§ 300g–3. Enforcement of drinking water regulations

Type Statute
Publication 2026-03-26
State In force
Department United States Congress
Source OLRC
Reform history JSON API
§ 300g–3. Enforcement of drinking water regulations

(a) Notice to State and public water system; issuance of administrative order; civil action

(1)

(A) Whenever the Administrator finds during a period during which a State has primary enforcement responsibility for public water systems (within the meaning of section 300g–2(a) of this title) that any public water system—

he shall so notify the State and such public water system and provide such advice and technical assistance to such State and public water system as may be appropriate to bring the system into compliance with the requirement by the earliest feasible time.

(i) for which a variance under section 300g–4 or an exemption under section 300g–5 of this title is not in effect, does not comply with any applicable requirement, or

(ii) for which a variance under section 300g–4 or an exemption under section 300g–5 of this title is in effect, does not comply with any schedule or other requirement imposed pursuant thereto,

(B) If, beyond the thirtieth day after the Administrator’s notification under subparagraph (A), the State has not commenced appropriate enforcement action, the Administrator shall issue an order under subsection (g) requiring the public water system to comply with such applicable requirement or the Administrator shall commence a civil action under subsection (b).

(2) Enforcement in nonprimacy states.—

(A) In general.— If, on the basis of information available to the Administrator, the Administrator finds, with respect to a period in which a State does not have primary enforcement responsibility for public water systems, that a public water system in the State—

the Administrator shall issue an order under subsection (g) requiring the public water system to comply with the requirement, or commence a civil action under subsection (b).

(i) for which a variance under section 300g–4 of this title or an exemption under section 300g–5 of this title is not in effect, does not comply with any applicable requirement; or

(ii) for which a variance under section 300g–4 of this title or an exemption under section 300g–5 of this title is in effect, does not comply with any schedule or other requirement imposed pursuant to the variance or exemption;

(B) Notice.— If the Administrator takes any action pursuant to this paragraph, the Administrator shall notify an appropriate local elected official, if any, with jurisdiction over the public water system of the action prior to the time that the action is taken.

(b) Judicial determinations in appropriate Federal district courts; civil penalties, separate violations The Administrator may bring a civil action in the appropriate United States district court to require compliance with any applicable requirement, with an order issued under subsection (g), or with any schedule or other requirement imposed pursuant to a variance or exemption granted under section 300g–4 or 300g–5 of this title if—

The court may enter, in an action brought under this subsection, such judgement as protection of public health may require, taking into consideration the time necessary to comply and the availability of alternative water supplies; and, if the court determines that there has been a violation of the regulation or schedule or other requirement with respect to which the action was brought, the court may, taking into account the seriousness of the violation, the population at risk, and other appropriate factors, impose on the violator a civil penalty of not to exceed $25,000 for each day in which such violation occurs.

(1) authorized under paragraph (1) or (2) of subsection (a), or

(2) if requested by (A) the chief executive officer of the State in which is located the public water system which is not in compliance with such regulation or requirement, or (B) the agency of such State which has jurisdiction over compliance by public water systems in the State with national primary drinking water regulations or State drinking water regulations.

(c) Notice to States, the Administrator, and persons served

(1) In general Each owner or operator of a public water system shall give notice of each of the following to the persons served by the system:

(A) Notice of any failure on the part of the public water system to—

(i) comply with an applicable maximum contaminant level or treatment technique requirement of, or a testing procedure prescribed by, a national primary drinking water regulation; or

(ii) perform monitoring required by section 300j–4(a) of this title.

(B) If the public water system is subject to a variance granted under subsection (a)(1)(A), (a)(2), or (e) of section 300g–4 of this title for an inability to meet a maximum contaminant level requirement or is subject to an exemption granted under section 300g–5 of this title, notice of—

(i) the existence of the variance or exemption; and

(ii) any failure to comply with the requirements of any schedule prescribed pursuant to the variance or exemption.

(C) Notice of the concentration level of any unregulated contaminant for which the Administrator has required public notice pursuant to paragraph (2)(F).

(D) Notice that the public water system exceeded the lead action level under section 141.80(c) of title 40, Code of Federal Regulations (or a prescribed level of lead that the Administrator establishes for public education or notification in a successor regulation promulgated pursuant to section 300g–1 of this title).

(2) Form, manner, and frequency of notice

(A) In general The Administrator shall, by regulation, and after consultation with the States, prescribe the manner, frequency, form, and content for giving notice under this subsection. The regulations shall—

(i) provide for different frequencies of notice based on the differences between violations that are intermittent or infrequent and violations that are continuous or frequent; and

(ii) take into account the seriousness of any potential adverse health effects that may be involved.

(B) State requirements

(i) In general A State may, by rule, establish alternative notification requirements—

(I) with respect to the form and content of notice given under and in a manner in accordance with subparagraph (C); and

(II) with respect to the form and content of notice given under subparagraph (E).

(ii) Contents The alternative requirements shall provide the same type and amount of information as required pursuant to this subsection and regulations issued under subparagraph (A).

(iii) Relationship to section 300g–2 Nothing in this subparagraph shall be construed or applied to modify the requirements of section 300g–2 of this title.

(C) Notice of violations or exceedances with potential to have serious adverse effects on human health Regulations issued under subparagraph (A) shall specify notification procedures for each violation, and each exceedance described in paragraph (1)(D), by a public water system that has the potential to have serious adverse effects on human health as a result of short-term exposure. Each notice of violation or exceedance provided under this subparagraph shall—

(i) be distributed as soon as practicable, but not later than 24 hours, after the public water system learns of the violation or exceedance;

(ii) provide a clear and readily understandable explanation of—

(I) the violation or exceedance;

(II) the potential adverse effects on human health;

(III) the steps that the public water system is taking to correct the violation or exceedance; and

(IV) the necessity of seeking alternative water supplies until the violation or exceedance is corrected;

(iii) be provided to the Administrator and the head of the State agency that has primary enforcement responsibility under section 300g–2 of this title, as applicable, as soon as practicable, but not later than 24 hours after the public water system learns of the violation or exceedance; and

(iv) as required by the State agency in general regulations of the State agency, or on a case-by-case basis after the consultation referred to in clause (iii), considering the health risks involved—

(I) be provided to appropriate media, including broadcast media;

(II) be prominently published in a newspaper of general circulation serving the area not later than 1 day after distribution of a notice pursuant to clause (i) or the date of publication of the next issue of the newspaper; or

(III) be provided by posting or door-to-door notification.

(D) Notice by the Administrator If the State with primary enforcement responsibility or the owner or operator of a public water system has not issued a notice under subparagraph (C) for an exceedance of the lead action level under section 141.80(c) of title 40, Code of Federal Regulations (or a prescribed level of lead that the Administrator establishes for public education or notification in a successor regulation promulgated pursuant to section 300g–1 of this title) that has the potential to have serious adverse effects on human health as a result of short-term exposure, not later than 24 hours after the Administrator is notified of the exceedance, the Administrator shall issue the required notice under that subparagraph.

(E) Written notice

(i) In general Regulations issued under subparagraph (A) shall specify notification procedures for violations other than the violations covered by subparagraph (C). The procedures shall specify that a public water system shall provide written notice to each person served by the system by notice (I) in the first bill (if any) prepared after the date of occurrence of the violation, (II) in an annual report issued not later than 1 year after the date of occurrence of the violation, or (III) by mail or direct delivery as soon as practicable, but not later than 1 year after the date of occurrence of the violation.

(ii) Form and manner of notice The Administrator shall prescribe the form and manner of the notice to provide a clear and readily understandable explanation of the violation, any potential adverse health effects, and the steps that the system is taking to seek alternative water supplies, if any, until the violation is corrected.

(F) Unregulated contaminants The Administrator may require the owner or operator of a public water system to give notice to the persons served by the system of the concentration levels of an unregulated contaminant required to be monitored under section 300j–4(a) of this title.

(3) Reports

(A) Annual report by State

(i) In general Not later than January 1, 1998, and annually thereafter, each State that has primary enforcement responsibility under section 300g–2 of this title shall prepare, make readily available to the public, and submit to the Administrator an annual report on violations of national primary drinking water regulations by public water systems in the State, including violations with respect to (I) maximum contaminant levels, (II) treatment requirements, (III) variances and exemptions, and (IV) monitoring requirements determined to be significant by the Administrator after consultation with the States.

(ii) Distribution The State shall publish and distribute summaries of the report and indicate where the full report is available for review.

(B) Annual report by Administrator Not later than July 1, 1998, and annually thereafter, the Administrator shall prepare and make available to the public an annual report summarizing and evaluating reports submitted by States pursuant to subparagraph (A), notices submitted by public water systems serving Indian Tribes provided to the Administrator pursuant to subparagraph (C) or (E) of paragraph (2), and notices issued by the Administrator with respect to public water systems serving Indian Tribes under subparagraph (D) of that paragraph and making recommendations concerning the resources needed to improve compliance with this subchapter. The report shall include information about public water system compliance on Indian reservations and about enforcement activities undertaken and financial assistance provided by the Administrator on Indian reservations, and shall make specific recommendations concerning the resources needed to improve compliance with this subchapter on Indian reservations.

(4) Consumer confidence reports by community water systems

(A) Reports to consumers The Administrator, in consultation with public water systems, environmental groups, public interest groups, risk communication experts, and the States, and other interested parties, shall issue regulations within 24 months after August 6, 1996, to require each community water system to mail, or provide by electronic means, to each customer of the system at least once annually a report on the level of contaminants in the drinking water purveyed by that system (referred to in this paragraph as a “consumer confidence report”). Such regulations shall provide a brief and plainly worded definition of the terms “maximum contaminant level goal”, “maximum contaminant level”, “variances”, and “exemptions” and brief statements in plain language regarding the health concerns that resulted in regulation of each regulated contaminant. The regulations shall also include a brief and plainly worded explanation regarding contaminants that may reasonably be expected to be present in drinking water, including bottled water. The regulations shall also provide for an Environmental Protection Agency toll-free hotline that consumers can call for more information and explanation.

(B) Contents of report The consumer confidence reports under this paragraph shall include, but not be limited to, each of the following:

A public water system may include such additional information as it deems appropriate for public education. The Administrator may, for not more than 3 regulated contaminants other than those referred to in clause (iii)(V), require a consumer confidence report under this paragraph to include the brief statement in plain language regarding the health concerns that resulted in regulation of the contaminant or contaminants concerned, as provided by the Administrator in regulations under subparagraph (A).

(i) Information on the source of the water purveyed.

(ii) A brief and plainly worded definition of the terms “action level”, “maximum contaminant level goal”, “maximum contaminant level”, “variances”, and “exemptions” as provided in the regulations of the Administrator.

(iii) If any regulated contaminant is detected in the water purveyed by the public water system, a statement describing, as applicable—

(I) the maximum contaminant level goal;

(II) the maximum contaminant level;

(III) the level of the contaminant in the water system;

(IV) the action level for the contaminant; and

(V) for any contaminant for which there has been a violation of the maximum contaminant level during the year concerned, a brief statement in plain language regarding the health concerns that resulted in regulation of the contaminant, as provided by the Administrator in regulations under subparagraph (A).

(iv) Information on compliance with national primary drinking water regulations, as required by the Administrator, including corrosion control efforts, and notice if the system is operating under a variance or exemption and the basis on which the variance or exemption was granted.

(v) Information on the levels of unregulated contaminants for which monitoring is required under section 300j–4(a)(2) of this title (including levels of cryptosporidium and radon where States determine they may be found).

(vi) A statement that the presence of contaminants in drinking water does not necessarily indicate that the drinking water poses a health risk and that more information about contaminants and potential health effects can be obtained by calling the Environmental Protection Agency hotline.

(vii) Identification of, if any—

(I) exceedances described in paragraph (1)(D) for which corrective action has been required by the Administrator or the State (in the case of a State exercising primary enforcement responsibility for public water systems) during the monitoring period covered by the consumer confidence report; and

(II) violations that occurred during the monitoring period covered by the consumer confidence report.

(C) Coverage The Governor of a State may determine not to apply the mailing requirement of subparagraph (A) to a community water system serving fewer than 10,000 persons. Any such system shall—

(i) inform, in the newspaper notice required by clause (iii) or by other means, its customers that the system will not be mailing the report as required by subparagraph (A);

(ii) make the consumer confidence report available upon request to the public; and

(iii) publish the report referred to in subparagraph (A) annually in one or more local newspapers serving the area in which customers of the system are located.

(D) Alternative to publication For any community water system which, pursuant to subparagraph (C), is not required to meet the mailing requirement of subparagraph (A) and which serves 500 persons or fewer, the community water system may elect not to comply with clause (i) or (iii) of subparagraph (C). If the community water system so elects, the system shall, at a minimum—

(i) prepare an annual consumer confidence report pursuant to subparagraph (B); and

(ii) provide notice at least once per year to each of its customers by mail, by door-to-door delivery, by posting or by other means authorized by the regulations of the Administrator that the consumer confidence report is available upon request.

(E) Alternative form and content A State exercising primary enforcement responsibility may establish, by rule, after notice and public comment, alternative requirements with respect to the form and content of consumer confidence reports under this paragraph.

(F) Revisions

(i) Understandability and frequency Not later than 24 months after October 23, 2018, the Administrator, in consultation with the parties identified in subparagraph (A), shall issue revisions to the regulations issued under subparagraph (A)—

(I) to increase—

(aa) the readability, clarity, and understandability of the information presented in consumer confidence reports; and

(bb) the accuracy of information presented, and risk communication, in consumer confidence reports; and

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