By Norm Roulet, 4 November, 2024 The USGS has also released an interactive map, detailing PFAS contamination of drinking water supplies may be more widespread than previously thought. PEMBROOKE, N.H. â PFAS contamination of drinking water supplies may be more widespread than previously thought. Tags Tuskegee of PSAF USGS PFAS Map Groundwater per- and polyfluoroalkyl substances