2040-AG53 202510 The Regulatory Plan and the Unified Agenda of Federal Regulatory and Deregulatory Actions 2040 Office of Water OW 2000 Environmental Protection Agency EPA Rescission of Regulatory Determinations and Removal of Related Provisions for Four PFAS Substances (PFHxS, PFNA, HFPO-DA (GenX), and the mixture of these three PFAS plus PFBS)

The EPA intends to propose to rescind its regulatory determinations to regulate four per- and polyfluoroalkyl substances (PFAS) perfluorohexane sulfonic acid (PFHxS), perfluorononanoic acid (PFNA), hexafluoropropylene oxide dimer acid and its ammonium salt (HFPO-DA, commonly known as GenX), and the mixture of these three PFAS plus perfluorobutane sulfonic acid (PFBS) under the Safe Drinking Water Act. The EPA also intends to propose to rescind all associated regulatory provisions associated with the Final PFAS NPDWR (89 FR 32532) currently codified in 40 CFR part 141 and 142 exclusive to these PFAS that were promulgated pursuant to the regulatory determinations that EPA is now proposing to rescind.

]]> Other Significant Previously Published in The Unified Agenda Proposed Rule Stage No No Deregulatory 40 CFR Part 469 Subpart C 42 U.S.C. 300f et seq Safe Drinking Water Act Yes

The agency is committed to addressing Per- and Polyfluoroalkyl substances (PFAS) in drinking water while following the law and ensuring that regulatory compliance is achievable for drinking water systems.

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This rulemaking will ensure that the determinations and any resulting drinking water regulation follow the legal process laid out in the Safe Drinking Water Act.

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This deregulatory action is focused on ensuring that the determinations and any resulting drinking water regulation follow the legal process laid out in the Safe Drinking Water Act.

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The EPA is currently examining costs and benefits which will be included in the proposed rule for public comment.

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The EPA is still evaluating the scope and risks associated with the proposed rule.

]]> NPRM 07/00/2026 Final Rule 09/00/2026 No No Federal Local State Tribal No No No No Alexis Lan 2040 Office of Water OW 202 564-0841 lan.alexis@epa.gov 1200 Pennsylvania Avenue NW, 4601M, Washington DC 20460