The US Environmental Protection Agency has proposed new regulations on PFAS in drinking water, setting the new threshold of 4 nanograms per liter for PFOA and PFOS.
Known as “forever chemicals”, the compounds are used in firefighting foam and nonstick coatings and have been linked to cancer and several diseases. The proposed regulation would require water utilities to monitor PFAS, notify the public of the presence of PFAS, and treat their drinking water supplies to reduce the level of the chemicals.