Millions of Americans may be drinking water contaminated by firefighting foam, study says

Millions of people across the U.S. could be exposed to drinking water contaminated with chemicals from firefighting foam, according to a recent study.

The combination of toxic chemicals in aqueous film-forming foam (AFFF) has been found in public water supplies from California to Rhode Island and researchers from UC Berkeley and Harvard University report these highly fluorinated chemicals are linked to cancer, obesity, high cholesterol and endocrine problems, among other concerns.