reglab/statecodes huggingface dataset:
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart F - MAXIMUM CONTAMINANT LEVELS (MCLs) AND MAXIMUM RESIDUAL DISINFECTANT LEVELS (MRDLs) › Section 611.300 - State-Only MCLs for Inorganic Chemical Contaminants

Current through Register Vol. 48, No. 28, July 12, 2024
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.
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart F - MAXIMUM CONTAMINANT LEVELS (MCLs) AND MAXIMUM RESIDUAL DISINFECTANT LEVELS (MRDLs) › Section 611.310 - State-Only Maximum Contaminant Levels (MCLs) for Organic Chemical Contaminants

Current through Register Vol. 48, No. 28, July 12, 2024
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.
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart F - MAXIMUM CONTAMINANT LEVELS (MCLs) AND MAXIMUM RESIDUAL DISINFECTANT LEVELS (MRDLs) › Section 611.312 - Maximum Contaminant Levels (MCLs) for Disinfection Byproducts (DBPs)

Current through Register Vol. 48, No. 28, July 12, 2024
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.
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart F - MAXIMUM CONTAMINANT LEVELS (MCLs) AND MAXIMUM RESIDUAL DISINFECTANT LEVELS (MRDLs) › Section 611.313 - Maximum Residual Disinfectant Levels (MRDLs)

Current through Register Vol. 48, No. 28, July 12, 2024
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.
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart F - MAXIMUM CONTAMINANT LEVELS (MCLs) AND MAXIMUM RESIDUAL DISINFECTANT LEVELS (MRDLs) › Section 611.320 - Turbidity (Repealed)

Current through Register Vol. 48, No. 28, July 12, 2024
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart F - MAXIMUM CONTAMINANT LEVELS (MCLs) AND MAXIMUM RESIDUAL DISINFECTANT LEVELS (MRDLs) › Section 611.325 - Microbiological Contaminants

Current through Register Vol. 48, No. 28, July 12, 2024
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.
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart F - MAXIMUM CONTAMINANT LEVELS (MCLs) AND MAXIMUM RESIDUAL DISINFECTANT LEVELS (MRDLs) › Section 611.330 - Maximum Contaminant Levels for Radionuclides

Current through Register Vol. 48, No. 28, July 12, 2024
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.
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart F - MAXIMUM CONTAMINANT LEVELS (MCLs) AND MAXIMUM RESIDUAL DISINFECTANT LEVELS (MRDLs) › Section 611.331 - Beta Particle and Photon Radioactivity (Repealed)

Current through Register Vol. 48, No. 28, July 12, 2024
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart G - LEAD AND COPPER › Section 611.350 - General Requirements

Current through Register Vol. 48, No. 28, July 12, 2024
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.
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart G - LEAD AND COPPER › Section 611.351 - Applicability of Corrosion Control

Current through Register Vol. 48, No. 28, July 12, 2024
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).
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart G - LEAD AND COPPER › Section 611.352 - Corrosion Control Treatment

Current through Register Vol. 48, No. 28, July 12, 2024
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.
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart G - LEAD AND COPPER › Section 611.353 - Source Water Treatment

Current through Register Vol. 48, No. 28, July 12, 2024
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)).
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart G - LEAD AND COPPER › Section 611.356 - Tap Water Monitoring for Lead and Copper

Current through Register Vol. 48, No. 28, July 12, 2024
a) Sampling Site Location
1) Selecting a Pool of Targeted Sampling
				Sites
A) Before the applicable date for
				beginning monitoring under subsection (d)(1), a supplier must identify a pool
				of targeted sampling sites complying with this Section based on the service
				line inventory the supplier developed under Section
				611.354(a).
B) The pool of targeted sampling sites must
				be large enough to ensure that the supplier can collect the number of lead and
				copper tap samples subsection (c) requires.
C) The supplier may not include among its
				sampling sites any with installed POE treatment devices, and the tap the
				supplier uses at a sampling site may not have a POU device designed to remove
				inorganic contaminants. The exceptions are that a supplier monitoring under
				Section 611.363(a)(3)(D)
				and a supplier using a POE or POU device for the primary drinking water tap to
				meet other primary and secondary drinking water standards may sample the
				connected tap if all service connections on the supplier's system have a POE or
				POU device to provide localized treatment to comply with those other drinking
				water standards.
D) A supplier
				monitoring under Section
				611.363(a)(3)(D)
				may not use lead and copper sampling results to fulfill the criteria for
				reduced monitoring under subsection (d)(4).
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart G - LEAD AND COPPER › Section 611.357 - Monitoring for Water Quality Parameters

Current through Register Vol. 48, No. 28, July 12, 2024
A large supplier or any small or mid-sized supplier exceeding
				  the lead or copper action level or a small or mid-sized supplier applying
				  corrosion control treatment and exceeding the lead trigger level must monitor
				  water quality parameters in addition to lead and copper under this
				  Section.
a) General Requirements
1) Sample Collection Methods
A) Using Tap Samples. In totality, all tap
				samples a supplier collects must represent water quality throughout the
				supplier's distribution system, considering the number of persons served, the
				different sources of water, the different treatment methods the supplier
				employs, and seasonal variability. Although a supplier may conveniently conduct
				tap sampling for water quality parameters at sites it uses for coliform
				sampling under Subpart L, if they meet the requirements of this section, the
				supplier need not do so, and the supplier need not perform tap sampling under
				this Section at taps it targeted for lead and copper sampling under Section
				611.356(a). The
				supplier must include sites it selects for tap samples under this Section in
				the site sample plan under Section
				611.356(a)(1).
				The supplier must update site sample plan before changing sampling
				locations.
B) Using Entry Point
				Samples. A supplier must collect samples at entry points to the distribution
				system from locations representing each source after treatment. If a supplier
				draws water from more than one source and combines the sources before
				distribution, the supplier must sample at an entry point to the distribution
				system during normal operating conditions (i.e., when the supplier uses water
				representing all sources).
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart G - LEAD AND COPPER › Section 611.358 - Monitoring for Lead and Copper in Source Water

Current through Register Vol. 48, No. 28, July 12, 2024
a) Sampling Location, Collection Methods, and
				Number of Samples
1) A supplier failing to
				meet the lead or copper action level on the basis of tap samples under Section
				611.356 must collect lead and
				copper source water samples under specific requirements for sample location,
				number of samples, and collection methods:
A)
				A groundwater supplier must take a minimum of one sample at every entry point
				to the distribution system after the supplier applies any treatment or in the
				distribution system at a point representing each source after treatment (a
				"sampling point"). The supplier must take one sample at the same sampling point
				unless conditions make another sampling point more closely represent a source
				or treatment plant.
B) A surface
				water supplier must take a minimum of one sample at every entry point to the
				distribution system after treatment or in the distribution system at a sampling
				point. The supplier must take each sample at the same sampling point unless
				conditions make another sampling point more closely represent a source or
				treatment plant.
BOARD NOTE: For this subsection (a)(1)(B), a system using a
				  combination of surface water and groundwater sources is a surface water
				  system.
C) If a supplier
				draws water from more than one source and combines the sources before
				distribution, the supplier must sample at an entry point to the distribution
				system during periods of normal operating conditions (i.e., when water
				represents all sources being used).
D) The Agency may issue a SEP reducing the
				total number of samples a supplier must analyze by allowing the use of
				compositing. Certified laboratory personnel must composite the samples. A
				composite sample may include a maximum of five samples. However, if the lead
				concentration in the composite sample is greater than or equal to
				0.001 mg/L or the copper
				concentration is greater than or equal to
				0.160 mg/L, the supplier must do
				either of two things:
i) The supplier must
				take and analyze a follow-up sample within 14 days at each sampling point
				included in the composite sample; or
ii) If duplicate samples or sufficient
				volumes of the original samples are available from each sampling point the
				certified laboratory used in the composite sample, the supplier may use those
				instead of resampling.
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart G - LEAD AND COPPER › Section 611.359 - Analytical Methods

Current through Register Vol. 48, No. 28, July 12, 2024
The supplier must conduct analyses for lead, copper, pH,
				  alkalinity, orthophosphate, and silica, using the methods in Section
				  611.611(a).
a) Only a certified laboratory in one of the
				categories in Section
				611.490(a) may
				conduct analyses for lead and copper to demonstrate that a supplier complies
				with this Subpart G. To obtain certification for conducting analyses for lead
				and copper, a laboratory must fulfill specific conditions:
1) The laboratory must analyze lead- and
				copper-containing performance evaluation samples provided by USEPA or the
				Agency at least once a year by each method for which the laboratory seeks
				certification;
2) The laboratory
				must achieve certain quantitative acceptance limits:
A) For lead: ±30 percent of the actual
				amount in the performance evaluation sample when the actual amount is greater
				than or equal to 0.005 mg/L (the PQL for lead is
				0.005 mg/L);
B) For copper: ±10 percent of the
				actual amount in the performance evaluation sample when the actual amount is
				greater than or equal to
				0.050 mg/L (the PQL for copper
				is 0.050 mg/L);
3) The laboratory must achieve
				method detection limit (MDL) for lead of
				0.001 mg/L using the procedures
				in 35 Ill. Adm. Code 186 and appendix B to
				40 CFR
				136: "Definition and Procedure for the
				Determination of the Method Detection Limit - Revision
				1.11", incorporated by reference
				in Section 611.102(c);
				and
4) The laboratory must have
				current certification to perform analyses under the specifications this
				subsection (a) describes.
BOARD NOTE: This subsection (a) derives from
				  40 CFR
				  141.89(a) and (a)(1).
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart G - LEAD AND COPPER › Section 611.361 - Recordkeeping

Current through Register Vol. 48, No. 28, July 12, 2024
Any supplier subject to this Subpart G must retain original
				  records of all sampling data and analyses, reports, surveys, letters,
				  evaluations, schedules, Agency determinations, and any other information
				  Sections 611.351 through
				  611.360,
				  611.362, and
				  611.363 require. Each supplier
				  must retain the records this Section requires on its premises for at least 12
				  years.
BOARD NOTE: This Section derives from
					 40 CFR
					 141.91.
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart G - LEAD AND COPPER › Section 611.363 - Small Supplier Compliance Flexibility

Current through Register Vol. 48, No. 28, July 12, 2024
This section gives compliance flexibility options applying to
				  a small CWS supplier serving 10,000 or fewer persons or an NTNCWS supplier. A
				  CWS or NTNCWS supplier having corrosion control treatment in place must
				  continue operating and maintaining OCCT until the Agency issues a SEP
				  determining this no longer necessary, and the supplier must comply with any
				  conditions the Agency are appropriate before implementing an Agency-approved
				  compliance flexibility option under this Section.
a) A small CWS or NTNCWS supplier exceeding
				the lead trigger level but neither the lead nor copper action level must
				collect samples for water quality parameters under Section
				611.357(b),
				evaluate compliance flexibility options under subsections (a)(1) through
				(a)(4), and recommend a compliance flexibility option to the Agency within six
				months of the end of the tap sampling period in which the exceedance occurred.
				When recommending to the Agency, the supplier must comply with Section
				611.382(a)(1).
				The Agency must either approve the supplier's recommended compliance
				flexibility option or designate an alternative under subsections (a)(1) through
				(a)(4) within six months after the supplier recommends an option. If the
				supplier subsequently exceeds the lead action level, the supplier must
				implement the Agency-approved compliance flexibility option under subsection
				(b). A supplier must select one from among specific compliance flexibility
				options:
1) Replacing Lead Service Lines. A
				supplier must implement a program for full lead service line replacement on an
				Agency-approved schedule not exceeding 15 years. The supplier must begin
				replacing lead service lines within one year after the Agency approves or
				designates this compliance flexibility option.
A) The supplier must replace lead service
				lines complying with Section
				611.354(e) and (g)(4),
				(g)(8), and (g)(9).
B) The supplier must continue replacing lead
				service lines even if the supplier's 90th percentile lead concentration is at
				or below the lead action level in future tap monitoring cycles.
C) The supplier must have no lead, galvanized
				requiring replacement, or lead status unknown service lines in its inventory
				before ending its lead service line replacement program.
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart I - DISINFECTANT RESIDUALS, DISINFECTION BYPRODUCTS, AND DISINFECTION BYPRODUCT PRECURSORS › Section 611.380 - General Requirements

Current through Register Vol. 48, No. 28, July 12, 2024
a)
				This Subpart I Constitutes NPDWRs
1) This
				Subpart I establishes standards for a CWS supplier or an NTNCWS supplier adding
				a chemical disinfectant to its water in any part of the treatment process
				modifying its practices to comply with MCLs and MRDLs in Sections
				611.312 and
				611.313, respectively, and
				complying with the treatment technique requirements for DBP precursors in
				Section 611.385.
2) This Subpart I establishes standards for a
				transient non-CWS supplier using chlorine dioxide as a disinfectant or oxidant
				modifying its practices to comply with the MRDL for chlorine dioxide in Section
				611.313.
3) MCLs for TTHM and HAA5
				and treatment technique requirements for DBP precursors limit the levels of
				known and unknown DBPs that may have adverse health effects. These DBPs may
				include chloroform, bromodichloromethane, dibromochloromethane, bromoform,
				dichloroacetic acid, and trichloroacetic acid.
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart I - DISINFECTANT RESIDUALS, DISINFECTION BYPRODUCTS, AND DISINFECTION BYPRODUCT PRECURSORS › Section 611.381 - Analytical Requirements

Current through Register Vol. 48, No. 28, July 12, 2024
a) A
				supplier must use only the analytical methods this Section specifies, each
				incorporated by reference in Section
				611.102, or alternative methods
				that the Agency approved under Section
				611.480 to demonstrate that it
				complies with this Subpart I and Subparts W and Y.
b) Disinfection Byproducts (DBPs)
1) Methods for Disinfection Byproducts (DBPs)
A) TTHM
i)
				By Purge and Trap, Gas Chromatography, Electrolytic Conductivity Detector, and
				Photoionization Detector. USEPA
				502.2(95). If
				TTHMs are the only analytes the laboratory measures in the sample, it needs not
				use a photoionization detector.
ii)
				By Purge and Trap, Gas Chromatography-Mass Spectrometer. USEPA
				524.2 (95) or
				USEPA 524.3 (09), or
				USEPA 524.4
				(13).
iii) By Liquid-Liquid Extraction, Gas
				Chromatography, Electron Capture Detector. USEPA
				551.1
				(95).
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart I - DISINFECTANT RESIDUALS, DISINFECTION BYPRODUCTS, AND DISINFECTION BYPRODUCT PRECURSORS › Section 611.382 - Monitoring Requirements

Current through Register Vol. 48, No. 28, July 12, 2024
a)
				General Requirements
1) A supplier must take
				all samples during normal operating conditions.
2) A supplier may consider multiple wells
				drawing water from a single aquifer as one treatment plant for determining the
				minimum number of TTHM and HAA5 samples required with Agency
				approval.
3) Failure to monitor in
				accordance with the monitoring plan required under subsection (f) is a
				monitoring violation.
4) Where
				compliance is based on a running annual average of monthly or quarterly samples
				or averages and the supplier's failure to monitor makes it impossible to
				determine compliance with MCLs or MRDLs, this failure to monitor will be
				treated as a violation for the entire period covered by the annual
				average.
5) A supplier must use
				only data collected under the provisions of this Subpart I to qualify for
				reduced monitoring.
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart I - DISINFECTANT RESIDUALS, DISINFECTION BYPRODUCTS, AND DISINFECTION BYPRODUCT PRECURSORS › Section 611.383 - Compliance Requirements

Current through Register Vol. 48, No. 28, July 12, 2024
a)
				General Requirements
1) Where compliance is
				based on a running annual average of monthly or quarterly samples or averages
				and the supplier fails to monitor for TTHM, HAA5, or bromate, this failure to
				monitor will be treated as a monitoring violation for the entire period covered
				by the annual average. Where compliance is based on a running annual average of
				monthly or quarterly samples or averages and the supplier's failure to monitor
				makes it impossible to determine compliance with the MRDL for chlorine or
				chloramines, this failure to monitor will be treated as a monitoring violation
				for the entire period covered by the annual average.
2) All samples taken and analyzed under the
				provisions of this Subpart I must be included in determining compliance, even
				if that number is greater than the minimum required.
3) If, during the first year of monitoring
				under Section
				611.382,
				any individual quarter's average will cause the running annual average of that
				supplier to exceed the MCL for TTHM, HAA5, or bromate or the MRDL for chlorine
				or chloramine, the supplier is out of compliance at the end of that
				quarter.
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart I - DISINFECTANT RESIDUALS, DISINFECTION BYPRODUCTS, AND DISINFECTION BYPRODUCT PRECURSORS › Section 611.384 - Reporting and Recordkeeping Requirements

Current through Register Vol. 48, No. 28, July 12, 2024
a) A supplier required to sample quarterly or
				more frequently must report to the Agency within ten days after the end of each
				quarter in which samples were collected, notwithstanding the provisions of
				Section
				611.840. A supplier
				required to sample less frequently than quarterly must report to the Agency
				within ten days after the end of each monitoring period in which samples were
				collected.
b) Disinfection
				Byproducts (DBPs). A supplier must report the following specified information:
1) A supplier that monitors for TTHMs and
				HAA5 under the requirements of Section
				611.382(b)
				on a quarterly or more frequently basis must report the following:
A) The number of samples taken during the
				last quarter;
B) The location,
				date, and result of each sample taken during the last quarter;
C) The arithmetic average of all samples
				taken over the last quarter;
D) The
				annual arithmetic average of the quarterly arithmetic averages of this Section
				for the last four quarters; and
E)
				Whether, based on Section
				611.383(b)(1),
				the MCL was violated.
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart K - GENERAL MONITORING AND ANALYTICAL REQUIREMENTS › Section 611.480 - Alternative Analytical Techniques

Current through Register Vol. 48, No. 28, July 12, 2024
The Agency must approve, by a SEP, an alternative analytical
				  technique if it determines that USEPA has approved the method as an alternative
				  method by adding it to 40CFR 141 and the Board has not incorporated the federal
				  approval into this Part 611. The Agency must not approve an alternative
				  analytical technique without the concurrence of USEPA. The use of the
				  alternative analytical technique must not decrease the frequency of monitoring
				  required by this Part.
BOARD NOTE: Derived from
					 40 CFR
					 141.27
					 (2007).
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart K - GENERAL MONITORING AND ANALYTICAL REQUIREMENTS › Section 611.490 - Certified Laboratories

Current through Register Vol. 48, No. 28, July 12, 2024
a) For
				the purpose of determining compliance with Subparts G, K through O, Q, and S,
				samples will be considered only if they have been analyzed by one of the
				following:
1) A laboratory certified under
				Section 4(o) of the Act;
2) A
				laboratory certified by USEPA;
3)
				When no laboratory has been certified under subsection (a)(1) to analyze a
				particular contaminant, a laboratory certified, registered, accredited,
				licensed, or otherwise approved by another state with primary enforcement
				responsibility, or an agency of the federal government, unless the Agency has,
				by written notice, informed the supplier that a particular laboratory or
				laboratories may not be used; or
4)
				For measurements of alkalinity, calcium, conductivity, disinfectant residual,
				orthophosphate, silica, turbidity, free chlorine residual, temperature, and pH,
				a person under the supervision of a certified operator (35 Ill. Adm. Code
				603.103
				).
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart K - GENERAL MONITORING AND ANALYTICAL REQUIREMENTS › Section 611.500 - Consecutive PWSs

Current through Register Vol. 48, No. 28, July 12, 2024
When a PWS supplies water to one or more other PWSs, the
				  Agency must modify the monitoring requirements imposed by this Part to the
				  extent that the interconnection of the PWSs justifies treating them as a single
				  PWS for monitoring purposes. Any modified monitoring must be conducted under a
				  schedule specified by a SEP. The Agency must not approve such modified
				  monitoring without the concurrence of USEPA.
BOARD NOTE: Derived from
					 40 CFR
					 141.29
					 (2002).
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart L - MICROBIOLOGICAL MONITORING AND ANALYTICAL REQUIREMENTS › Section 611.526 - Analytical Methodology (Repealed)

Current through Register Vol. 48, No. 28, July 12, 2024
BOARD NOTE: Derived from
					 40 CFR
					 141.21(f) and appendix A to
					 40 CFR 141(2014).
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart L - MICROBIOLOGICAL MONITORING AND ANALYTICAL REQUIREMENTS › Section 611.528 - Transition from Subpart L to Subpart AA Requirements (Repealed)

Current through Register Vol. 48, No. 28, July 12, 2024
BOARD NOTE: Derived from
					 40 CFR
					 141.21(h)
					 (2013).
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart L - MICROBIOLOGICAL MONITORING AND ANALYTICAL REQUIREMENTS › Section 611.533 - Filtered PWSs

Current through Register Vol. 48, No. 28, July 12, 2024
A supplier using a surface water source or a groundwater
				  source under the direct influence of surface water and providing filtration
				  treatment must monitor in accordance with this Section.
a) The supplier must perform turbidity
				measurements Section 611.250 requires on
				representative samples of the PWS's filtered water every four hours (or more
				frequently) when the supplier serves water to the public. A supplier may
				substitute continuous turbidity monitoring for grab sample monitoring if it
				validates the continuous measurement for accuracy on a regular basis using a
				protocol the Agency approved in a SEP. For a supplier using slow sand
				filtration or filtration treatment other than conventional treatment, direct
				filtration, or diatomaceous earth filtration, the Agency must reduce the
				sampling frequency to once per day in a SEP if the Agency determines that less
				frequent monitoring is sufficient to indicate effective filtration performance.
				For a supplier serving 500 or fewer persons, the Agency must reduce the
				turbidity sampling frequency to once per day in a SEP if the Agency determines
				that less frequent monitoring is sufficient to indicate effective filtration
				performance regardless of the type of filtration treatment used.
b) RDC Entering Distribution System
1) Suppliers Serving More Than 3300 Persons.
				The supplier must continuously monitor the RDC of the water entering the
				distribution system, and the supplier must record the lowest value each day,
				except that the supplier may conduct grab sampling every four hours in lieu of
				continuous monitoring if there is a failure in the continuous monitoring
				equipment, but not for more than five working days following the equipment
				failure.
2) Suppliers Serving 3,300
				or Fewer Persons. The supplier may take grab samples in lieu of providing
				continuous monitoring on an ongoing basis at the frequencies each day Table C
				prescribes. If at any time the RDC falls below
				0.2 mg/L in a system using grab
				sampling in lieu of continuous monitoring, the supplier must take a grab sample
				every four hours until RDC is equal to or greater than
				0.2 mg/L.
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart N - INORGANIC MONITORING AND ANALYTICAL REQUIREMENTS › Section 611.591 - Violation of a State-Only MCL

Current through Register Vol. 48, No. 28, July 12, 2024
This Section applies to State-only MCLs. If the result of
				  analysis under Section
				  611.612 indicates that the level
				  of any contaminant exceeds the State-only MCL, the CWS supplier must take
				  certain actions:
a) Report to the
				Agency within seven days and initiate three additional analyses at the same
				sampling point within one month;
b)
				Notify the Agency and give public notice, as Subpart T specifies, if the
				average of four analyses exceeds the State-only MCL; and
c) After giving public notice, monitor at a
				frequency the Agency designates in a SEP. The supplier must continue monitoring
				until the results do not exceed the State-only MCL in two consecutive samples
				or until the effective date of a monitoring schedule the Board issues as a
				condition of a variance, adjusted standard, or enforcement action.
BOARD NOTE: This is an additional State requirement.
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart N - INORGANIC MONITORING AND ANALYTICAL REQUIREMENTS › Section 611.592 - Frequency of State Monitoring

Current through Register Vol. 48, No. 28, July 12, 2024
This Section applies to State-only MCLs marked as "additional
				  State requirements" in Section
				  611.300 and for which there are
				  no specific monitoring, reporting, or public notice requirements among the
				  NPDWRs.
a) A CWS supplier using
				surface water sources must repeat analyses for the State-only MCLs at yearly
				intervals.
b) A CWS supplier using
				groundwater sources must repeat analyses for the State-only MCLs at three-year
				intervals.
BOARD NOTE: This is an additional State requirement.
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart N - INORGANIC MONITORING AND ANALYTICAL REQUIREMENTS › Section 611.601 - Monitoring Frequency

Current through Register Vol. 48, No. 28, July 12, 2024
Monitoring must be conducted as follows:
a) Required Sampling
1) Each supplier must take a minimum of one
				sample at each sampling point at the times required by Section
				611.610
				beginning in the initial compliance period.
2) Each sampling point must produce samples
				that are representative of the water from each source after treatment or from
				each treatment plant, as required by subsection (b). The total number of
				sampling points must be representative of the water delivered to users
				throughout the PWS.
3) The supplier
				must take each sample at the same sampling point unless conditions make another
				sampling point more representative of each source or treatment plant and the
				Agency has granted a SEP under subsection (b)(5).
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart N - INORGANIC MONITORING AND ANALYTICAL REQUIREMENTS › Section 611.602 - Asbestos Monitoring Frequency

Current through Register Vol. 48, No. 28, July 12, 2024
The frequency of monitoring conducted to determine compliance
				  with the MCL for asbestos in Section
				  611.301
				  is as follows:
a) Unless the Agency
				has determined under subsection (c) that the PWS is not vulnerable, each CWS
				and NTNCWS supplier must monitor for asbestos during the first compliance
				period of each compliance cycle.
b)
				CWS suppliers may apply to the Agency, by way of an application for a SEP, for
				a determination that the CWS is not vulnerable based on consideration of the
				criteria listed in subsection (c).
c) The Agency must determine that the CWS is
				"not vulnerable" if the CWS is not vulnerable to contamination either from
				asbestos in its source water, from corrosion of asbestos-cement pipe, or from
				both, based on a consideration of the following factors:
1) Potential asbestos contamination of the
				water source; and
2) The use of
				asbestos-cement pipe for finished water distribution and the corrosive nature
				of the water.
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart N - INORGANIC MONITORING AND ANALYTICAL REQUIREMENTS › Section 611.603 - Inorganic Monitoring Frequency

Current through Register Vol. 48, No. 28, July 12, 2024
The frequency of monitoring conducted to determine compliance
				  with the revised MCLs in Section
				  611.301
				  for antimony, arsenic, barium, beryllium, cadmium, chromium, cyanide, fluoride,
				  mercury, nickel, selenium, and thallium is as follows:
a) Suppliers must take samples at each
				sampling point, beginning in the initial compliance period, as follows:
1) For a GWS supplier: at least one sample
				during each compliance period;
2)
				For an SWS or a mixed system supplier: at least one sample each year.
BOARD NOTE: Derived from
				  40 CFR
				  141.23(c)(1).
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart N - INORGANIC MONITORING AND ANALYTICAL REQUIREMENTS › Section 611.604 - Nitrate Monitoring

Current through Register Vol. 48, No. 28, July 12, 2024
Each supplier must monitor to determine compliance with the
				  MCL for nitrate in Section
				  611.301.
a) Suppliers must monitor at the following
				frequencies:
1) CWSs and NTNCWSs
A) GWSs: annually;
B) SWSs and mixed systems: quarterly.
BOARD NOTE: Derived from
				  40 CFR
				  141.23(d)(1).
Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart N - INORGANIC MONITORING AND ANALYTICAL REQUIREMENTS › Section 611.605 - Nitrite Monitoring

Current through Register Vol. 48, No. 28, July 12, 2024
Each supplier must monitor to determine compliance with the
				  MCL for nitrite in Section
				  611.301.
a) This subsection (a) corresponds with
				40 CFR
				141.23(e)(1), which was
				applicable only until a date now past. This statement maintains consistency
				with USEPA rules.
b) This
				subsection corresponds with
				40 CFR
				141.23(e)(2), a provision by
				which USEPA refers to state requirements that do not exist in Illinois. This
				statement maintains structural consistency with USEPA rules.
c) Monitoring Frequency
1) Quarterly Monitoring
A) A supplier that has any one sample in
				which the concentration is equal to or greater than 50 percent of the MCL must
				initiate quarterly monitoring during the next quarter.
B) A supplier required to begin quarterly
				monitoring under subsection (c)(1)(A) must continue on a quarterly basis for a
				minimum of one year following any one sample exceeding the 50 percent of the
				MCL, after which the supplier may discontinue quarterly monitoring under
				subsection (c)(2).