Maine tap water
2 of 38 Maine water systems with full PFAS testing (5%) averaged above a 2024 federal PFAS level at one or more sampling points.
- 386 active community water systems in the EPA file; 35 serve 3,300+ people and have a full PFAS set.
- 55 systems had at least one health-based violation since 2021-10-26.
- 1 systems report a lead 90th percentile above 15 ppb (some results are old; check each system page).
Largest systems
| System | People served | PFAS above a 2024 level? | Health-based violations since 2021-10-26 |
|---|---|---|---|
| Portland Water District-Greater | 135,068 | No | 0 |
| Maine Water Company Biddeford Saco Div | 42,508 | No | 0 |
| Kennebunk, Kennebunkport & Wells Wd | 35,663 | No | 0 |
| Bangor Water District | 27,298 | No | 0 |
| Lewiston Water & Sewer Division | 23,720 | No | 0 |
| Kennebec Water District | 22,060 | No | 0 |
| Maine Water Company Camden & Rockland | 21,315 | No | 0 |
| Brunswick/Topsham Water District | 18,863 | No | 0 |
All 2 utilities with a page in Maine
Why not "the state's water quality"? You drink from one utility, not a state. Rollups count systems, not people, so one large utility counts the same as a small one. Use the system pages for your actual water.
Not medical or legal advice. UCMR 5 results are screening data, not compliance determinations.
Sources and freshness
Public-water-system facts, violations and lead/copper results: EPA ECHO SDWA download (SDWIS snapshot 2026-10-13). PFAS and lithium results: EPA UCMR 5 final data (sampling 2023–2025). Both are U.S. government works, downloaded 2026-10-26. Numbers are computed by the published method; the same fields are in the open data files.