Where It Comes From
PFAS manufacturing and supply chains for stain-, grease-, and water‑resistant textiles, papers, and coatings; can transform into long‑chain acids like PFOA/PFNA in the environment [2][5].
How You Are Exposed
Drinking water near PFAS facilities, airports/firefighting areas, or waste sites; indoor dust from treated products; some foods and fish; workplace inhalation/skin contact during PFAS production or use [1][2].
Why It Matters
Very persistent and can build up in people; PFAS exposure is associated with higher cholesterol, reduced vaccine response, liver and thyroid changes, and some cancers (e.g., kidney/testicular with PFOA) [1][3][4].
Who Is at Risk
Workers handling PFAS; people using private wells near facilities or AFFF use sites; pregnant people and fetuses; infants consuming formula mixed with contaminated water [1][2].
How to Lower Your Exposure
Use certified water filters (NSF/ANSI 53 or 58), follow local fish/water advisories, choose PFAS‑free products (avoid stain‑resistant treatments), clean dust with wet methods, and follow workplace protections [1][2].
References
- [1]ATSDR. Per- and Polyfluoroalkyl Substances (PFAS) and Your Health. https://www.atsdr.cdc.gov/pfas/
- [2]U.S. EPA. PFAS Explained. https://www.epa.gov/pfas/pfas-explained
- [3]NTP. Monograph on Immunotoxicity of PFOA and PFOS (2016). https://ntp.niehs.nih.gov/whatwestudy/assessments/noncancer/completed/pfoa
- [4]IARC Monographs Vol. 135 (2023): PFOA (Group 1), PFOS (Group 2B). https://publications.iarc.fr/Book-And-Report-Series/Iarc-Monographs-On-The-Identification-Of-Carcinogenic-Hazards-To-Humans/Perfluorooctanoic-Acid-PFOA-And-Perfluorooctane-Sulfonic-Acid-PFOS-2023
- [5]U.S. EPA. Long-Chain Perfluorinated Chemicals (PFCs) Action Plan (2009). https://www.epa.gov/assessing-and-managing-chemicals-under-tsca/long-chain-perfluorinated-chemicals-pfcs-action-plan