Per-/poly-fluroalkyl substances, or PFAS, are everywhere. They are used in firefighting foam, car wax, and even fast-food wrappers. They’re one of the most toxic substances ever identified—harmful at concentrations in the parts per trillion—yet very little is known about them. PFAS, which is a class of over 3000 compounds, are only regulated at the state level, so while some states are working to aggressively tackle the problem, other states have chosen to ignore PFAS completely, leaving concentrations unknown and health risks unexplored. Read more…
