PFAS water contamination at Buena Vista and Tierra Alta

Units are parts per trillion, equivalent to ng/L. If a water contaminant exceeds the response level, state authorities require notifications to residents and recommend removing the water source from use. The response level is 40 ppt for PFOS, 5,000 ppt for PFBS and has not been set for PFBA or PFPEA.
Chart: Nik Altenberg Source: California State Water Resources Control Board Get the data Created with Datawrapper