EPA proposes two-year extension for PFOA and PFOS drinking-water compliance

The Environmental Protection Agency has proposed allowing eligible public water systems to request two additional years to comply with federal drinking-water limits for PFOA and PFOS, potentially moving the compliance deadline to 2031.

The agency is also proposing to rescind federal standards for four other PFAS categories: PFHxS, PFNA, GenX chemicals and PFBS-related hazard-index mixtures. The two proposals could change water systems’ testing, treatment and compliance schedules nationwide, but neither proposal is a final rule.

What EPA proposed

Under the PFOA and PFOS proposal, EPA would retain the existing maximum contaminant levels for the two chemicals. Eligible systems could seek two additional years to meet those enforceable limits, rather than automatically receiving a new deadline.

If finalized as proposed, the extension could allow compliance through 2031. The proposal does not immediately extend the deadline, remove the standards or change the obligations of every public water system. The final scope and any conditions for requesting an extension remain unsettled.

PFAS are a group of chemicals addressed in federal drinking-water policy. The EPA’s separate rescission proposal would remove standards covering PFHxS, PFNA, GenX chemicals and PFBS-related hazard-index mixtures. The agency said that action is intended to correct what it described as a failure to follow requirements of the Safe Drinking Water Act during the earlier rulemaking.

Why the proposals matter

Public water systems across the United States would be responsible for responding to whatever rules EPA ultimately adopts. The proposals could affect the timing of monitoring, treatment projects and compliance decisions, as well as the costs systems face while working to meet federal requirements.

For households, the immediate situation is unchanged by the proposals: the existing federal standards have not been eliminated, and the PFOA and PFOS compliance deadline has not been extended. Any changes would depend on EPA’s review and final decisions.

The proposals also address different regulatory questions. The first would preserve federal limits for PFOA and PFOS while creating a possible route for eligible systems to seek more time. The second would rescind standards for four other PFAS categories based on EPA’s stated procedural rationale. Neither action should be described as a completed rollback or a finalized extension.

Public review has ended

EPA announced the proposals on May 18, 2026. The agency held a virtual public hearing on July 7, and the public-comment period closed July 20.

EPA must now review the submissions before deciding whether to finalize either proposal. The agency has not announced final decisions. The ultimate legal status, implementation conditions and scope of the changes could differ from the proposals after that review.

The debate is part of EPA’s broader national PFAS strategy, which also includes federal funding and enforcement actions. But the agency’s PFAS action materials identify the drinking-water changes as proposals, not completed rules.

Until EPA takes final action, public water systems and households remain subject to the existing federal framework. The next significant step is the agency’s decision on whether, and in what form, to finalize the proposed compliance extension and the separate rescission of the four PFAS standards.