This month the State Water Resources Control Board posted the first results of testing for perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) for nearly 600 drinking water supply wells. This testing was performed as part of a comprehensive effort to assess the presence of harmful per- and polyfluoroalkyl substances (PFAS)—coined “forever chemicals—in water systems and groundwater statewide.