The EPA changed how it calculates safe levels of PFOA and PFOS in drinking water, using new science methods, which led to much stricter safety limits—from 70 to nearly zero in some cases.

Evidence from Studies

Supporting (1)

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Critical endpoints of PFOA and PFOS exposure for regulatory risk assessment in drinking water: Parameter choices impacting estimates of safe exposure levels.

Editorial/Opinion

2023 Feb

The study shows that the EPA's scientific methods for deciding how safe certain levels of PFOA and PFOS are in drinking water led to much stricter safety limits. These methods are the main reason the safe level was dropped dramatically.

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No contradicting evidence found

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Source Study

Critical endpoints of PFOA and PFOS exposure for regulatory risk assessment in drinking water: Parameter choices impacting estimates of safe exposure levels.

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DOI: 10.1016/j.yrtph.2022.105323

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