Public CommentProposedProposed RegulationPublic CommentReporting Deadline
EPA proposed federal exemption framework to extend PFOA/PFOS MCL compliance deadline to April 26, 2031
Safe Drinking Water Act (SDWA) — PFAS National Primary Drinking Water Regulation (NPDWR)U.S. Environmental Protection Agency (EPA)US
Announced
May 18, 2026
Description
EPA proposed a rule that would create a federal exemption framework allowing eligible public water systems additional time to comply with the PFOA and PFOS maximum contaminant levels (MCLs), extending the compliance deadline to April 26, 2031 for approved systems. This is a significant timeline/implementation change for utilities planning treatment upgrades and capital projects. The proposal is accompanied by EPA supporting materials (pre-publication FR notice and FAQs) and uses a formal rulemaking docket process.
Sources
- OfficialProposed PFOA and PFOS Compliance Extension Rule | US EPA
- OfficialPre-publication Federal Register notice (PFOA/PFOS compliance extension NPRM)
- OfficialFAQ: Proposed PFOA and PFOS Compliance Extension Rule (May 2026)
- Hearing registration (as referenced by EPA)
- OfficialMunicipal Resources | US EPA (rulemaking receipt listing)