Portland Water Quality
Maine
The tap water in Portland, Maine is served by 14 EPA-regulated water systems covering approximately 137,052 people. 11 health-based violations are on record, most recently for 1005 in 2024. Data source: EPA Safe Drinking Water Information System.
Drinking water in Portland, Maine is delivered through 14 EPA-regulated community water systems serving an estimated 137,052 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
The SDWIS record for Portland shows 11 total violations across all 14 systems, of which 11 are health-based, meaning either a Maximum Contaminant Level (MCL) was exceeded or a required treatment technique was not followed. Contaminants cited in health-based violations include 1005, 5000. 4 TRI-reporting industrial facilities are also located within the city limits.
A past EPA violation does not mean the water is currently unsafe, utilities are required to notify customers and remediate under state primacy oversight. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Maine drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| PORTLAND WATER DISTRICT-GREATER | 135,068 | 0 | Clean |
| PEQUOT HIGHLANDS | 900 | 0 | Clean |
| PORTLAND WATER DISTRICT/STEEP FALLS | 480 | 0 | Clean |
| MEADOWS AT GRAPEVINE RUN | 100 | 0 | Clean |
| SQUIRE COURT LLC | 75 | 3 | Health |
| DUCK-A-WAY ON CASCO BAY | 65 | 0 | Clean |
| TURNER SQUARE APARTMENTS | 63 | 0 | Clean |
| PINES MOBILE HOME PARK LLC | 50 | 0 | Clean |
| SANDY CREEK HOUSING | 50 | 2 | Health |
| HARMON PINES DEVELOPMENT | 50 | 6 | Health |
| COUNTRY VIEW APARTMENTS | 40 | 0 | Clean |
| APPLEWOOD | 40 | 0 | Clean |
| ELWELL FARMS | 36 | 0 | Clean |
| BROOK HOLLOW | 35 | 0 | Clean |
Does this city have health-based water violations?
Health-based violations indicate contaminant levels that exceeded EPA maximum contaminant levels (MCLs). This does not necessarily mean water is currently unsafe.
| Contaminant | Begin Date |
|---|---|
| 1005 | 2024-10-01 |
| 1005 | 2024-10-01 |
| 1005 | 2024-07-01 |
| 1005 | 2024-07-01 |
| 1005 | 2024-07-01 |
| 1005 | 2024-07-01 |
| - | 2023-03-01 |
| - | 2023-03-01 |
| 5000 | 2022-07-01 |
| 5000 | 2022-07-01 |
| 5000 | 2022-07-01 |
TRI Facilities in Portland
| Facility | Total Releases |
|---|---|
| Nichols Portland | 17.0K lbs |
| Maine Standard Biofuels | 5.3K lbs |
| B&g Foods Na Inc (burnham & Morrill Co Division) | 0 lbs |
| Barber Foods | 0 lbs |
Frequently Asked Questions
Is Portland, Maine water safe to drink? ▼
How many water violations does Portland have? ▼
What contaminants were found in Portland water? ▼
How many water systems serve Portland? ▼
Where does Portland get its drinking water? ▼
Are there pollution sources near Portland? ▼
About This Data
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). Violations are reported by state agencies to EPA and include both health-based (MCL exceedances) and monitoring/reporting violations.
A reported violation does not necessarily mean water is currently unsafe to drink. Many violations are resolved quickly, and public water systems are required to notify customers of significant issues. For current water quality, contact your local water utility.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.