Where It Comes From
Used as a processing aid in fluoropolymer production; released from industrial wastewater and air. In water it becomes HFPO‑DA and is persistent and mobile [1][2].
How You Are Exposed
Mainly by drinking contaminated water; also by eating fish from impacted waters, workplace contact, and possibly household dust near sources [1][3].
Why It Matters
EPA set a very low drinking water health advisory (10 parts per trillion) to protect against potential liver, immune, and developmental effects; lowering exposure is recommended [2][1].
Who Is at Risk
People using private wells or community systems near fluoropolymer plants, pregnant people and infants, and workers handling GenX chemicals [1][2].
How to Lower Your Exposure
Check local water advisories and consider testing private wells; use home filters certified to reduce PFAS (reverse osmosis or activated carbon); follow fish advisories; and follow workplace protections [3][4].
References
- [1]U.S. EPA. Human Health Toxicity Assessment for HFPO‑DA and its Ammonium Salt (GenX Chemicals), 2021.
- [2]U.S. EPA. 2022 Interim Updated Drinking Water Health Advisory: GenX Chemicals (HFPO‑DA and its Ammonium Salt).
- [3]U.S. EPA. Understanding and Reducing PFAS in Drinking Water (home treatment guidance).
- [4]ATSDR/CDC. PFAS and Your Health: Information for Communities and Consumers.