Black Rock Estates Subdivision
PWSID: MT0004881
System Details
| Population Served | 75 |
| Service Connections | 57 |
| Water Source | Groundwater |
| System Type | Community Water System |
| Owner | Private |
| Status | Active |
| City | Billings |
| Zip Code | 59101 |
Areas Served
- Billings, Yellowstone County
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|
| Lead (90th percentile) | 0.0080 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0020 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0010 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0000 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0000 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0000 mg/L | 0.015 mg/L | Below Action Level |
Violation History (30 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|
| | 2023-07-01 | | Returned to Compliance |
| | 2023-07-01 | | Returned to Compliance |
| | 2021-10-01 | | Returned to Compliance |
| | 2021-10-01 | | Returned to Compliance |
| | 2021-10-01 | | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |
| | 2019-07-01 | Major | Returned to Compliance |