EPA Reverses Claim That Two Toxic PFAS Compounds Were Phased Out

The agency's quiet correction leaves unresolved the question of how much exposure to PFOA and PFOS the federal government will ultimately permit, with at least one manufacturer still producing...

The U.S. Environmental Protection Agency has withdrawn a prior claim that two of the most hazardous per- and polyfluoroalkyl substances, PFOA and PFOS, had been phased out of production in the United States, according to a report published October 18 by The Guardian.

The EPA had previously maintained, in public communications, that both compounds were no longer manufactured domestically. The agency has now quietly corrected that position without a formal public announcement, according to The Guardian's reporting.

The correction carries regulatory weight because the EPA has separately concluded, based on its own scientific review, that virtually no level of exposure to PFOA or PFOS in drinking water is safe. That finding placed both compounds among the most scrutinized contaminants in the agency's history.

The International Agency for Research on Cancer, a body of the World Health Organization, classifies PFOA as "carcinogenic to humans," its highest risk category, and classifies PFOS as "possibly carcinogenic to humans," according to IARC's published monographs.

Despite those classifications and the EPA's own exposure findings, the agency is permitting Houston-based manufacturer Inhance to continue producing containers from which PFOA has been found to leach at measurable levels, according to The Guardian. The specific regulatory instrument or exemption under which Inhance operates was not detailed in the available source material. A review of EPA enforcement records or court filings related to Inhance would be needed to establish the full legal basis.

PFAS compounds, a group of thousands of synthetic chemicals, are widely used in industrial and consumer products for their resistance to heat, water, and oil. PFOA was historically used in the production of nonstick coatings, including Teflon, while PFOS was a key ingredient in certain firefighting foams and stain-resistant treatments. Both compounds persist in the environment and accumulate in human tissue, characteristics that led to their common designation as "forever chemicals."

Major U.S. Manufacturers, including 3M and DuPont, agreed in the early 2000s to voluntarily phase out PFOA and PFOS production under an EPA stewardship program that concluded in 2015. The EPA's now-retracted claim appears to have been grounded in that voluntary phase-out agreement rather than a comprehensive regulatory ban.

Federal drinking water standards for PFOA and PFOS were finalized in April 2024 under the Biden administration, setting maximum contaminant levels at 4 parts per trillion for each compound individually, according to the EPA's published final rule. Those standards require public water systems to monitor, report, and in some cases treat water to meet the limits by 2029.

The status of those 2024 standards under the current administration is not confirmed in the available source material. Whether the EPA's withdrawal of the phase-out claim signals a broader policy shift on PFAS enforcement, or is limited to a factual correction, has not been stated by the agency publicly.

Environmental and public health advocates have long argued that voluntary phase-outs, without statutory prohibition and enforceable penalties, are insufficient to eliminate PFAS exposure. The presence of an active domestic manufacturer producing PFOA-leaching containers while the EPA maintains that the compound is effectively unsafe at any drinking water level illustrates the gap between the agency's scientific conclusions and its current enforcement posture.

The EPA had not issued a formal statement addressing the retraction as of the date of The Guardian's report on October 18, 2026. The agency's Office of Water and Office of Chemical Safety and Pollution Prevention are the relevant divisions whose records and public filings would clarify the scope of any revised agency position.