Cooke City Water District
PWSID: MT0000187
System Details
| Population Served | 300 |
| Service Connections | 98 |
| Water Source | Groundwater |
| System Type | Community Water System |
| Owner | Local Government |
| Status | Active |
| City | Cooke City |
| Zip Code | 59020 |
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|
| Lead (90th percentile) | 0.0030 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0024 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0020 mg/L | 0.015 mg/L | Below Action Level |
Violation History (144 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|
| | 2025-07-01 | | Returned to Compliance |
| | 2025-07-01 | | Returned to Compliance |
| | 2024-07-01 | | Returned to Compliance |
| | 2024-07-01 | | Returned to Compliance |
| | 2023-10-01 | | Returned to Compliance |
| | 2023-10-01 | | Returned to Compliance |
| | 2023-05-01 | Major | Acknowledged |
| | 2023-05-01 | Major | Returned to Compliance |
| | 2023-05-01 | Major | Returned to Compliance |
| | 2022-07-01 | | Returned to Compliance |
| | 2022-07-01 | | Returned to Compliance |
| | 2021-01-01 | Major | Returned to Compliance |
| | 2020-10-01 | Major | Returned to Compliance |
| | 2020-09-01 | Major | Returned to Compliance |
| | 2020-07-01 | | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-04-01 | Major | Returned to Compliance |
| | 2020-01-01 | Major | Returned to Compliance |
| | 2020-01-01 | Major | Returned to Compliance |
| | 2020-01-01 | Major | Returned to Compliance |
| | 2020-01-01 | Major | Returned to Compliance |
| | 2020-01-01 | Major | Returned to Compliance |
| | 2020-01-01 | Major | Returned to Compliance |
| | 2020-01-01 | Major | Returned to Compliance |
| | 2020-01-01 | Major | Returned to Compliance |
| | 2020-01-01 | Major | Returned to Compliance |
| | 2020-01-01 | Major | Returned to Compliance |
| | 2020-01-01 | Major | Returned to Compliance |
| | 2020-01-01 | Major | Returned to Compliance |
Showing 50 of 144 historical violations.