Nonprofit groups working to eliminate per- and polyfluorinated alkyl substances (PFAS) acknowledged for threatening human health are advancing their cause through website compilations that highlight such risks. Two such compilations recently were added TRSA’s PFAS Toolkit at bit.ly/PFASKit.

One is the Environmental Working Group’s (EWG’s) interactive map that uses official records from public drinking water systems to indicate if their PFAS levels comply with an advised maximum concentration level of four parts per trillion (PPT). EWG says its researchers have used the highest-quality data available, but notes that the reported levels may change with water system upgrades, such as future ...