Billings Water Quality
Montana
The tap water in Billings, Montana is served by 38 EPA-regulated water systems covering approximately 139,821 people. 28 health-based violations are on record, most recently for 1038 in 2025. Data source: EPA Safe Drinking Water Information System.
Drinking water in Billings, Montana is delivered through 38 EPA-regulated community water systems serving an estimated 139,821 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 Billings shows 28 total violations across all 38 systems, of which 28 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 1038, 5200, 0700, 5000. 15 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 |
|---|---|---|---|
| BILLINGS CITY OF | 114,000 | 0 | Clean |
| CO WATER DIST OF BILLINGS HEIGHTS | 12,000 | 0 | Clean |
| LOCKWOOD WATER AND SEWER DISTRICT | 5,900 | 0 | Clean |
| PIONEER WATER SERVICE | 900 | 0 | Clean |
| FISHER WATER SERVICE | 750 | 0 | Clean |
| CHERRY CREEK ESTATES LLC | 600 | 0 | Clean |
| SUNDANCE SUBDIVISION | 378 | 0 | Clean |
| STONE CREEK SUBDIVISION | 378 | 0 | Clean |
| HIDDEN LAKE YELLOWSTONE COUNTY W AND S D | 350 | 0 | Clean |
| EMERALD VIEW PARK | 320 | 0 | Clean |
| SHILOH ROAD DEVELOPMENT | 315 | 0 | Clean |
| MOUNTAIN MEADOWS ESTATES LLP | 300 | 0 | Clean |
| MOBILE CITY HOME PARK NO 2 | 300 | 0 | Clean |
| PRECISION WATER | 250 | 0 | Clean |
| GRANITE PARK WATER ASSOCIATION | 250 | 3 | Health |
| ORLAND ESTATES MOBILE H.P. | 244 | 1 | Health |
| YELLOWSTONE BOYS AND GIRLS RANCH | 240 | 0 | Clean |
| WELLS GARDEN ESTATES | 240 | 0 | Clean |
| CRYSTAL SPRINGS WATER SYSTEM | 225 | 15 | Health |
| THE NINES SUBDIVISION | 220 | 0 | Clean |
| OAK RIDGE ESTATES | 200 | 0 | Clean |
| STILL RIVER ESTATES SUBDIVISION | 188 | 2 | Health |
| C & C COMMUNITY INC | 145 | 0 | Clean |
| GOLDEN EAGLE WATER USERS ASSN | 125 | 1 | Health |
| MOBILE CITY HOME PARK NO 1 | 100 | 0 | Clean |
| ALDINGER ACRES SUBDIVISION | 100 | 0 | Clean |
| ERICS EMERGENCY WATER SERVICE | 100 | 0 | Clean |
| PEKS MOBILE HOME COURT | 95 | 0 | Clean |
| WESTANA MOBILE MANOR HAMILTON | 90 | 0 | Clean |
| BLACK ROCK ESTATES SUBDIVISION | 75 | 0 | Clean |
| MIDWAY TOWNHOMES WUA | 75 | 0 | Clean |
| DUCK CREEK MOBILE HOME PARK | 70 | 6 | Health |
| SKYCREST ESTATES SUBDIVISION | 65 | 0 | Clean |
| BLUE GRASS WATER USERS ASSOCIATION | 60 | 0 | Clean |
| DOUBLE DIAMOND SUBDIVISION ARBOR HILLS | 50 | 0 | Clean |
| SPRUCE PARK MOBILE VILLAGE | 48 | 0 | Clean |
| MOBILE CITY 3 | 40 | 0 | Clean |
| SARTORIE LEGACY HOMES | 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 |
|---|---|
| 1038 | 2025-07-01 |
| 1038 | 2025-01-01 |
| 1038 | 2025-01-01 |
| 5200 | 2024-10-17 |
| 1038 | 2024-10-01 |
| 1038 | 2024-10-01 |
| 1038 | 2024-10-01 |
| 1038 | 2024-10-01 |
| 1038 | 2024-07-01 |
| 1038 | 2024-07-01 |
| 1038 | 2024-07-01 |
| 1038 | 2024-04-01 |
| 1038 | 2024-04-01 |
| 1038 | 2024-01-01 |
| 1038 | 2024-01-01 |
| 1038 | 2024-01-01 |
| 1038 | 2024-01-01 |
| 1038 | 2024-01-01 |
| 1038 | 2023-10-01 |
| 1038 | 2023-10-01 |
| 1038 | 2023-01-01 |
| 1038 | 2023-01-01 |
| 1038 | 2020-01-01 |
| 1038 | 2019-04-01 |
| 1038 | 2019-01-01 |
| 0700 | 2018-12-01 |
| 1038 | 2018-10-01 |
| 5000 | 2009-03-21 |
TRI Facilities in Billings
| Facility | Total Releases |
|---|---|
| Par Montana Billings Refinery | 881.7K lbs |
| Western Sugar COOPERATIVE.130130 | 582.2K lbs |
| Jupiter Sulphur LLC | 539.8K lbs |
| Phillips 66 Co Billings Refinery | 465.0K lbs |
| Montana Sulphur & Chemical Co | 75.6K lbs |
| Brenntag Pacific Inc Mossmain Ln | 20.0K lbs |
| Loveland Products Inc-Billings (formerly Transbas) | 3.2K lbs |
| Jtl Group Billings (dba - Knife River Billings) | 1.9K lbs |
| Knife River Billings East Site | 750 lbs |
| Western Emulsions Inc Billings Plant | 8 lbs |
Frequently Asked Questions
Is Billings, Montana water safe to drink? ▼
How many water violations does Billings have? ▼
What contaminants were found in Billings water? ▼
How many water systems serve Billings? ▼
Where does Billings get its drinking water? ▼
Are there pollution sources near Billings? ▼
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.