Nearly half of the tap water in the United States may have what are known as “forever chemicals,” also referred to as per- and poly-fluoroalkyl substances (PFAS), a study suggests.
The study by the U.S. Geological Survey tested for the presence of 32 types of PFAS from samples taken from 716 locations—269 private wells and 447 public supply—across the nation from 2016 to 2021.
