California drafts safe limits for PFOA and PFOS in drinking water
In a draft report, California says only extremely low levels of two toxic “forever chemicals” are safe for humans to drink in water. A July 22 draft report from the California Environmental Protection Agency would set a science-based safe level—called a public health goal—of 0.007 part per trillion for perfluorooctanoic acid (PFOA) and 1 ppt for perfluorooctanesulfonic acid (PFOS) in drinking water. The two compounds are the two most common per- and polyfluoroalkyl substances (PFAS)—a group of environmentally persistent synthetic molecules—found as contaminants in drinking water.
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