Other distribution system actions may include flushing to reduce water residence time in the system.  If known from the site assessment, the supplier must note the cause of the elevated lead level in its recommendation to the Agency because site-specific issues can be an important factor in why the supplier does not recommend any adjustment of corrosion control treatment or other distribution system actions.  A supplier in the process of optimizing or re-optimizing OCCT under subsections (a) through (f) needs not recommend a find-and-fix treatment to the Agency.

 

4)         Step 4:  Agency Action.  The Agency must issue a SEP approving the supplier’s treatment recommendation or specify a different approach within six months after the supplier completes Step 3, as subsection (j)(3) describes.

 

5)         Step 5:  Implementing the Agency’s SEP.  If the Agency-issued SEP requires the water system to adjust the OCCT, the supplier must modify its corrosion control treatment within 12 months after completing Step 4, as subsection (j)(4) describes.  A supplier not applying corrosion control treatment and needing to install OCCT must follow the schedule in Section 611.351(e).

 

6)         Step 6:  Follow-up Sampling.  A supplier adjusting its OCCT must complete follow-up sampling (Sections 611.356(d)(2) and 611.357(c)) within 12 months after completing Step 5, as subsection (j)(5) describes.

 

7)         Step 7:  Agency Review.  For a supplier adjusting its OCCT, the Agency must review the supplier’s modified corrosion control treatment, and the Agency must designate optimal water quality control parameters (Section 611.352(f)(1)) within six months after the supplier completes Step 6, as subsection (j)(6) describes.

 

8)         Step 8:  Operating and Complying.  A supplier adjusting its OCCT must comply with the Agency-designated optimal water quality control parameters (Section 611.352(g)) and continue tap sampling (Sections 611.356(d)(3) and 611.357(d)).

 

BOARD NOTE:  This Section derives from 40 CFR 141.82.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)

 

Section 611.353  Source Water Treatment

 

A supplier must complete source water monitoring and treatment requirements (under subsection (b) and Sections 611.356 and 611.358) before specific deadlines.

 

a)         Deadlines for Completing Source Water Treatment Steps

 

1)         Step 1:  A supplier exceeding the lead or copper action level must complete lead and copper source water monitoring (under Section 611.358(b)) and recommend treatment to the Agency (under subsection (b)(1)) within 180 days after the end of the tap monitoring period during which the supplier exceeded the action level.

 

2)         Step 2:  The Agency must issue a SEP determining source water treatment (under subsection (b)(2)) within six months after the supplier submits monitoring results under step 1.

 

3)         Step 3:  If the Agency requires installing source water treatment, the supplier must install that treatment (under subsection (b)(3)) within 24 months after the Agency completes step 2.

 

4)         Step 4:  The supplier must complete follow-up tap water monitoring (under Section 611.356(d)(2)) and source water monitoring (under Section 611.358(c)) within 36 months after completion of step 2.

 

5)         Step 5:  The Agency must issue a SEP reviewing the supplier's installation and operation of source water treatment and specify MPCs for lead and copper (under subsection (b)(4)) within six months after the supplier completes step 4.

 

6)         Step 6:  The supplier must comply with the Agency-specified lead and copper MPCs (under subsection (b)(4)) and continue source water monitoring (under Section 611.358(d)).

 

b)         Source Water Treatment Requirements

 

1)         System Treatment Recommendation.  Any supplier exceeding the lead or copper action level must recommend to the Agency in writing one of the source water treatments in subsection (b)(2).  A supplier may recommend installing no treatment based on a demonstration that source water treatment is not necessary to minimize lead and copper levels at users' taps.

 

2)         Agency Determination Regarding Source Water Treatment

 

A)        The Agency must evaluate the results of all source water samples the supplier submitted to determine whether source water treatment is necessary to minimize lead or copper levels in water the supplier delivers to users' taps.

 

B)        If the Agency determines treatment is necessary, the Agency must issue a SEP requiring the supplier to install and operate either the source water treatment the supplier recommended (if any) or another from among specific source water treatment techniques:

 

i)          ion exchange;

 

ii)         reverse osmosis;

 

iii)        lime softening; or

 

iv)        coagulation/filtration.

 

C)        The Agency may require the supplier to submit, on or before a certain date, any additional information as the Agency determines is necessary to aid its review.

 

D)        The Agency must notify the supplier in writing of its determination, stating the basis for its decision.

 

3)         Installing Source Water Treatment.  A supplier must properly install and operate the source water treatment the Agency approves under subsection (b)(2).

 

4)         Agency Reviewing Source Water Treatment and Specifying Maximum Permissible Source Water Levels (MPCs)

 

A)        The Agency must review the source water samples the supplier took both before and after the supplier installs source water treatment and determine whether the supplier properly installs and operates the approved source water treatment.

 

B)        Based on its review, the Agency must issue a SEP approving the lead and copper MPCs for finished water entering the supplier's distribution system.  The MPC levels must reflect the contaminant removal capability of the treatment when properly operated and maintained.

 

C)        The SEP issued under subsection (b)(4)(B) must include the Agency's explanation of the basis for its decision under subsection (b)(4)(B).

 

5)         Continued Operation and Maintenance.  A supplier must maintain lead and copper levels below the MPCs the Agency approved at every sampling point the supplier monitors under Section 611.358.  The supplier does not comply with this subsection (b) if the level of lead or copper at any sampling point is greater than the MPC the Agency approved under subsection (b)(4)(B).

 

6)         Modifying Agency Treatment Decisions

 

A)        On its own initiative, or in response to a request by the supplier, the Agency may issue a SEP modifying its determination of the source water treatment under subsection (b)(2) or the lead and copper MPCs under subsection (b)(4).

 

B)        A supplier must make a request to modify in writing, explaining the propriety of the modification, and providing supporting documentation.

 

C)        The Agency may issue a SEP modifying its determination if it concludes that the change is necessary to ensure that the supplier continues minimizing lead and copper concentrations in source water.

 

D)        A revised determination under subsection (b)(6)(C) must state the new treatment requirements, explain the basis for the Agency's decision, and provide a schedule for completing the treatment modifications.

 

E)        Any interested person may submit information to the Agency in writing bearing on whether the Agency should exercise its discretion and issue a SEP modifying its determination under subsection (b)(2).  An Agency determination not to act on information an interested person submits is not an Agency determination for the purposes of Sections 39 and 40 of the Act.

 

7)         USEPA Treatment Decisions.  Under 40 CFR 142.19, USEPA reserves the prerogative to review Agency treatment determinations under subsections (b)(2), (b)(4), or (b)(6) and issue federal treatment determinations consistent with 40 CFR 141.83(b)(2), (b)(4), and (b)(6) if USEPA finds that certain conditions exist:

 

A)        the Agency fails to issue a treatment determination by the applicable deadline in subsection (a);

 

B)        the Agency abuses its discretion in a substantial number of instances or in instances affecting a substantial population; or

 

C)        the technical aspects of the Agency's determination would be indefensible in a federal enforcement action taken against the supplier.

 

BOARD NOTE:  This Section derives from 40 CFR 141.83.

 

(Source:  Amended at 47 Ill. Reg. 16486, effective November 2, 2023)