This map will remind you why you can’t always trust your tap water The chemical culprit, perfluorooctanoic acid (PFOA), is, along with perfluorooctanesulfonic acid (PFOS), one of two highly fluorinated toxic chemicals, known as PFCs, that are devastating to human health yet unregulated by the EPA. Leaked into water supplies by the chemical manufacturing processes of products like DuPont’s Teflon and 3M’s Scotchgard, the contaminants are linked to […]