Water company finds PFAS in five Atascadero wells
In February 2020, the Water Board adopted new, lower Response Levels for PFOA and PFOS of 10 ppt and 40 ppt, respectively. Four of wells previously sampled under the Water Board’s order now had had PFOA levels above this newly adopted Response Level of 10 ppt. Atascadero Mutual Water Company immediately took these wells out of service.