Helena Water Quality
Montana
According to EPA SDWIS, Helena, Montana is served by 40 community water systems covering about 39,704 people. The same extract lists 80 health-based violation records, most recently coded 8000 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Helena, Montana is delivered through 40 EPA-regulated community water systems serving an estimated 39,704 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.
PlainEnviro's health-based SDWIS extract shows 80 violation records across the 40 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 6 distinct EPA contaminant codes: Revised Total Coliform Rule, Total Haloacetic Acids (HAA5), Lead and Copper Rule, TTHM, Arsenic and 1 others. 3 TRI-reporting industrial facilities are also located within the city limits.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. 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 | 2 | 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 |
| SMITH MCHUGH #2 BLR | 68 | 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 |
| SOUTHERN CROSS PUD | 25 | 0 | Clean |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| HOLMBERG VILLAGE ESTATES | Revised Total Coliform Rule | 2025-10-23 |
| HOLMBERG VILLAGE ESTATES | Revised Total Coliform Rule | 2025-10-23 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2024-07-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2024-07-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2024-07-01 |
| TEN MILE AND PLEASANT VALLEY WUA | Lead and Copper Rule | 2024-04-01 |
| TEN MILE AND PLEASANT VALLEY WUA | Lead and Copper Rule | 2024-04-01 |
| TEN MILE AND PLEASANT VALLEY WUA | Lead and Copper Rule | 2024-04-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2024-01-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2024-01-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2024-01-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2024-01-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2023-10-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2023-10-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2023-10-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2023-10-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2023-07-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2023-07-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2023-07-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2023-07-01 |
| JEFFERSON HILLS WUA | Revised Total Coliform Rule | 2023-06-03 |
| JEFFERSON HILLS WUA | Revised Total Coliform Rule | 2023-06-03 |
| RYAN DAM WATER SYSTEM | Revised Total Coliform Rule | 2023-05-24 |
| RYAN DAM WATER SYSTEM | Revised Total Coliform Rule | 2023-05-24 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2023-04-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2023-04-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2023-04-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2023-04-01 |
| HELENA WATER SYSTEM | Total Haloacetic Acids (HAA5) | 2023-01-01 |
| HELENA WATER SYSTEM | Total Haloacetic Acids (HAA5) | 2023-01-01 |
| HELENA WATER SYSTEM | Total Haloacetic Acids (HAA5) | 2023-01-01 |
| HELENA WATER SYSTEM | Total Haloacetic Acids (HAA5) | 2023-01-01 |
| HELENA WATER SYSTEM | Total Haloacetic Acids (HAA5) | 2022-10-01 |
| HELENA WATER SYSTEM | Total Haloacetic Acids (HAA5) | 2022-10-01 |
| HELENA WATER SYSTEM | Total Haloacetic Acids (HAA5) | 2022-10-01 |
| HELENA WATER SYSTEM | Total Haloacetic Acids (HAA5) | 2022-10-01 |
| HELENA WATER SYSTEM | Total Haloacetic Acids (HAA5) | 2022-07-01 |
| HELENA WATER SYSTEM | Total Haloacetic Acids (HAA5) | 2022-07-01 |
| HELENA WATER SYSTEM | Total Haloacetic Acids (HAA5) | 2022-07-01 |
| HELENA WATER SYSTEM | Total Haloacetic Acids (HAA5) | 2022-07-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2021-04-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2021-01-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2020-10-01 |
| GLACIER POINT HO AND WUA | Revised Total Coliform Rule | 2020-08-26 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2020-07-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2020-04-01 |
| NCMRWA TIBER SERVICE AREA | TTHM | 2020-01-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2020-01-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2019-10-01 |
| NCMRWA TIBER SERVICE AREA | Total Haloacetic Acids (HAA5) | 2019-07-01 |
What are Helena's health-based records for?
Helena's health-based violation records carry 6 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Total Haloacetic Acids (HAA5) | 40 | 2 |
| Arsenic | 26 | 1 |
| Revised Total Coliform Rule | 7 | 4 |
| Lead and Copper Rule | 5 | 3 |
| Tthm | 1 | 1 |
| Coliform (TCR) | 1 | 1 |
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
What does EPA SDWIS list for drinking water in Helena, Montana? ▼
How many water violations does Helena have in this EPA extract? ▼
What contaminants were found in Helena water? ▼
How many water systems serve Helena? ▼
Where does Helena get its drinking water? ▼
Are there pollution sources near Helena? ▼
How does Helena compare in Montana?
Of the 217 Montana places with at least one community water system on file, Helena ranks #3 by number of systems (40).
Either side of it: Missoula (75), Kalispell (71), Billings (39), Bozeman (28)
About This Data
Figures here are the current EPA SDWIS extract joined to the 40 community water systems whose service area lists Helena, ranked against the 217 Montana places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
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.