PFAS in Maine drinking water
38 community water systems tested
13.2%
of tested systems detected PFOA or PFOS
(5/38)
(5/38)
Water systems
PFAS value per system, 2023–2025. EPA limit — 4 ppt (0.004 µg/L) for PFOA and PFOS, set in 2024. Systems that detected PFOA or PFOS
are highlighted and listed first. “Not detected” means the contaminant was measured but
not found.
| System | City | Population | PFAS (ug/L) |
|---|---|---|---|
| YARMOUTH WATER DISTRICT | NORTH YARMOUTH | 8,000 | 0.0092 ug/L |
| SANFORD WATER DISTRICT | SANFORD | 14,328 | 0.0071 ug/L |
| KENNEBEC WATER DISTRICT | FAIRFIELD | 22,060 | 0.0064 ug/L |
| HOULTON WATER COMPANY | HOULTON | 4,735 | 0.0048 ug/L |
| LISBON WATER DEPARTMENT | LISBON | 6,643 | 0.0041 ug/L |
| PORTLAND WATER DISTRICT-GREATER | CAPE ELIZABETH | 135,068 | Not detected |
| MAINE WATER COMPANY BIDDEFORD SACO DIV | BIDDEFORD | 42,508 | Not detected |
| KENNEBUNK, KENNEBUNKPORT & WELLS WD | KENNEBUNK | 35,663 | Not detected |
| BANGOR WATER DISTRICT | BANGOR | 27,298 | Not detected |
| LEWISTON WATER & SEWER DIVISION | LEWISTON | 23,720 | Not detected |
| MAINE WATER COMPANY CAMDEN & ROCKLAND | CAMDEN | 21,315 | Not detected |
| BRUNSWICK/TOPSHAM WATER DISTRICT | BRUNSWICK | 18,863 | Not detected |
| AUBURN WATER DISTRICT | AUBURN | 17,245 | Not detected |
| KITTERY WATER DISTRICT | KITTERY | 14,478 | Not detected |
| GREATER AUGUSTA UTILITY DISTRICT | AUGUSTA | 13,750 | Not detected |
| YORK WATER DISTRICT | YORK | 13,675 | Not detected |
| BATH WATER DISTRICT | BATH | 9,205 | Not detected |
| GARDINER WATER DISTRICT | GARDINER | 9,000 | Not detected |
| BREWER WATER DEPARTMENT | BREWER | 8,860 | Not detected |
| BOOTHBAY REGION WATER DISTRICT | BOOTHBAY | 8,448 | Not detected |
| OLD TOWN WATER DISTRICT | OLD TOWN | 7,648 | Not detected |
| PRESQUE ISLE UTILITIES DISTRICT | PRESQUE ISLE | 6,128 | Not detected |
| MAINE WATER COMPANY SKOWHEGAN DIVISION | SKOWHEGAN | 6,105 | Not detected |
| ORONO-VEAZIE WATER DISTRICT | ORONO | 5,793 | Not detected |
| BELFAST WATER DISTRICT | BELFAST | 5,698 | Not detected |
| ANSON AND MADISON WATER DISTRICT | ANSON | 5,568 | Not detected |
| MAINE WATER COMPANY MILLINOCKET DIVISION | MILLINOCKET | 5,400 | Not detected |
| HAMPDEN WATER DISTRICT | HAMPDEN | 4,628 | Not detected |
| TOWN OF BAR HARBOR- WATER DIVISION | BAR HARBOR | 4,443 | Not detected |
| FARMINGTON VILLAGE CORP WATER DEPT | FARMINGTON | 4,050 | Not detected |
| RUMFORD WATER DISTRICT | RUMFORD | 4,050 | Not detected |
| CARIBOU UTILITIES DISTRICT | CARIBOU | 3,943 | Not detected |
| ELLSWORTH WATER DEPARTMENT | ELLSWORTH | 3,910 | Not detected |
| SOUTH BERWICK WATER DISTRICT | BERWICK | 3,722 | Not detected |
| LAKE ARROWHEAD COMMUNITY INC | WATERBORO | 3,500 | Not detected |
| VAN BUREN WATER DISTRICT | VAN BUREN | 2,190 | Not detected |
| VINALHAVEN WATER DISTRICT | VINALHAVEN | 1,053 | Not detected |
| FRANKLIN WATER DEPARTMENT | FRANKLIN | 443 | Not detected |