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PFAS Detected in Most U.S. Surface Waters, New Analyses Show

The findings show persistent contamination that threatens fish, drinking sources and public health as federal limits face rollback proposals.

Overview

  • Environment America and partner groups released compilations Wednesday showing PFAS were detected at 83% of 1,602 U.S. lakes, rivers and streams tested from 2022–2024, with higher detection rates in several states.
  • State reports found PFAS in 87% of 108 Massachusetts sites and in 96% of tested Pennsylvania waterways and 91% of New Jersey sites, and many monitored stretches of the Mississippi River and Lake Ontario tested positive at every sampled location.
  • Some local samples showed concentrations far above EPA drinking-water benchmarks, prompting 64 fish-consumption advisories in Massachusetts and a Pennsylvania 'do not eat' advisory for Wissahickon Creek.
  • Scientists and public-health officials link PFAS exposure to cancers, reproductive and developmental harms, high cholesterol and reduced immunity, and report authors warn current monitoring captures only a fraction of waterways so the problem may be larger.
  • Regulatory debate is intensifying as the EPA’s earlier drinking-water limits are being reconsidered and advocates press states and regulators for stronger source controls, expanded monitoring, product bans and tighter sewage-sludge rules.