Testing your water
For people who are concerned about PFAS exposure, three years or so is a long time. What can consumers do now to limit the levels of PFAS in their drinking water?
First, look up levels of PFAS in your local public water system, suggested David Andrews, a senior scientist at the Environmental Working Group. The advocacy nonprofit has created a national tap water database searchable by zip code that lists PFAS and other concerning chemicals, as well as a national map that illustrates where PFAS has been detected in the US.
However, not all water utilities currently test for pollutants, and many rural residents rely on wells for water. Anyone who wants to personally test their water can purchase a test online or from a certified lab, Andrews said.
“The most important thing is to ensure the testing method can detect down to at least four parts per trillion or lower of PFAS,” he said. “There are a large number of labs across the country certified to test to that level, so there are a lot of options available.”