
New Maps Reveal 73 Million People Exposed to PFAS in U.S. Drinking Water Above EPA Standards
July 18, 2025 | Source: The New Lede | by Carey Gillam
Over 73 million people in the US are being exposed to toxic PFAS chemicals in their tap water, according to an analysis of data from a US Environmental Protection Agency (EPA) water monitoring program.
Unsafe levels of per- and polyfluoroalkyl substances (PFAS) have been found in excess of EPA thresholds in every US state but Arkansas, Hawaii and North Dakota, according to the analysis published July 17 by the Natural Resources Defense Council (NRDC).
NRDC released maps built on the data, and said the research shows that people across the country will be impacted by an EPA plan to rescind drinking water limits for four PFAS chemicals and push back compliance deadlines for two others.
