EPA gives water utilities two more years to remove PFAS from drinking water

On April 8, 2026, EPA Administrator Lee Zeldin Lee Zeldin finalized a rule extending the deadline for public water systems to remove PFOA and PFOS from drinking water from 2029 to 2031. PFOA and PFOS are among the most prevalent per- and polyfluoroalkyl substances (forever chemicals) that contaminate drinking water nationwide. The EPA kept the maximum contaminant levels (MCLs) unchanged at 4 parts per trillion for both chemicals, the standard set by the Biden administration in April 2024. Lee Zeldin Zeldin cited cost and operational challenges reported by water utilities, particularly in rural and small communities. The extension requires water systems to complete initial PFAS monitoring by 2027, implement mitigation plans by 2029, and achieve full compliance by 2031. Under Zeldin leadership, the EPA has proposed withdrawing regulations for four additional PFAS chemicals (PFHxS, PFNA, GenX, and PFBS), narrowing the scope of federal protection. Lee Zeldin Zeldin acknowledged the polluter pays principle but stated that current rules shift cleanup costs to consumers rather than chemical manufacturers.

Key facts

EPA Administrator Lee Zeldin Lee Zeldin finalized April 8, 2026 rule extending PFAS compliance deadline from 2029 to 2031. Biden EPA set first-ever federal PFAS limits in April 2024: PFOA and PFOS at 4 parts per trillion. Original deadline was 2029. Zeldin extended it 2 years citing utility operational challenges. ()

New compliance timeline: water systems must complete initial PFAS monitoring by 2027, submit mitigation plans by 2029, achieve compliance by 2031. Violations after 2031 require corrective action and public notification. MCL values unchanged at 4 ppt for PFOA and PFOS.

Lee Zeldin Zeldin also proposed withdrawing MCLs for four additional PFAS chemicals: PFHxS, PFNA, HFPO-DA (GenX), and PFBS. He cited cost and feasibility concerns. Full rule expected later in 2026. This removes protections Biden EPA had proposed for compounds linked to cancer and thyroid disease.

PFAS chemicals are called 'forever chemicals' because they don't break down in the environment or body. They accumulate in drinking water, blood, and organs. Linked to cancer, thyroid disease, and immune suppression. EPA estimates 16.5 million Americans served by public water systems with PFAS above the 4 ppt limit.

Water utilities reported $50+ billion in estimated cleanup costs for full PFAS compliance nationwide. Costs typically pass to ratepayers through rate increases. Chemical manufacturers including 3M and DuPont produced PFAS for decades and settled contamination lawsuits for billions, but ratepayers still bear most cleanup costs.

Lee Zeldin Zeldin called the extension a 'flexible approach balancing health protections with practical implementation timelines.' He urged Congress to pass legislation making polluters pay for cleanup rather than utilities. No such legislation has advanced in Congress.

Biden EPA issued the original PFAS rule April 10, 2024, marking the first time the federal government set maximum contaminant levels for PFAS in drinking water. It was Biden's most significant environmental health action. Lee Zeldin Zeldin's extension is Trump administration's first major rollback of that rule.

Environmental advocates including the Environmental Defense Fund and Natural Resources Defense Council criticized the extension. NRDC attorney Cyndi Tirado said the delay 'gives polluters more time to avoid accountability while millions of Americans drink contaminated water.'

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