Where It Comes From
Fluorochemical manufacturing; intermediate for sulfonamides/surfactants; releases from plants and product waste; can form perfluoroalkyl sulfonic acids in the environment [2].
How You Are Exposed
Drinking water near PFAS sources; food contact materials; indoor dust; workplaces using PFAS or firefighting foams [1][2].
Why It Matters
PFAS persist and can build up. Exposure is linked to higher cholesterol, immune effects (lower vaccine response), liver changes, pregnancy-related hypertension; some PFAS are linked to certain cancers (e.g., PFOA) [1][4].
Who Is at Risk
Workers in fluorochemical production; communities near facilities or contaminated wells; pregnant people, infants, and children [1][2].
How to Lower Your Exposure
Use NSF/ANSI 53 (carbon) or 58 (reverse osmosis) certified filters; check local water reports; wet-mop/HEPA-vacuum dust; follow workplace controls and hygiene; choose PFAS-free products when possible [2][3].
References
- [1]ATSDR. PFAS (Per- and Polyfluoroalkyl Substances) ToxFAQs. https://www.atsdr.cdc.gov/toxfaqs/pfas_general.htm
- [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]U.S. EPA. Reducing PFAS in Drinking Water with Home Treatment. https://www.epa.gov/sdwa/reducing-pfas-drinking-water-home-treatment
- [4]IARC Monographs Vol. 131 (2023): PFOA (Group 1) and PFOS (Group 2B). https://publications.iarc.fr/604