Search 429,323 water systems for reported PFAS results, sample history, regulatory dates, and service providers. Historical UCMR5 results are a starting point for research; they do not establish current tap-water conditions or legal compliance.
Free: your system's PFAS status against EPA's 4 ppt limit, plus weekly alerts on new rules, deadlines, and funding in your state.
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Look up your reported PFAS results, deadlines, and open funding
Free per-system reports for every U.S. public water system. Search by name or PWSID.
See which state funding rounds are open and when they close
FY26 was the last year of federal emerging-contaminant grants. State-by-state allotments, open rounds, and an application checklist.
Find the systems that need treatment or still have to test
One-time lists by state with operator contacts, plus a free directory listing for your firm.
The major PFAS settlement claim windows — DuPont/Chemours and 3M Phase 2 — have now closed. What remains is the harder deadline: compliance with the 4 ppt limit is due April 26, 2029 under the current rule, with a proposed extension to 2031 not yet final.
UCMR5 test results, SDWIS system records, state monitoring data (California GAMA, USGS WQP), EPA ECHO compliance data, grants, and federal awards — matched to your PWSID so you don't have to pull them yourself.
Search by name, PWSID, zip code, or browse the interactive map. See your PFAS detection levels compared to EPA MCLs instantly.
See the deadlines that still apply, the state funding rounds open now, and the labs and treatment firms that work in your state.
Enter your email — we'll look up your system's UCMR5 detection record, tell you whether it exceeds EPA's 4 ppt limit for PFOA or PFOS, and send free weekly alerts on new rules, deadlines, and funding in your state.
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