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Measured PFOS Concentrations in U.S. Ambient Surface Waters through 2020

Published by U.S. Environmental Protection Agency | U.S. Environmental Protection Agency | Metadata Last Checked: August 02, 2025 | Last Modified: 2021-06-22
These data were part of a critical review that looks at the occurrence of PFOS in ambient surface waters across the U.S. All data from this paper were obtained from publicly available literature, including peer-review journal articles, theses, and government and industry reports through 2020. These data include measured PFOS concentrations across the U.S., sample site location (i.e., state, waterbody, and GPS coordinates), and dates of sample collection and analysis, and analytical methods used. Citation information for this dataset can be found in the EDG's Metadata Reference Information section and Data.gov's References section.

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