RIMROCK COLONY
Montana — Community Water System — PWSID: MT0001783
System Information
| PWSID | MT0001783 |
| System Name | RIMROCK COLONY |
| 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 | Mar 5, 1980 |
| Last Reported | Jan 5, 2026 |
Location & Contact
| State | Montana |
| City | SUNBURST |
| ZIP Code | 59482 |
| Address | PO BOX 159 |
| Organization | WURZ, STEVE J |
| Phone | 406-952-6746 |
Population & Service
| Population Served | 124 |
| Service Connections | 8 |
Drinking Water Violations (7)
This water system has 7 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 20, 2023 | — | E. COLI | MR | No | Yes | — | — | — | Resolved | Nov 6, 2023 | Ground Water Rule |
| Sep 20, 2023 | — | E. COLI | MR | No | Yes | — | — | — | Resolved | Nov 6, 2023 | Ground Water Rule |
| Sep 20, 2023 | — | E. COLI | MR | No | Yes | — | — | — | Resolved | Nov 6, 2023 | Ground Water Rule |
| Dec 1, 2020 | Dec 31, 2020 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Dec 31, 2020 | Revised Total Coliform Rule |
| Dec 1, 2020 | Dec 31, 2020 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Dec 31, 2020 | Revised Total Coliform Rule |
| Dec 1, 2020 | Dec 31, 2020 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Dec 31, 2020 | Revised Total Coliform Rule |
| Jul 1, 1992 | Jul 31, 1992 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 1992 | Total Coliform Rule |
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.