EPA proposes stricter national limits on 'forever chemicals' in drinking water.

The US Environmental Protection Agency (EPA) has proposed a new maximum allowable level of 4.4 parts per trillion for PFAS, or polyfluoroalkyl substances, in drinking water, a significant reduction from the previous advisory of 70 parts per trillion. PFAS are man-made chemicals that are difficult to break down and are found in everyday products, including non-stick cookware and waterproof clothing. The chemicals have been linked to health problems including liver disease and low birth weight. The EPA's proposal is a critical step towards removing these toxic chemicals from the nation's drinking water supply.