They’re known as “forever chemicals.” Nearly 300 drinking water wells and other water sources in California have tested positive for traces of toxic chemicals linked to cancer.
Nearly 300 drinking water wells and other water sources in California have traces of toxic chemicals linked to cancer, new state testing has found.
State officials released the water quality results on Monday, the first step in what’s likely to be a years-long effort to track the scale of the contamination and pinpoint its sources. Only a small fraction of California’s thousands of drinking water wells were tested in this initial study. Officials said they planned to examine many more, but have not committed to future statewide testing.
About half of the wells sampled did not have the chemicals at detectable levels — a result that state officials said was a hopeful sign the contaminants may not have spread as widely as they have in other states. Yet testing found contaminated drinking water in communities across California, from densely-populated cities with large and complex water systems to mobile home parks that depend on a single private well.
There is no agreed-upon safe level of PFAS. The Environmental Protection Agency has classified the chemicals as an “emerging contaminant” and has delayed setting a national standard for limiting the levels in drinking water. In 2016, the agency issued a nonbinding health advisory for two of the most common types, PFOS and PFOA, recommending that water utilities notify the public if levels of the chemicals reached a combined 70 parts per trillion.
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