At least 45% of the nation's tap water could be contaminated with at least one form of PFAS known as "forever chemicals," according to a newly released study by the U.S. Geological Survey.
The man-made chemicals — of which there are thousands — are found in all sorts of places, from nonstick cookware to stain-resistant carpets to contaminated sources of food and water. They break down very slowly, building up in people, animals and the environment over time.
