Helena Water Quality
Montana
The tap water in Helena, Montana is served by 38 EPA-regulated water systems covering approximately 39,611 people. 79 health-based violations are on record, most recently for 8000 in 2025. Data source: EPA Safe Drinking Water Information System.
Drinking water in Helena, Montana is delivered through 38 EPA-regulated community water systems serving an estimated 39,611 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 Helena shows 79 total violations across all 38 systems, of which 79 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 8000, 2456, 5000, 2950, 1005 and 1 others. 3 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 Montana 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 |
|---|---|---|---|
| HELENA WATER SYSTEM | 32,091 | 12 | Health |
| HELENA LEISURE LLC | 1,200 | 0 | Clean |
| JEFFERSON HILLS WUA | 780 | 2 | Health |
| TEN MILE AND PLEASANT VALLEY WUA | 750 | 3 | Health |
| NORTH STAR PUD | 715 | 0 | Clean |
| TREASURE STATE ACRES WUA | 483 | 0 | Clean |
| NCMRWA NORTH SHELBY | 300 | 0 | Clean |
| RANCHVIEW ESTATES WUA | 250 | 0 | Clean |
| RYAN DAM WATER SYSTEM | 230 | 2 | Health |
| HOLMBERG VILLAGE ESTATES | 225 | 1 | Health |
| GLACIER POINT HO AND WUA | 210 | 1 | Health |
| NCMRWA TIBER SERVICE AREA | 200 | 29 | Health |
| TOWN VIEW ESTATES WUA INC | 175 | 0 | Clean |
| MOUNTAIN HERITAGE WATER SYSTEM | 175 | 0 | Clean |
| PRAIRIE MOBILE VILLAGE | 163 | 0 | Clean |
| NCMRWA PONDERA CO SERVICE AREA | 144 | 0 | Clean |
| BRYANT NO 3 SUBDIVISION | 100 | 0 | Clean |
| SHADE TREE MOBILE PARK | 100 | 0 | Clean |
| NORTH FORESTVALE HOMEOWNERS | 98 | 0 | Clean |
| CAMEL MOUNTAIN HOA | 96 | 0 | Clean |
| CAMELOT HOA | 96 | 0 | Clean |
| PIEGAN BORDER STATION | 94 | 1 | Health |
| NCMRWA NORTH HAVRE CWD LEG | 90 | 0 | Clean |
| APPLEGATE VILLAGE | 85 | 0 | Clean |
| SOUTH FORESTVALE HOA | 82 | 1 | Health |
| MITCHELL COURT APARTMENTS | 80 | 0 | Clean |
| RIVERS EDGE MOBILE HOME PARK GRT FLS | 75 | 0 | Clean |
| BARNETT WATER USERS SYSTEM | 70 | 0 | Clean |
| NCMRWA SHELBY TO ETHRIDGE | 70 | 0 | Clean |
| BLUE CLOUD SUBDIVISION | 60 | 26 | Health |
| BIG STACK ESTATES | 60 | 0 | Clean |
| BEACON TRAILER COURT HELENA | 55 | 1 | Health |
| GRAND VALLEY ESTATES SUBDIVISION | 50 | 0 | Clean |
| MOONLIGHT ESTATES HOA | 44 | 0 | Clean |
| TRAILS END TR PARK HELENA | 35 | 0 | Clean |
| ROSEMARYS ADDITION | 30 | 0 | Clean |
| WESTERN SKIES MOBILE CT | 25 | 0 | Clean |
| NCMRWA ETHERIDGE TO CUTBANK | 25 | 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 |
|---|---|
| 8000 | 2025-10-23 |
| 2456 | 2024-07-01 |
| 2456 | 2024-07-01 |
| 2456 | 2024-07-01 |
| 5000 | 2024-04-01 |
| 5000 | 2024-04-01 |
| 5000 | 2024-04-01 |
| 2456 | 2024-01-01 |
| 2456 | 2024-01-01 |
| 2456 | 2024-01-01 |
| 2456 | 2024-01-01 |
| 2456 | 2023-10-01 |
| 2456 | 2023-10-01 |
| 2456 | 2023-10-01 |
| 2456 | 2023-10-01 |
| 2456 | 2023-07-01 |
| 2456 | 2023-07-01 |
| 2456 | 2023-07-01 |
| 2456 | 2023-07-01 |
| 8000 | 2023-06-03 |
| 8000 | 2023-06-03 |
| 8000 | 2023-05-24 |
| 8000 | 2023-05-24 |
| 2456 | 2023-04-01 |
| 2456 | 2023-04-01 |
| 2456 | 2023-04-01 |
| 2456 | 2023-04-01 |
| 2456 | 2023-01-01 |
| 2456 | 2023-01-01 |
| 2456 | 2023-01-01 |
| 2456 | 2023-01-01 |
| 2456 | 2022-10-01 |
| 2456 | 2022-10-01 |
| 2456 | 2022-10-01 |
| 2456 | 2022-10-01 |
| 2456 | 2022-07-01 |
| 2456 | 2022-07-01 |
| 2456 | 2022-07-01 |
| 2456 | 2022-07-01 |
| 2456 | 2021-04-01 |
| 2456 | 2021-01-01 |
| 2456 | 2020-10-01 |
| 8000 | 2020-08-26 |
| 2456 | 2020-07-01 |
| 2456 | 2020-04-01 |
| 2950 | 2020-01-01 |
| 2456 | 2020-01-01 |
| 2456 | 2019-10-01 |
| 2456 | 2019-07-01 |
| 2456 | 2019-04-01 |
TRI Facilities in Helena
| Facility | Total Releases |
|---|---|
| Helena Sand & Gravel Inc | 55 lbs |
| Forterra Concrete Products - Helena | 0 lbs |
| Boeing Helena Inc | 0 lbs |
Frequently Asked Questions
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How many water violations does Helena have? ▼
What contaminants were found in Helena water? ▼
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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.