Results from entry points (water leaving treatment, not household taps) of public water systems sampled under EPA's Fifth Unregulated Contaminant Monitoring Rule. Click a county to see every water system serving it, or turn on service areas and click a location to see the systems that serve that spot.
41 of the 769 public water systems listed for Maine were sampled. Sorted by the highest single result relative to EPA's 2024 limits. Each name links to a page with all of that system's results. All 769 Maine systems, including those not tested · Download all Maine results (CSV, gzip)
| System | PWSID | City | Population | PFOA (ppt) | PFOS (ppt) | HI | Highest single result |
|---|---|---|---|---|---|---|---|
| Yarmouth Water District | ME0091670 | Yarmouth | 8,000 | 9.2 | <MRL | 0 | PFOA 1–3 × its limit |
| Sanford Water District | ME0091410 | Sanford | 14,328 | 6.8 | 7.1 | 0.33 | PFOS 1–3 × its limit |
| Kennebec Water District | ME0090750 | Waterville | 22,060 | 6.4 | <MRL | 0 | PFOA 1–3 × its limit |
| Lisbon Water Department | ME0090870 | Lisbon | 6,643 | 4.1 | <MRL | 1.32 | Hazard Index 1–3 × its limit |
| Houlton Water Company | ME0090700 | Houlton | 4,735 | <MRL | 4.8 | 0 | PFOS 1–3 × its limit |
| Gardiner Water District | ME0090610 | Gardiner | 9,000 | <MRL | <MRL | 0.42 | Hazard Index below its limit |
| Franklin Water Department | ME0090570 | Franklin | 420 | <MRL | <MRL | 0.33 | Hazard Index below its limit |
| Belfast Water District | ME0090140 | Belfast | 5,698 | <MRL | <MRL | 0 | Other PFAS detected |
| Msad 06 Bonny Eagle Middle School | ME0000147 | Buxton | 800 | <MRL | <MRL | 0 | Other PFAS detected |
| Town Of Bar Harbor- Water Division | ME0090120 | Bar Harbor | 4,443 | <MRL | <MRL | 0 | Other PFAS detected |
| Anson And Madison Water District | ME0090930 | Richmond | 5,568 | <MRL | <MRL | 0 | No PFAS detected |
| Auburn Water District | ME0090070 | Lisbon | 17,245 | <MRL | <MRL | 0 | No PFAS detected |
| Bangor Water District | ME0090110 | Bangor | 27,298 | <MRL | <MRL | 0 | No PFAS detected |
| Bath Water District | ME0090130 | Bath | 9,205 | <MRL | <MRL | 0 | No PFAS detected |
| Boothbay Region Water District | ME0090200 | Boothbay | 8,448 | <MRL | <MRL | 0 | No PFAS detected |
| Brewer Water Department | ME0090220 | Brewer | 8,860 | <MRL | <MRL | 0 | No PFAS detected |
| Brunswick/Topsham Water District | ME0090260 | Topsham | 18,863 | <MRL | <MRL | 0 | No PFAS detected |
| Caribou Utilities District | ME0090320 | Caribou | 3,943 | <MRL | <MRL | 0 | No PFAS detected |
| Ellsworth Water Department | ME0090520 | Ellsworth | 3,910 | <MRL | <MRL | 0 | No PFAS detected |
| Farmington Village Corp Water Dept | ME0090540 | Farmington | 4,050 | <MRL | <MRL | 0 | No PFAS detected |
| Greater Augusta Utility District | ME0090080 | Augusta | 13,750 | <MRL | <MRL | 0 | No PFAS detected |
| Hampden Water District | ME0090660 | Hampden | 4,800 | <MRL | <MRL | 0 | No PFAS detected |
| Kennebunk, Kennebunkport & Wells Wd | ME0090760 | Kennebunk | 35,663 | <MRL | <MRL | 0 | No PFAS detected |
| Kittery Water District | ME0090790 | Kittery | 14,478 | <MRL | <MRL | 0 | No PFAS detected |
| Lake Arrowhead Community Inc | ME0090811 | North Waterboro | 3,500 | <MRL | <MRL | 0 | No PFAS detected |
| Lewiston Water & Sewer Division | ME0090830 | Lewiston | 23,720 | <MRL | <MRL | 0 | No PFAS detected |
| Maine Water Company Biddeford Saco Div | ME0090170 | Poland | 42,508 | <MRL | <MRL | 0 | No PFAS detected |
| Maine Water Company Camden & Rockland | ME0090300 | Poland | 21,315 | <MRL | <MRL | 0 | No PFAS detected |
| Maine Water Company Millinocket Division | ME0090990 | Poland | 5,400 | <MRL | <MRL | 0 | No PFAS detected |
| Maine Water Company Skowhegan Division | ME0091450 | Poland | 6,105 | <MRL | <MRL | 0 | No PFAS detected |
| Old Town Water District | ME0091200 | Old Town | 7,648 | <MRL | <MRL | 0 | No PFAS detected |
| Orono-Veazie Water District | ME0091210 | Orono | 5,793 | <MRL | <MRL | 0 | No PFAS detected |
| Portland Water District-Greater | ME0091300 | Portland | 135,068 | <MRL | <MRL | 0 | No PFAS detected |
| Presque Isle Utilities District | ME0091310 | Presque Isle | 6,128 | <MRL | <MRL | 0 | No PFAS detected |
| Rumford Water District | ME0091380 | Rumford | 4,050 | <MRL | <MRL | 0 | No PFAS detected |
| Saco River Apartments | ME0092710 | Rowley | 30 | <MRL | <MRL | 0 | No PFAS detected |
| South Berwick Water District | ME0091470 | South Berwick | 3,722 | <MRL | <MRL | 0 | No PFAS detected |
| Us Border Station-Long Pond Rd-Jackman | ME0092559 | Lincoln | 26 | <MRL | <MRL | 0 | No PFAS detected |
| Van Buren Water District | ME0091540 | Van Buren | 2,190 | <MRL | <MRL | 0 | No PFAS detected |
| Vinalhaven Water District | ME0091550 | Poland | 1,053 | <MRL | <MRL | 0 | No PFAS detected |
| York Water District | ME0091680 | York | 13,675 | <MRL | <MRL | 0 | No PFAS detected |
Highest single result for each system; PFOA and PFOS in ppt (ng/L). Entry-point samples, not tap water; screening comparisons, not compliance determinations.