Madison, Wis., resident Brad Horn collects a water sample to test for PFAS on Aug. 8, 2022. His family collected the water that came out of their AquaRain brand water filter and sent the water to the Regional Water Authority in Connecticut for testing. The results came back with no detectable levels of PFAS in 17 categories and one result of "below Minimum Reporting Level but greater than the Method Detection Limit" for PFHxS. Coburn Dukehart/Wisconsin Watch