Return to ASDWA's Newsroom

Pennsylvania Announces Final PFAS Statewide Sampling Results

Pennsylvania has released its PFAS Statewide Sampling Results that includes a complete and final list of sample results collected from public water systems. The statewide sampling plan began in June 2019 to test for six PFAS (PFOS, PFOA, PFNA, PFHxS, PFHpA and PFBS) and was expanded in 2020 to test for 18 PFAS. The PA Department of Environmental Protection tested 372 targeted sites located within a half mile of a potential source of PFAS contamination, such as military bases, fire training sites, landfills, and manufacturing facilities; and 40 sites that were not located within a half mile of a potential source of PFAS contamination to establish a baseline.

The sampling was concluded in March 2021 and the results do not indicate widespread PFAS contamination, though PFOS and PFOA were most commonly detected (at 103 and 112 sites), only two sites had results above EPA’s Health Advisory Level for the sum of PFOS and PFOA at 70 parts per trillion (ppt). The other six PFAS that were detected are: PFNA, PFHxS, PFHpA, PFBS, PFHxA and PFUnA. For more information, read the press release and view the results on the PA PFAS website.