Where It Comes From
Legacy PFOS-related products (stain/grease-resistant textiles, carpet, paper/packaging), firefighting foams (AFFF), and waste/wastewater from fluorochemical sites [1][2].
How You Are Exposed
Drinking contaminated water, eating fish, indoor dust from treated goods, and workplace contact (firefighting, textile/paper, chemical plants) [1][2][3].
Why It Matters
Very persistent; builds up in people and wildlife; transforms to PFOS. PFOS exposure is linked to immune effects, higher cholesterol, liver and developmental impacts; cancer is a concern for some PFAS [1][2][4].
Who Is at Risk
People near contaminated water, airports or military bases; PFAS/AFFF workers; pregnant people, infants and children [1][2][3].
How to Lower Your Exposure
Check local PFAS water results; use NSF/ANSI 53 or 58 filters (carbon or RO); follow fish advisories; damp-dust/HEPA vacuum; avoid “stain-resistant” treatments; use workplace PPE/hygiene [1][2][3].
References
- [1]ATSDR. Toxicological Profile for Perfluoroalkyls (PFAS). 2021.
- [2]U.S. EPA. PFAS Explained; Consumer resources on PFAS in drinking water. 2022–2024.
- [3]CDC/ATSDR. PFAS Information for Communities and Health Professionals; Biomonitoring data (NHANES).
- [4]IARC. Monographs Volume 131: Evaluation of PFOA (Group 1) and PFOS (Group 2B). 2023.