Source: https://www.law.cornell.edu/uscode/text/42/300g%E2%80%931
Timestamp: 2017-03-29 13:27:45
Document Index: 611226305

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42 U.S. Code § 300g–1 - National drinking water regulations | US Law | LII / Legal Information Institute
§ 300g–1.
Effective on June 19, 1986, each national interim or revised primary drinking water regulation promulgated under this section before June 19, 1986, shall be deemed to be a national primary drinking water regulation under subsection (b). No such regulation shall be required to comply with the standards set forth in subsection (b)(4) unless such regulation is amended to establish a different maximum contaminant level after June 19, 1986.
Whenever a national primary drinking water regulation is proposed under subsection (b) for any contaminant, the maximum contaminant level goal for such contaminant shall be proposed simultaneously. Whenever a national primary drinking water regulation is promulgated under subsection (b) for any contaminant, the maximum contaminant level goal for such contaminant shall be published simultaneously.
(1) Identification of contaminants for listing.—
(A)General authority.—The Administrator shall, in accordance with the procedures established by this subsection, publish a maximum contaminant level goal and promulgate a national primary drinking water regulation for a contaminant (other than a contaminant referred to in paragraph (2) for which a national primary drinking water regulation has been promulgated as of August 6, 1996) if the Administrator determines that—
(B) Regulation of unregulated contaminants.—
(i)Listing of contaminants for consideration.—
Not later than 18 months after August 6, 1996, and every 5 years thereafter, the Administrator, after consultation with the scientific community, including the Science Advisory Board, after notice and opportunity for public comment, and after considering the occurrence data base established under section 300j–4(g) of this title, shall publish a list of contaminants which, at the time of publication, are not subject to any proposed or promulgated national primary drinking water regulation, which are known or anticipated to occur in public water systems, and which may require regulation under this subchapter.
The unregulated contaminants considered under subclause (I) shall include, but not be limited to, substances referred to in section 9601(14) of this title, and substances registered as pesticides under the Federal Insecticide, Fungicide, and Rodenticide Act [7 U.S.C. 136 et seq.].
(ii)Determination to regulate.—
A determination to regulate a contaminant shall be based on findings that the criteria of clauses (i), (ii), and (iii) of subparagraph (A) are satisfied. Such findings shall be based on the best available public health information, including the occurrence data base established under section 300j–4(g) of this title.
(iii)Review.—
Each document setting forth the determination for a contaminant under clause (ii) shall be available for public comment at such time as the determination is published.
(C)Priorities.—
In selecting unregulated contaminants for consideration under subparagraph (B), the Administrator shall select contaminants that present the greatest public health concern. The Administrator, in making such selection, shall take into consideration, among other factors of public health concern, the effect of such contaminants upon subgroups that comprise a meaningful portion of the general population (such as infants, children, pregnant women, the elderly, individuals with a history of serious illness, or other subpopulations) that are identifiable as being at greater risk of adverse health effects due to exposure to contaminants in drinking water than the general population.
(D)Urgent threats to public health.—
The Administrator may promulgate an interim national primary drinking water regulation for a contaminant without making a determination for the contaminant under paragraph (4)(C), or completing the analysis under paragraph (3)(C), to address an urgent threat to public health as determined by the Administrator after consultation with and written response to any comments provided by the Secretary of Health and Human Services, acting through the director of the Centers for Disease Control and Prevention or the director of the National Institutes of Health. A determination for any contaminant in accordance with paragraph (4)(C) subject to an interim regulation under this subparagraph shall be issued, and a completed analysis meeting the requirements of paragraph (3)(C) shall be published, not later than 3 years after the date on which the regulation is promulgated and the regulation shall be repromulgated, or revised if appropriate, not later than 5 years after that date.
(E)Regulation.—
For each contaminant that the Administrator determines to regulate under subparagraph (B), the Administrator shall publish maximum contaminant level goals and promulgate, by rule, national primary drinking water regulations under this subsection. The Administrator shall propose the maximum contaminant level goal and national primary drinking water regulation for a contaminant not later than 24 months after the determination to regulate under subparagraph (B), and may publish such proposed regulation concurrent with the determination to regulate. The Administrator shall publish a maximum contaminant level goal and promulgate a national primary drinking water regulation within 18 months after the proposal thereof. The Administrator, by notice in the Federal Register, may extend the deadline for such promulgation for up to 9 months.
(F)Health advisories and other actions.—
The Administrator may publish health advisories (which are not regulations) or take other appropriate actions for contaminants not subject to any national primary drinking water regulation.
(2) Schedules and deadlines.—
(A)In general.—In the case of the contaminants listed in the Advance Notice of Proposed Rulemaking published in volume 47, Federal Register, page 9352, and in volume 48, Federal Register, page 45502, the Administrator shall publish maximum contaminant level goals and promulgate national primary drinking water regulations—
(B)Substitution of contaminants.—
If the Administrator identifies a drinking water contaminant the regulation of which, in the judgment of the Administrator, is more likely to be protective of public health (taking into account the schedule for regulation under subparagraph (A)) than a contaminant referred to in subparagraph (A), the Administrator may publish a maximum contaminant level goal and promulgate a national primary drinking water regulation for the identified contaminant in lieu of regulating the contaminant referred to in subparagraph (A). Substitutions may be made for not more than 7 contaminants referred to in subparagraph (A). Regulation of a contaminant identified under this subparagraph shall be in accordance with the schedule applicable to the contaminant for which the substitution is made.
(C)Disinfectants and disinfection byproducts.—
The Administrator shall promulgate an Interim Enhanced Surface Water Treatment Rule, a Final Enhanced Surface Water Treatment Rule, a Stage I Disinfectants and Disinfection Byproducts Rule, and a Stage II Disinfectants and Disinfection Byproducts Rule in accordance with the schedule published in volume 59, Federal Register, page 6361 (February 10, 1994), in table III.13 of the proposed Information Collection Rule. If a delay occurs with respect to the promulgation of any rule in the schedule referred to in this subparagraph, all subsequent rules shall be completed as expeditiously as practicable but no later than a revised date that reflects the interval or intervals for the rules in the schedule.
(3) Risk assessment, management, and communication.—
(A)Use of science in decisionmaking.—In carrying out this section, and, to the degree that an Agency action is based on science, the Administrator shall use—
(B)Public information.—In carrying out this section, the Administrator shall ensure that the presentation of information on public health effects is comprehensive, informative, and understandable. The Administrator shall, in a document made available to the public in support of a regulation promulgated under this section, specify, to the extent practicable—
(C) Health risk reduction and cost analysis.—
(i)Maximum contaminant levels.—When proposing any national primary drinking water regulation that includes a maximum contaminant level, the Administrator shall, with respect to a maximum contaminant level that is being considered in accordance with paragraph (4) and each alternative maximum contaminant level that is being considered pursuant to paragraph (5) or (6)(A), publish, seek public comment on, and use for the purposes of paragraphs (4), (5), and (6) an analysis of each of the following:
(ii)Treatment techniques.—
When proposing a national primary drinking water regulation that includes a treatment technique in accordance with paragraph (7)(A), the Administrator shall publish and seek public comment on an analysis of the health risk reduction benefits and costs likely to be experienced as the result of compliance with the treatment technique and alternative treatment techniques that are being considered, taking into account, as appropriate, the factors described in clause (i).
(iii)Approaches to measure and value benefits.—
The Administrator may identify valid approaches for the measurement and valuation of benefits under this subparagraph, including approaches to identify consumer willingness to pay for reductions in health risks from drinking water contaminants.
(iv)Authorization.—
There are authorized to be appropriated to the Administrator, acting through the Office of Ground Water and Drinking Water, to conduct studies, assessments, and analyses in support of regulations or the development of methods, $35,000,000 for each of fiscal years 1996 through 2003.
(4) Goals and standards.—
(A)Maximum contaminant level goals.—
(B)Maximum contaminant levels.—
Except as provided in paragraphs (5) and (6), each national primary drinking water regulation for a contaminant for which a maximum contaminant level goal is established under this subsection shall specify a maximum contaminant level for such contaminant which is as close to the maximum contaminant level goal as is feasible.
(C)Determination.—
(D)Definition of feasible.—
For the purposes of this subsection, the term “feasible” means feasible with the use of the best technology, treatment techniques and other means which the Administrator finds, after examination for efficacy under field conditions and not solely under laboratory conditions, are available (taking cost into consideration). For the purpose of this paragraph, granular activated carbon is feasible for the control of synthetic organic chemicals, and any technology, treatment technique, or other means found to be the best available for the control of synthetic organic chemicals must be at least as effective in controlling synthetic organic chemicals as granular activated carbon.
(E) Feasible technologies.—
Each national primary drinking water regulation which establishes a maximum contaminant level shall list the technology, treatment techniques, and other means which the Administrator finds to be feasible for purposes of meeting such maximum contaminant level, but a regulation under this subsection shall not require that any specified technology, treatment technique, or other means be used for purposes of meeting such maximum contaminant level.
(ii)List of technologies for small systems.—The Administrator shall include in the list any technology, treatment technique, or other means that is affordable, as determined by the Administrator in consultation with the States, for small public water systems serving—
(iii)List of technologies that achieve compliance.—
Except as provided in clause (v), not later than 2 years after August 6, 1996, and after consultation with the States, the Administrator shall issue a list of technologies that achieve compliance with the maximum contaminant level or treatment technique for each category of public water systems described in subclauses (I), (II), and (III) of clause (ii) for each national primary drinking water regulation promulgated prior to June 19, 1986.
(iv)Additional technologies.—
The Administrator may, at any time after a national primary drinking water regulation has been promulgated, supplement the list of technologies describing additional or new or innovative treatment technologies that meet the requirements of this paragraph for categories of small public water systems described in subclauses (I), (II), and (III) of clause (ii) that are subject to the regulation.
(v)Technologies that meet surface water treatment rule.—
Within one year after August 6, 1996, the Administrator shall list technologies that meet the Surface Water Treatment Rule for each category of public water systems described in subclauses (I), (II), and (III) of clause (ii).
(5) Additional health risk considerations.—
(A)In general.—Notwithstanding paragraph (4), the Administrator may establish a maximum contaminant level for a contaminant at a level other than the feasible level, if the technology, treatment techniques, and other means used to determine the feasible level would result in an increase in the health risk from drinking water by—
(B)Establishment of level.—If the Administrator establishes a maximum contaminant level or levels or requires the use of treatment techniques for any contaminant or contaminants pursuant to the authority of this paragraph—
(6) Additional health risk reduction and cost considerations.—
Notwithstanding paragraph (4), if the Administrator determines based on an analysis conducted under paragraph (3)(C) that the benefits of a maximum contaminant level promulgated in accordance with paragraph (4) would not justify the costs of complying with the level, the Administrator may, after notice and opportunity for public comment, promulgate a maximum contaminant level for the contaminant that maximizes health risk reduction benefits at a cost that is justified by the benefits.
(B)Exception.—The Administrator shall not use the authority of this paragraph to promulgate a maximum contaminant level for a contaminant, if the benefits of compliance with a national primary drinking water regulation for the contaminant that would be promulgated in accordance with paragraph (4) experienced by—
persons served by such other systems as are unlikely, based on information provided by the States, to receive a variance under section 300g–4(e) of this title (relating to small system variances);
The Administrator may not use the authority of this paragraph to establish a maximum contaminant level in a Stage I or Stage II national primary drinking water regulation (as described in paragraph (2)(C)) for contaminants that are disinfectants or disinfection byproducts, or to establish a maximum contaminant level or treatment technique requirement for the control of cryptosporidium. The authority of this paragraph may be used to establish regulations for the use of disinfection by systems relying on ground water sources as required by paragraph (8).
(D)Judicial review.—
The Administrator is authorized to promulgate a national primary drinking water regulation that requires the use of a treatment technique in lieu of establishing a maximum contaminant level, if the Administrator makes a finding that it is not economically or technologically feasible to ascertain the level of the contaminant. In such case, the Administrator shall identify those treatment techniques which, in the Administrator’s judgment, would prevent known or anticipated adverse effects on the health of persons to the extent feasible. Such regulations shall specify each treatment technique known to the Administrator which meets the requirements of this paragraph, but the Administrator may grant a variance from any specified treatment technique in accordance with section 300g–4(a)(3) of this title.
(8)Disinfection.—
At any time after the end of the 3-year period that begins on August 6, 1996, but not later than the date on which the Administrator promulgates a Stage II rulemaking for disinfectants and disinfection byproducts (as described in paragraph (2)(C)), the Administrator shall also promulgate national primary drinking water regulations requiring disinfection as a treatment technique for all public water systems, including surface water systems and, as necessary, ground water systems. After consultation with the States, the Administrator shall (as part of the regulations) promulgate criteria that the Administrator, or a State that has primary enforcement responsibility under section 300g–2 of this title, shall apply to determine whether disinfection shall be required as a treatment technique for any public water system served by ground water. The Administrator shall simultaneously promulgate a rule specifying criteria that will be used by the Administrator (or delegated State authorities) to grant variances from this requirement according to the provisions of sections 300g–4(a)(1)(B) and 300g–4(a)(3) of this title. In implementing section 300j–1(e) of this title the Administrator or the delegated State authority shall, where appropriate, give special consideration to providing technical assistance to small public water systems in complying with the regulations promulgated under this paragraph.
(9)Review and revision.—
(10)Effective date.—
A national primary drinking water regulation promulgated under this section (and any amendment thereto) shall take effect on the date that is 3 years after the date on which the regulation is promulgated unless the Administrator determines that an earlier date is practicable, except that the Administrator, or a State (in the case of an individual system), may allow up to 2 additional years to comply with a maximum contaminant level or treatment technique if the Administrator or State (in the case of an individual system) determines that additional time is necessary for capital improvements.
(12) Certain contaminants.—
(A) Arsenic.—
(i)Schedule and standard.—
Notwithstanding the deadlines set forth in paragraph (1), the Administrator shall promulgate a national primary drinking water regulation for arsenic pursuant to this subsection, in accordance with the schedule established by this paragraph.
(ii)Study plan.—
Not later than 180 days after August 6, 1996, the Administrator shall develop a comprehensive plan for study in support of drinking water rulemaking to reduce the uncertainty in assessing health risks associated with exposure to low levels of arsenic. In conducting such study, the Administrator shall consult with the National Academy of Sciences, other Federal agencies, and interested public and private entities.
(iii)Cooperative agreements.—
In carrying out the study plan, the Administrator may enter into cooperative agreements with other Federal agencies, State and local governments, and other interested public and private entities.
(iv)Proposed regulations.—
The Administrator shall propose a national primary drinking water regulation for arsenic not later than January 1, 2000.
(v)Final regulations.—
Not later than January 1, 2001, after notice and opportunity for public comment, the Administrator shall promulgate a national primary drinking water regulation for arsenic.
(vi)Authorization.—
There are authorized to be appropriated $2,500,000 for each of fiscal years 1997 through 2000 for the studies required by this paragraph.
(B) Sulfate.—
(i)Additional study.—
Prior to promulgating a national primary drinking water regulation for sulfate, the Administrator and the Director of the Centers for Disease Control and Prevention shall jointly conduct an additional study to establish a reliable dose-response relationship for the adverse human health effects that may result from exposure to sulfate in drinking water, including the health effects that may be experienced by groups within the general population (including infants and travelers) that are potentially at greater risk of adverse health effects as the result of such exposure. The study shall be conducted in consultation with interested States, shall be based on the best available, peer-reviewed science and supporting studies conducted in accordance with sound and objective scientific practices, and shall be completed not later than 30 months after August 6, 1996.
The Administrator shall include sulfate among the 5 or more contaminants for which a determination is made pursuant to paragraph (3)(B) not later than 5 years after August 6, 1996.
(iii)Proposed and final rule.—
Notwithstanding the deadlines set forth in paragraph (2), the Administrator may, pursuant to the authorities of this subsection and after notice and opportunity for public comment, promulgate a final national primary drinking water regulation for sulfate. Any such regulation shall include requirements for public notification and options for the provision of alternative water supplies to populations at risk as a means of complying with the regulation in lieu of a best available treatment technology or other means.
(13) Radon in drinking water.—
(A)National primary drinking water regulation.—
Notwithstanding paragraph (2), the Administrator shall withdraw any national primary drinking water regulation for radon proposed prior to August 6, 1996, and shall propose and promulgate a regulation for radon under this section, as amended by the Safe Drinking Water Act Amendments of 1996.
(B) Risk assessment and studies.—
(i)Assessment by nas.—
Prior to proposing a national primary drinking water regulation for radon, the Administrator shall arrange for the National Academy of Sciences to prepare a risk assessment for radon in drinking water using the best available science in accordance with the requirements of paragraph (3). The risk assessment shall consider each of the risks associated with exposure to radon from drinking water and consider studies on the health effects of radon at levels and under conditions likely to be experienced through residential exposure. The risk assessment shall be peer-reviewed.
(ii)Study of other measures.—
The Administrator shall arrange for the National Academy of Sciences to prepare an assessment of the health risk reduction benefits associated with various mitigation measures to reduce radon levels in indoor air. The assessment may be conducted as part of the risk assessment authorized by clause (i) and shall be used by the Administrator to prepare the guidance and approve State programs under subparagraph (G).
(iii)Other organization.—
If the National Academy of Sciences declines to prepare the risk assessment or studies required by this subparagraph, the Administrator shall enter into a contract or cooperative agreement with another independent, scientific organization to prepare such assessments or studies.
(C)Health risk reduction and cost analysis.—
Not later than 30 months after August 6, 1996, the Administrator shall publish, and seek public comment on, a health risk reduction and cost analysis meeting the requirements of paragraph (3)(C) for potential maximum contaminant levels that are being considered for radon in drinking water. The Administrator shall include a response to all significant public comments received on the analysis with the preamble for the proposed rule published under subparagraph (D).
(D)Proposed regulation.—
Not later than 36 months after August 6, 1996, the Administrator shall propose a maximum contaminant level goal and a national primary drinking water regulation for radon pursuant to this section.
(E)Final regulation.—
Not later than 12 months after the date of the proposal under subparagraph (D), the Administrator shall publish a maximum contaminant level goal and promulgate a national primary drinking water regulation for radon pursuant to this section based on the risk assessment prepared pursuant to subparagraph (B) and the health risk reduction and cost analysis published pursuant to subparagraph (C). In considering the risk assessment and the health risk reduction and cost analysis in connection with the promulgation of such a standard, the Administrator shall take into account the costs and benefits of control programs for radon from other sources.
(F)Alternative maximum contaminant level.—
If the maximum contaminant level for radon in drinking water promulgated pursuant to subparagraph (E) is more stringent than necessary to reduce the contribution to radon in indoor air from drinking water to a concentration that is equivalent to the national average concentration of radon in outdoor air, the Administrator shall, simultaneously with the promulgation of such level, promulgate an alternative maximum contaminant level for radon that would result in a contribution of radon from drinking water to radon levels in indoor air equivalent to the national average concentration of radon in outdoor air. If the Administrator promulgates an alternative maximum contaminant level under this subparagraph, the Administrator shall, after notice and opportunity for public comment and in consultation with the States, publish guidelines for State programs, including criteria for multimedia measures to mitigate radon levels in indoor air, to be used by the States in preparing programs under subparagraph (G). The guidelines shall take into account data from existing radon mitigation programs and the assessment of mitigation measures prepared under subparagraph (B).
(G) Multimedia radon mitigation programs.—
A State may develop and submit a multimedia program to mitigate radon levels in indoor air for approval by the Administrator under this subparagraph. If, after notice and the opportunity for public comment, such program is approved by the Administrator, public water systems in the State may comply with the alternative maximum contaminant level promulgated under subparagraph (F) in lieu of the maximum contaminant level in the national primary drinking water regulation promulgated under subparagraph (E).
(ii)Elements of programs.—
State programs may rely on a variety of mitigation measures including public education, testing, training, technical assistance, remediation grant and loan or incentive programs, or other regulatory or nonregulatory measures. The effectiveness of elements in State programs shall be evaluated by the Administrator based on the assessment prepared by the National Academy of Sciences under subparagraph (B) and the guidelines published by the Administrator under subparagraph (F).
(iii)Approval.—
The Administrator shall approve a State program submitted under this paragraph if the health risk reduction benefits expected to be achieved by the program are equal to or greater than the health risk reduction benefits that would be achieved if each public water system in the State complied with the maximum contaminant level promulgated under subparagraph (E). The Administrator shall approve or disapprove a program submitted under this paragraph within 180 days of receipt. A program that is not disapproved during such period shall be deemed approved. A program that is disapproved may be modified to address the objections of the Administrator and be resubmitted for approval.
(iv)Review.—
The Administrator shall periodically, but not less often than every 5 years, review each multimedia mitigation program approved under this subparagraph to determine whether it continues to meet the requirements of clause (iii) and shall, after written notice to the State and an opportunity for the State to correct any deficiency in the program, withdraw approval of programs that no longer comply with such requirements.
(v)Extension.—
If, within 90 days after the promulgation of an alternative maximum contaminant level under subparagraph (F), the Governor of a State submits a letter to the Administrator committing to develop a multimedia mitigation program under this subparagraph, the effective date of the national primary drinking water regulation for radon in the State that would be applicable under paragraph (10) shall be extended for a period of 18 months.
(vi)Local programs.—
In the event that a State chooses not to submit a multimedia mitigation program for approval under this subparagraph or has submitted a program that has been disapproved, any public water system in the State may submit a program for approval by the Administrator according to the same criteria, conditions, and approval process that would apply to a State program. The Administrator shall approve a multimedia mitigation program if the health risk reduction benefits expected to be achieved by the program are equal to or greater than the health risk reduction benefits that would result from compliance by the public water system with the maximum contaminant level for radon promulgated under subparagraph (E).
(14)Recycling of filter backwash.—
The Administrator shall promulgate a regulation to govern the recycling of filter backwash water within the treatment process of a public water system. The Administrator shall promulgate such regulation not later than 4 years after August 6, 1996, unless such recycling has been addressed by the Administrator’s Enhanced Surface Water Treatment Rule prior to such date.
(15) Variance technologies.—
(A)In general.—At the same time as the Administrator promulgates a national primary drinking water regulation for a contaminant pursuant to this section, the Administrator shall issue guidance or regulations describing the best treatment technologies, treatment techniques, or other means (referred to in this paragraph as “variance technology”) for the contaminant that the Administrator finds, after examination for efficacy under field conditions and not solely under laboratory conditions, are available and affordable, as determined by the Administrator in consultation with the States, for public water systems of varying size, considering the quality of the source water to be treated. The Administrator shall identify such variance technologies for public water systems serving—
The Administrator shall not identify any variance technology under this paragraph, unless the Administrator has determined, considering the quality of the source water to be treated and the expected useful life of the technology, that the variance technology is protective of public health.
(C)Additional information.—
The Administrator shall include in the guidance or regulations identifying variance technologies under this paragraph any assumptions supporting the public health determination referred to in subparagraph (B), where such assumptions concern the public water system to which the technology may be applied, or its source waters. The Administrator shall provide any assumptions used in determining affordability, taking into consideration the number of persons served by such systems. The Administrator shall provide as much reliable information as practicable on performance, effectiveness, limitations, costs, and other relevant factors including the applicability of variance technology to waters from surface and underground sources.
(D)Regulations and guidance.—
Not later than 2 years after August 6, 1996, and after consultation with the States, the Administrator shall issue guidance or regulations under subparagraph (A) for each national primary drinking water regulation promulgated prior to August 6, 1996, for which a variance may be granted under section 300g–4(e) of this title. The Administrator may, at any time after a national primary drinking water regulation has been promulgated, issue guidance or regulations describing additional variance technologies. The Administrator shall, not less often than every 7 years, or upon receipt of a petition supported by substantial information, review variance technologies identified under this paragraph. The Administrator shall issue revised guidance or regulations if new or innovative variance technologies become available that meet the requirements of this paragraph and achieve an equal or greater reduction or inactivation efficiency than the variance technologies previously identified under this subparagraph. No public water system shall be required to replace a variance technology during the useful life of the technology for the sole reason that a more efficient variance technology has been listed under this subparagraph.
(July 1, 1944, ch. 373, title XIV, § 1412, as added Pub. L. 93–523, § 2(a), Dec. 16, 1974, 88 Stat. 1662; amended Pub. L. 95–190, §§ 3(c), 12(a), Nov. 16, 1977, 91 Stat. 1394, 1398; Pub. L. 99–339, title I, § 101(a)–(c)(1), (d), (e), June 19, 1986, 100 Stat. 642–646; Pub. L. 104–182, title I, §§ 102(a), (c)(2), 103, 104(a), (c), 105–111(a), title V, § 501(a)(1), (2), Aug. 6, 1996, 110 Stat. 1617, 1621–1623, 1625–1631, 1691.)
The Federal Insecticide, Fungicide, and Rodenticide Act, referred to in subsec. (b)(1)(B)(i)(II), is act June 25, 1947, ch. 125, as amended generally by Pub. L. 92–516, Oct. 21, 1972, 86 Stat. 973, which is classified generally to subchapter II (§ 136 et seq.) of chapter 6 of Title 7, Agriculture. For complete classification of this Act to the Code, see Short Title note set out under section 136 of Title 7 and Tables.
1996—Subsec. (a)(3). Pub. L. 104–182, § 102(c)(2), struck out “paragraph (1), (2), or (3) of” before “subsection (b)” in two places.
Subsec. (b). Pub. L. 104–182, § 102(a), inserted heading.
Subsec. (b)(1), (2). Pub. L. 104–182, § 102(a), added pars. (1) and (2) and struck out former pars. (1) and (2) which related to publication of maximum contaminant level goals and promulgation of national primary drinking water regulations for certain listed contaminants or substituted contaminants.
Subsec. (b)(3). Pub. L. 104–182, § 103, added par. (3).
Pub. L. 104–182, § 102(a), struck out par. (3) which related to publication of maximum contaminant level goals and promulgation of national primary drinking water regulations for contaminants, other than those referred to in pars. (1) or (2), which may have an adverse effect on human health and are known to occur in public water systems.
Subsec. (b)(4). Pub. L. 104–182, § 104(a)(1), designated first sentence as subpar. (A), inserted par. and subpar. (A) headings, designated second sentence as subpar. (B), inserted subpar. (B) heading, substituted “Except as provided in paragraphs (5) and (6), each national” for “Each national” and “specify a maximum contaminant level” for “specify a maximum level”, and added subpar. (C).
Subsec. (b)(4)(D). Pub. L. 104–182, § 104(a)(2), (3), redesignated par. (5) as subpar. (D) of par. (4), inserted subpar. heading, and substituted “this paragraph” for “paragraph (4)”.
Subsec. (b)(4)(E). Pub. L. 104–182, §§ 104(a)(4), (5), 105, redesignated par. (6) as subpar. (E)(i) of par. (4), inserted subpar. and cl. headings, substituted “this subsection” for “this paragraph”, and added cls. (ii) to (v).
Subsec. (b)(5), (6). Pub. L. 104–182, § 104(a)(6), added pars. (5) and (6). Former pars. (5) and (6) redesignated subpars. (D) and (E)(i), respectively, of par. (4).
Subsec. (b)(7)(C)(v). Pub. L. 104–182, § 106, added cl. (v).
Subsec. (b)(8). Pub. L. 104–182, § 501(a)(2), substituted “section 300j–1(e)” for “section 300j–1(g)”.
Pub. L. 104–182, § 107, inserted heading, realigned margins, and substituted “At any time after the end of the 3-year period that begins on August 6, 1996, but not later than the date on which the Administrator promulgates a Stage II rulemaking for disinfectants and disinfection byproducts (as described in paragraph (2)(C)), the Administrator shall also promulgate national primary drinking water regulations requiring disinfection as a treatment technique for all public water systems, including surface water systems and, as necessary, ground water systems. After consultation with the States, the Administrator shall (as part of the regulations) promulgate criteria that the Administrator, or a State that has primary enforcement responsibility under section 300g–2 of this title, shall apply to determine whether disinfection shall be required as a treatment technique for any public water system served by ground water.” for “Not later than 36 months after June 19, 1986, the Administrator shall propose and promulgate national primary drinking water regulations requiring disinfection as a treatment technique for all public water systems.”
Subsec. (b)(9). Pub. L. 104–182, § 104(c), amended par. (9) generally. Prior to amendment, par. (9) read as follows: “National primary drinking water regulations shall be amended whenever changes in technology, treatment techniques, and other means permit greater protection of the health of persons, but in any event such regulations shall be reviewed at least once every 3 years. Such review shall include an analysis of innovations or changes in technology, treatment techniques or other activities that have occurred over the previous 3-year period and that may provide for greater protection of the health of persons. The findings of such review shall be published in the Federal Register. If, after opportunity for public comment, the Administrator concludes that the technology, treatment techniques, or other means resulting from such innovations or changes are not feasible within the meaning of paragraph (5), an explanation of such conclusion shall be published in the Federal Register.”
Subsec. (b)(10). Pub. L. 104–182, § 108, amended par. (10) generally. Prior to amendment, par. (10) read as follows: “National primary drinking water regulations promulgated under this subsection (and amendments thereto) shall take effect eighteen months after the date of their promulgation. Regulations under subsection (a) of this section shall be superseded by regulations under this subsection to the extent provided by the regulations under this subsection.”
Subsec. (b)(11). Pub. L. 104–182, § 501(a)(1), realigned margins.
Subsec. (b)(12). Pub. L. 104–182, § 109(a), added par. (12).
Subsec. (b)(13). Pub. L. 104–182, § 109(b), added par. (13).
Subsec. (b)(14). Pub. L. 104–182, § 110, added par. (14).
Subsec. (b)(15). Pub. L. 104–182, § 111(a), added par. (15).
1986—Subsec. (a). Pub. L. 99–339, § 101(a), amended subsec. (a) generally. Prior to amendment, subsec. (a) read as follows:
Subsec. (b)(1). Pub. L. 99–339, § 101(b), substituted provisions establishing standard setting schedules and deadlines for provisions relating to establishment of maximum contaminant levels and a list of contaminants with adverse effect but of undetermined levels.
Subsec. (b)(2). Pub. L. 99–339, § 101(b), substituted provisions authorizing the Administrator to substitute contaminants for those referred to in par. (1) and to supply a list of the contaminants proposed for substitution, with the decision of the Administrator to regulate such contaminant not subject to judicial review, for provisions which authorized the Administrator to publish in the Federal Register proposed revised national interim primary drinking water regulations and 180 days after the date of such proposed regulations to promulgate such revised regulations with modification as deemed appropriate.
Subsec. (b)(3). Pub. L. 99–339, § 101(b), substituted provisions directing the Administrator to publish maximum contaminant level goals and promulgate national primary drinking water regulations for contaminants, other than specified in par. (1) or (2), which may have an adverse effect on health and are known or anticipated to occur in public water systems, to establish an advisory working group to aid in establishing a list of such contaminants, and to publish, within a specified time, both proposed and final goals and regulations for provisions which required that revised national primary drinking water regulations specify a maximum contaminant level or require the use of treatment techniques for each contaminant, which level or technique was to be as close to the recommended level or technique as feasible, and defined the term “feasible”.
Subsec. (b)(4) to (11). Pub. L. 99–339, § 101(b), (c)(1), (d), added pars. (4) to (8), redesignated former pars. (4) to (6) as pars. (9) to (11), respectively, in par. (9) substituted “National” for “Revised National” and inserted provision that review include analysis, and publication in Federal Register, of innovations in technology, treatment techniques or other activities occurring during previous three years and their feasibility, and in par. (10) substituted “National” for “Revised National”.
Subsec. (e). Pub. L. 99–339, § 101(e), amended subsec. (e) generally, substituting provisions which relate to the request by the Administrator of comments by the Science Advisory Board prior to proposal of a maximum contaminant level goal and national primary drinking water regulation for provisions which related to study by the National Academy of Sciences to determine the maximum contaminant levels, report to Congress, and funding therefor.
1977—Subsec. (e)(2). Pub. L. 95–190 inserted provisions relating to revisions of the required report and cl. (G).
Pub. L. 106–377, § 1(a)(1) [title III], Oct. 27, 2000, 114 Stat. 1441, 1441A–41, provided in part: “That notwithstanding section 1412(b)(12)(A)(v) of the Safe Drinking Water Act, as amended [42 U.S.C. 300g–1(b)(12)(A)(v)], the Administrator shall promulgate a national primary drinking water regulation for arsenic not later than June 22, 2001.”
Pub. L. 104–182, title I, § 102(b), Aug. 6, 1996, 110 Stat. 1620, provided that: “The requirements of subparagraphs (C) and (D) of section 1412(b)(3) of the Safe Drinking Water Act [42 U.S.C. 300g–1(b)(3)(C), (D)] as in effect before the date of enactment of this Act [Aug. 6, 1996], and any obligation to promulgate regulations pursuant to such subparagraphs not promulgated as of the date of enactment of this Act, are superseded by the amendments made by subsection (a) [amending this section].”
Pub. L. 104–182, title I, § 104(b), Aug. 6, 1996, 110 Stat. 1625, provided that: “The Administrator of the Environmental Protection Agency may use the authority of section 1412(b)(5) of the Safe Drinking Water Act [42 U.S.C. 300g–1(b)(5)] (as amended by this Act) to promulgate the Stage I and Stage II Disinfectants and Disinfection Byproducts Rules as proposed in volume 59, Federal Register, page 38668 (July 29, 1994). The considerations used in the development of the July 29, 1994, proposed national primary drinking water regulation on disinfectants and disinfection byproducts shall be treated as consistent with such section 1412(b)(5) for purposes of such Stage I and Stage II rules.”