EPA proposes extending some PFOA and PFOS compliance deadlines to 2031
The U.S. Environmental Protection Agency is proposing to keep federal drinking-water limits for PFOA and PFOS while giving eligible public water systems a way to request two additional years to comply. If the proposal is finalized and a system qualifies, its compliance deadline could move to 2031.
The agency announced the proposed rule on May 18, 2026. The plan would maintain the federal maximum contaminant levels for both chemicals; it would change the timetable available to some systems rather than remove or weaken those limits.
The proposal is not final. EPA has not announced a final-rule date, and the proposal’s ultimate legal and implementation status remains pending.
What EPA is proposing
Under the proposal, eligible drinking-water systems could request two additional years to meet the federal requirements. The extension would not automatically apply to every system, and the approved record does not say how many systems could qualify.
The proposed extension would operate through the national Safe Drinking Water Act framework. That makes the rulemaking relevant to public water systems across the United States, although the effect on any particular system would depend on whether it is eligible and whether its request is approved.
PFOA and PFOS are the two substances specifically named in the proposal. The EPA’s approach is to retain the federal maximum contaminant levels for each while addressing the time some systems may need to complete their compliance efforts.
Why the deadline matters
The timetable could affect how water systems plan treatment work, prepare for compliance and manage related costs. Systems working toward the federal limits may need to assess their current schedules alongside the possibility of seeking additional time.
For people who receive water from public systems, the immediate issue is when a qualifying system must meet the federally enforceable limits. A two-year extension could provide more time for eligible systems to complete compliance work, but it would not mean that every system receives an extension or that 2031 becomes a nationwide final deadline.
The proposal also has implications for the timing of public-health protections related to PFAS contamination. The approved record does not provide numerical PFOA or PFOS limits, treatment-cost estimates or specific health-effect findings, so those details cannot be determined from the proposal materials provided.
Comment period and next steps
EPA held a virtual public hearing on July 7, 2026. The public-comment period closed July 20, giving the agency comments to review before deciding whether to finalize the proposal, revise it or take another action.
EPA’s announcements and schedules page, updated July 24, listed active rulemakings and comment deadlines, including environmental and chemical-safety actions. That schedule provides current agency context, but it does not establish a final date for this rule.
The agency’s civil and cleanup enforcement record, updated July 10, also included nationwide pollution and water-related actions. Those cases provide broader context for continuing federal environmental compliance work, but they do not change the status of the PFOA and PFOS proposal.
For now, water systems and the people who rely on them are still operating under a proposed timetable. The possible 2031 date applies only as a potential extended deadline for eligible systems if the proposal is finalized and the extension is granted. Until EPA takes final action, the existing rulemaking remains under consideration.
Sources
- Proposed PFOA and PFOS Compliance Extension Rule, U.S. Environmental Protection Agency
- EPA Announcements and Schedules, U.S. Environmental Protection Agency
- Civil and Cleanup Enforcement Cases and Settlements, U.S. Environmental Protection Agency
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