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Federal
Environmental Sampling and Modeling Results to Characterize Surface-Water Quality at 32 Sites Across the Potomac River Watershed, 2022 (ver. 3.0, April 2025)
Department of the Interior —
This data release presents chemical results from investigations of surface-water quality in the Potomac River watershed (encompassing Washington, D.C. and parts of... -
Federal
Longitudinal assessment of per- and polyfluoroalkyl substances and co-occurring inorganic and organic contaminants in Neshaminy Creek, Pennsylvania, November 2021
Department of the Interior —
Per- and polyfluoroalkyl substances (PFAS) and co-occurring inorganic and organic contaminants are widely distributed in the environment and understanding their...