2024 Draft PFAS Human Health Water Quality Criteria
The EPA is accepting written comments from the public on the draft human health criteria through February 24, 2025.

The EPA has derived draft national recommended water quality criteria protective of human health for perfluorooctanoic acid (PFOA), perfluorooctane sulfonic acid (PFOS), and perfluorobutane sulfonic acid (PFBS). These draft criteria reflect the latest available scientific information including final human health toxicity values, draft bioaccumulation factors, draft relative source contributions, and updated drinking water ingestion rates.

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