By State · ME
Based on EPA UCMR 5 testing of 14 public water systems with PFAS detected in Maine.
See Maine on the national heatmapState totals reflect systems with at least one PFAS detection in UCMR 5 (the canonical EPA dataset). The 6,151 national total includes ~123 additional systems in US territories and on tribal lands not browsable as state pages.
Most contaminated in Maine
5 Maine water systems tested above EPA PFAS limits. The most severe is YARMOUTH WATER DISTRICT, where PFOA measured 9.2 ppt — 2.3× the federal limit.
State context
Industrial context
Maine has emerged as a national focal point for PFAS contamination via biosolids — historical land-spreading of municipal sewage sludge has contaminated farmland and private wells across the state, particularly in the central agricultural belt.
Regulatory stance
Maine has been among the most aggressive state-level PFAS regulators in the US. In 2021, Maine banned PFAS in most consumer products (with phase-out timelines); the state has its own drinking-water Maximum Exposure Guideline for PFAS.
Notable sites
Farms in Fairfield, Unity, and other central Maine communities have been forced to halt operations after PFAS detections in soil and water traceable to biosolid land application.
Editorial summary compiled from public DoD, EPA, and state agency disclosures. Not a comprehensive site inventory — for the authoritative list of PFAS investigation locations in Maine, consult your state environmental agency.
Systems with detections · EPA UCMR 5 (2023–2025)
Get specific results for your neighborhood's water utility.
| Water System ↕ | PWSID | PFAS Detected ↕ | Above MCL ↕ | Risk |
|---|---|---|---|---|
| SANFORD WATER DISTRICT Groundwater | ME0091410 | 7 | 2 | High Risk |
| LISBON WATER DEPARTMENT Groundwater | ME0090870 | 6 | 2 | High Risk |
| YARMOUTH WATER DISTRICT Groundwater | ME0091670 | 5 | 1 | High Risk |
| KENNEBEC WATER DISTRICT Surface Water | ME0090750 | 4 | 1 | High Risk |
| HOULTON WATER COMPANY Groundwater | ME0090700 | 1 | 1 | High Risk |
| FRANKLIN WATER DEPARTMENT, ME Groundwater | ME0090570 | 4 | 0 | Low Level |
| BELFAST WATER DISTRICT Groundwater | ME0090140 | 3 | 0 | Low Level |
| GARDINER WATER DISTRICT Groundwater | ME0090610 | 3 | 0 | Low Level |
| MSAD 06 BONNY EAGLE MIDDLE SCHOOL Groundwater | ME0000147 | 2 | 0 | Low Level |
| TOWN OF BAR HARBOR- WATER DIVISION Surface Water | ME0090120 | 2 | 0 | Low Level |
| BRUNSWICK / TOPSHAM WATER DISTRICT Groundwater | ME0090260 | 1 | 0 | Low Level |
| LAKE ARROWHEAD COMMUNITY INC Groundwater | ME0090811 | 1 | 0 | Low Level |
| US BORDER STATION-LONG POND RD-JACKMAN Groundwater | ME0092559 | 1 | 0 | Low Level |
| SACO RIVER APARTMENTS Groundwater | ME0092710 | 1 | 0 | Low Level |
Click any row to see ZIP-level details. Click PWSID to see the full utility page.
Test your water
EPA UCMR 5 tested 14 public water systems in Maine — but at the utility entry point, not your tap. Aging pipes and indoor plumbing can change what reaches your home, and private wells aren't covered by UCMR 5 at all. To find out what's actually in your water, test it with a certified lab.
How PFAS water testing works
EPA Method 537.1 in plain English — what a certified lab actually measures
Order a certified mail-in test kit
PFAS mail-in kits from about $85 (Cyclopure, Tap Score)
On a private well in Maine?
Wells aren't covered by EPA testing — your own testing guide
Maine testing resources
Own state limitsCompiled from official Maine state sources. Programs and eligibility change — confirm current details with the agency.
