For the first time, the US government plans to regulate the presence of “forever chemicals” in drinking water. PFAS, or perfluoroalkyl and polyfluoroalkyl substances, are ubiquitous in the modern world. They’re found in many household items, including non-stick Teflon pans and dental floss, and can stay in water and soil for generations. What’s more, PFAS exposure has been linked to a whole host of health problems, including cancer, liver damage, asthma and developmental issues among children.