BLACK ROCK ESTATES SUBDIVISION
Montana — Community Water System — PWSID: MT0004881
System Information
| PWSID | MT0004881 |
| System Name | BLACK ROCK ESTATES SUBDIVISION |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Dec 28, 2018 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Montana |
| City | BILLINGS |
| ZIP Code | 59101 |
| Address | 420 NORTH 17TH STREET |
| Organization | STONE, SPENCER M |
| Phone | 406-652-5523 |
Population & Service
| Population Served | 75 |
| Service Connections | 57 |
Drinking Water Violations (80)
This water system has 80 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2023 | — | Other | No | No | — | — | — | Resolved | Jul 5, 2023 | — | |
| Jul 1, 2023 | — | Other | No | No | — | — | — | Resolved | Jul 5, 2023 | — | |
| Oct 1, 2021 | — | MR | No | No | — | TT | — | Resolved | Sep 22, 2022 | — | |
| Oct 1, 2021 | — | MR | No | No | — | TT | — | Resolved | Sep 22, 2022 | — | |
| Oct 1, 2021 | — | MR | No | No | — | TT | — | Resolved | Sep 22, 2022 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.5 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.4 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.4 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.4 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.003 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.04 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.04 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.04 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.04 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.5 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.5 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.003 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.001 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.0004 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.0004 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | 0.0004 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | — | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MR | No | Yes | — | — | — | Resolved | Sep 30, 2019 | — |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.