PFAS forever chemicals topped new EPA limits. Is yours on our map?

Millions of Americans rely on drinking water systems that have recently exceeded new limits for toxic “forever chemicals” that the Environmental Protection Agency announced on Wednesday. 

USA TODAY found 608 systems across the country that have measured PFAS, or per-and polyfluoroalkyl substances, at or above the newly established limits since last year. Together, they serve nearly 35 million people. 

Another 13 million people drink water from hundreds of other systems that have recently detected the chemicals at levels that require reporting to the EPA, but not quite enough to surpass the new limits, according to USA TODAY’s analysis. 

These results represent one-time samples, and the EPA wouldn’t require water systems to make changes unless their running annual average passes the new limits. 

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