Hydrologic and Water Quality Studies of PFAS in Pennsylvania

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USGS is working with Federal, state, and local partners to monitor and evaluate perfluoroalkyl and polyfluoroalkyl substances (PFAS) in Pennsylvania's groundwater and surface waters.

The first-of-its-kind PFAS reconnaisence, in cooperation with the Pennsylvania Department of Environmental Protection, detected PFAS in Pennsylvania streams at 135 of 180 sampling locations; a subset of the 180 sites was sampled to further evaluate seasonal fluctuation and fate and transport of PFAS.

USGS is partnering with the U.S. Navy to study the occurence and migration of groundwater and surface water containing PFAS from former naval facilities and other sources in southeastern Pennsylvania.

PFAS are synthetic chemicals with widespread commercial and industrial use that can take a very long time to break down in the environment and may affect human health. PFAS has been detected in Pennsylvania waters in concentrations as low as parts per trillion.

The Pennsylvania Water Science Center is working with the Pennsylvania Department of Environmental Protection and experts across the Nation to develop and implement rigorous and innovative techniques to detect PFAS at very low levels to help the public understand the spatial distribution and magnitude of PFAS contamination within the environment.