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the claim

In April 2024 the US EPA set enforceable drinking water limits of 4 parts per trillion for the PFAS compounds PFOA and PFOS.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
3 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that in April 2024 the US EPA set enforceable drinking water limits of 4 parts per trillion for the PFAS compounds PFOA and PFOS?

Yes. An EPA news release states the agency set enforceable Maximum Contaminant Levels of 4.0 parts per trillion for PFOA and PFOS individually, matching the claim's limit. Two other sources confirm EPA issued its first federal PFAS drinking water regulation but do not give the 4 ppt figure or the April 2024 date.

Verdict: SUPPORTED · 3 sources for, 0 against · Last checked

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Evidence for · 3
Biden-Harris Administration Finalizes First-Ever National Drinking Water Standard to Protect 100M People from PFAS Pollution | US EPALockPrimary navigation
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Biden-Harris Administration Finalizes First-Ever National Drinking Water Standard to Protect 100M People from PFAS Pollution | US EPALockPrimary navigation. (n.d.). epa.gov. https://www.epa.gov/newsreleases/biden-harris-administration-finalizes-first-ever-national-drinking-water-standard

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More for · 2
Extracted Data From: EPA PFAS Analyses in Drinking Water, SAB
2026
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Naomi, Y. (2026). Extracted Data From: EPA PFAS Analyses in Drinking Water, SAB. zenodo.org. https://doi.org/10.5281/zenodo.20217737

Current Challenges in Monitoring Low Contaminant Levels of Per- and Polyfluoroalkyl Substances in Water Matrices in the Field.
2024
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H, M. & C, F. (2024). Current Challenges in Monitoring Low Contaminant Levels of Per- and Polyfluoroalkyl Substances in Water Matrices in the Field.. doi.org. https://doi.org/10.3390/toxics12080610

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