PFAS Contaminate Nearly Half of US Tap Water, Agency Finds

PFAS can be found in about 45% of US drinking water sources, including public water systems and private water wells, US Geological Survey scientists estimate in research published Wednesday.

Urban areas are most at risk of PFAS contamination in tap water, and their most likely to be found in taps in the Great Plains and Great Lakes regions, the East Coast, and central and southern California.

The findings show how widespread PFAS contamination is in tap water, especially in the water that comes from unregulated private water wells for which there is very little data, according to the study published ...