Can PFAS in trace amounts from drinking water damage embryos across three generations?

What's actually in it

PFAS in drinking water often exist at "trace" levels that regulators consider low. But even tiny amounts accumulate over time. During pregnancy, PFAS reach the embryo and interfere with mitochondria, the energy factories inside every cell. Mitochondrial damage can be passed down to future generations.

What the research says

A 2026 study in Environ Res exposed mice to PFAS at levels found in drinking water and tracked the effects across three generations. The researchers found that PFAS diminished mitochondrial function in embryos not only in the first generation but also in the second and third generations that were never directly exposed.

Damaged mitochondria mean cells can't produce enough energy for normal development. This can affect fertility, pregnancy success, and the health of future children.

Filter your drinking water with a reverse osmosis system. Even "acceptable" PFAS levels in water may cause harm that affects your children and grandchildren.