Firefighting chemicals in U.S. drinking water sources, federal data shows

Protesters in Hoosick Falls, N.Y., in June hold signs calling for hearings on contamination in their town’s drinking water by a chemical related to firefighting foam. (Mike Groll, Associated Press)
A study of drinking water supplies throughout the U.S. shows that numerous sources are contaminated with firefighting chemicals.
A team of scientists examined government data from thousands of public drinking water supplies. The water samples had been collected by the federal Environmental Prote