Where It Comes From
Making/using fluorinated surfactants; metal plating; firefighting foams (AFFF); textile/leather treatments; breakdown of related fluorinated chemicals [1][2].
How You Are Exposed
Drinking water near contaminated sites, food (especially fish), indoor dust, certain treated goods; workplace air/skin during manufacturing or AFFF use [1][2].
Why It Matters
Very persistent; PFAS exposure has been linked to higher cholesterol, liver changes, reduced vaccine response, and developmental effects; some PFAS (e.g., PFOA) cause cancer in humans [1][3][4].
Who Is at Risk
People near airports, military bases, plating facilities; workers making/using PFAS or AFFF; pregnant people and infants; those eating a lot of locally caught fish from affected waters [1][2].
How to Lower Your Exposure
Check local advisories and test private wells; use NSF/ANSI 53 (carbon) or 58 (reverse osmosis) certified filters; follow fish advisories; choose PFAS‑free products; reduce dust with wet cleaning/HEPA; follow workplace safety guidance [2][5][6].
References
- [1]ATSDR. Toxicological Profile for Perfluoroalkyls (PFAS). 2021.
- [2]U.S. EPA. PFAS Explained: Sources and Exposure.
- [3]NTP. Immunotoxicity of PFOA and PFOS. 2016.
- [4]IARC. Perfluorooctanoic Acid (PFOA) — Group 1. 2023.
- [5]ATSDR/CDC. PFAS and Your Health: Steps to Reduce Exposure.
- [6]U.S. EPA. Fish Advisories (PFAS).