US public water systems · EPA UCMR 5

When was your water system tested for PFAS?

Search a public water system name or ID. See each sample date, point, reported PFAS detections and results below EPA's minimum reporting level. The results do not tell you which system serves an address.

Source: EPA UCMR 5 final occurrence data, August 2026. Check individual results in EPA's Data Finder. Values are shown in the source unit, µg/L. “Below MRL” means the result was reported below the minimum reporting level; it does not mean zero. Samples can come from different facilities and points, and these historical monitoring results are not a current water quality, health, or regulatory compliance verdict. Ask your utility about your current water and consult its consumer confidence report.