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EPA/OW RIN: 2040-AG18 Publication ID: Fall 2023 
Title: PFAS National Primary Drinking Water Regulation Rulemaking  
Abstract:

On March 3, 2021, the Environmental Protection Agency (EPA) published the Fourth Regulatory Determinations in the Federal Register, including a determination to regulate perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) in drinking water. Per the Safe Drinking Water Act, following publication of the Regulatory Determination, the Administrator shall propose a maximum contaminant level goal (MCLG) and a national primary drinking water regulation (NPDWR) not later than 24 months after determination and promulgate a NPDWR within 18 months after proposal (the statute authorizes a 9-month extension of this promulgation date). EPA issued a proposed national primary drinking water regulation for PFOA and PFOS as well as other PFAS on March 29, 2023 as part of this action. This action provides a key commitment in EPA's "PFAS Strategic Roadmap: EPA's Commitments to Action 2021-2024."

 
Agency: Environmental Protection Agency(EPA)  Priority: Section 3(f)(1) Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: Undetermined  Unfunded Mandates: Undetermined 
CFR Citation: 40 CFR 141    40 CFR 142   
Legal Authority: 42 U.S.C. 300f et seq. Safe Drinking Water Act   
Legal Deadline:
Action Source Description Date
NPRM  Statutory  Safe Drinking Water Act  03/03/2023 
Final  Statutory  Safe Drinking Water Act  09/03/2024 

Statement of Need:

EPA has determined that PFOA and PFOS may have adverse health effects; that PFOA and PFOS occur in public water systems with a frequency and at levels of public health concern; and that, in the sole judgment of the Administrator, regulation of PFOA and PFOS presents a meaningful opportunity for health risk reduction for persons served by public water systems.

Summary of the Legal Basis:

The EPA is developing a PFAS NPDWR under the authority of the Safe Drinking Water Act (SDWA), including sections 1412, 1413, 1414, 1417, 1445, and 1450 of the SDWA. Section 1412 (b)(1)(A) of the SDWA requires that EPA shall publish a maximum contaminant level goal and promulgate a NPDWR if the Administrator determines that 1) the contaminant may have an adverse effect on the health of persons, 2) is known to occur or there is a substantial likelihood that the contaminant will occur in public water systems with a frequency and at a level of public health concern, and 3) in the sole judgment of the Administrator there is a meaningful opportunity for health risk reduction for persons served by public water systems. EPA published a final determination to regulate PFOA and PFOS on March 3, 2021 after considering public comment (86 FR 12272). Section 1412 (b)(1)(E) of the SDWA requires that EPA publish a proposed Maximum Contaminant Level Goal and a NPDWR within 24 months of a final regulatory determination and that the Agency promulgate a NPDWR within 18 months of proposal.

Alternatives:

Undetermined.

Anticipated Costs and Benefits:

Undetermined.

Risks:

Studies indicate that exposure to PFOA and/or PFOS above certain exposure levels may result in adverse health effects, including developmental effects to fetuses during pregnancy or to breast-fed infants (e.g., low birth weight, accelerated puberty, skeletal variations), cancer (e.g., testicular, kidney), liver effects (e.g., tissue damage), immune effects (e.g., antibody production and immunity), and other effects (e.g., cholesterol changes). Both PFOA and PFOS are known to be transmitted to the fetus via the placenta and to the newborn, infant, and child via breast milk. Both compounds were also associated with tumors in long-term animal studies.

Timetable:
Action Date FR Cite
Notice  02/09/2022  87 FR 7412   
NPRM  03/29/2023  88 FR 18638   
NPRM Comment Period End  05/30/2023 
Final Rule  01/00/2024 
Additional Information: .
Regulatory Flexibility Analysis Required: Yes  Government Levels Affected: Federal, Local, State, Tribal 
Small Entities Affected: Governmental Jurisdictions  Federalism: Yes 
Included in the Regulatory Plan: Yes 
RIN Data Printed in the FR: Yes 
Agency Contact:
Alexis Lan
Environmental Protection Agency
Office of Water
1200 Pennsylvania Avenue NW, 4601M,
Washington, DC 20460
Phone:202 564-0841
Email: lan.alexis@epa.gov