Where It Comes From
Fluorochemical manufacturing; treated textiles and paper/food packaging; breakdown of related PFAS; wastewater and landfills; sites where firefighting foams were used [1][2].
How You Are Exposed
Drinking water near contaminated sites; food (especially fish/shellfish); indoor dust; work in fluorochemical production or firefighting [1][2].
Why It Matters
Long‑chain PFAS can accumulate in blood. PFAS exposure has been associated with higher cholesterol, liver changes, reduced vaccine response, and some pregnancy‑related hypertension; some PFAS (like PFOA) have been linked to certain cancers [1][2][4].
Who Is at Risk
People using private wells near industry, military, or AFFF areas; workers handling PFAS; pregnant people, infants, and those who eat a lot of locally caught fish [1][2].
How to Lower Your Exposure
Test your water; use NSF‑certified activated carbon or reverse osmosis filters; follow local fish advisories; reduce dust with HEPA vacuuming/wet mopping; choose PFAS‑free or untreated products when possible [2][3][1].
References
- [1]ATSDR. Toxicological Profile for Perfluoroalkyls (PFAS). Agency for Toxic Substances and Disease Registry, 2021.
- [2]U.S. EPA. Basic Information on PFAS. Environmental Protection Agency, 2024.
- [3]U.S. EPA. Reducing PFAS in Drinking Water and at Home (treatment and consumer tips). Environmental Protection Agency, 2023.
- [4]NTP. Monograph on Immunotoxicity Associated with Exposure to PFOA or PFOS. National Toxicology Program, 2016.