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Response Level: <br />Threshold at which <br />state recommends <br />water not served to <br />the public without <br />treatment or blending <br />Current Response <br />Levels for PFAS (Feb. <br />2020): <br />PFOA = 10 parts per <br />trillion (ppt) <br />PFOS = 40 ppt <br />i <br />State and Federal <br />EPA have separately <br />begun process to <br />establish enforceable <br />Maximum <br />Contaminant Levels <br />(MCLs) <br />