Where It Comes From
Made for coatings on textiles, carpets, paper/packaging, and as a breakdown product of fluorotelomer chemicals; also linked to firefighting foams and industrial discharges [1][2].
How You Are Exposed
Primarily through drinking water; also via food, indoor dust, and some treated consumer products; workers may be exposed on the job [1][2].
Why It Matters
PFHxA is very persistent and mobile in water. While it bioaccumulates less than some older PFAS, studies indicate potential effects on the liver, thyroid hormones, kidneys, and development, mainly from animal data; human data are limited [1][2].
Who Is at Risk
People using contaminated private wells or community systems near PFAS facilities or airports; pregnant people, fetuses, and infants; firefighters and workers handling PFAS-containing materials [1][2].
How to Lower Your Exposure
Check local water quality. Use home water treatment certified for PFAS (activated carbon or reverse osmosis). Avoid “stain‑resistant” treatments and grease‑resistant food packaging when possible, reduce indoor dust, and follow workplace safety guidance [2][3].
References
- [1]ATSDR. Toxicological Profile for Perfluoroalkyls (PFAS). 2021. https://www.atsdr.cdc.gov/toxprofiles/tp200.pdf
- [2]U.S. EPA. Our Current Understanding of the Human Health and Environmental Risks of PFAS. https://www.epa.gov/pfas/our-current-understanding-human-health-and-environmental-risks-pfas
- [3]ATSDR/CDC. PFAS and Your Health: Information for Families and Communities. https://www.atsdr.cdc.gov/pfas/health-effects/index.html