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

On March 3, 2021, the Environmental Protection Agency (EPA) published the Fourth Regulatory Determinations in 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). With this action, EPA intends to develop a proposed national primary drinking water regulation for PFOA and PFOS, and as appropriate, take final action. Additionally, EPA will continue to consider other PFAS 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: Economically 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 
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: Undetermined 
Included in the Regulatory Plan: No 
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