OILMONT COUNTY WATER DISTRICT
Montana — Community Water System — PWSID: MT0000587
System Information
| PWSID | MT0000587 |
| System Name | OILMONT COUNTY WATER DISTRICT |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| 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 129 |
| Organization | WALLEWEIN, MICHAEL J |
| Phone | 406-937-2775 |
Population & Service
| Population Served | 300 |
| Service Connections | 76 |
Drinking Water Violations (1,105)
This water system has 1,105 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, 2024 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 29, 2024 | Consumer Confidence Rule |
| Jul 1, 2024 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 29, 2024 | Consumer Confidence Rule |
| Jul 1, 2023 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 13, 2023 | Consumer Confidence Rule |
| Jul 1, 2023 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 13, 2023 | Consumer Confidence Rule |
| Sep 1, 2022 | Sep 30, 2022 | Groundwater Rule | MR | No | Yes | — | — | — | Resolved | Sep 30, 2022 | Ground Water Rule |
| Sep 1, 2022 | Sep 30, 2022 | Groundwater Rule | MR | No | Yes | — | — | — | Resolved | Sep 30, 2022 | Ground Water Rule |
| Sep 1, 2022 | Sep 30, 2022 | Groundwater Rule | MR | No | Yes | — | — | — | Resolved | Sep 30, 2022 | Ground Water Rule |
| Sep 1, 2022 | Sep 30, 2022 | Groundwater Rule | MR | No | Yes | — | — | — | Resolved | Sep 30, 2022 | Ground Water Rule |
| Sep 1, 2022 | Sep 30, 2022 | Groundwater Rule | MR | No | Yes | — | — | — | Resolved | Sep 30, 2022 | Ground Water Rule |
| Sep 1, 2022 | Sep 30, 2022 | Groundwater Rule | MR | No | Yes | — | — | — | Resolved | Sep 30, 2022 | Ground Water Rule |
| Sep 1, 2022 | Sep 30, 2022 | Groundwater Rule | MR | No | Yes | — | — | — | Resolved | Sep 30, 2022 | Ground Water Rule |
| Sep 1, 2022 | Sep 30, 2022 | Groundwater Rule | MR | No | Yes | — | — | — | Resolved | Sep 30, 2022 | Ground Water Rule |
| Apr 1, 2021 | Apr 30, 2021 | Groundwater Rule | TT | Yes | No | — | — | — | Resolved | Apr 30, 2021 | Ground Water Rule |
| Apr 1, 2021 | Apr 30, 2021 | Groundwater Rule | TT | Yes | No | — | — | — | Resolved | Apr 30, 2021 | Ground Water Rule |
| Apr 1, 2021 | Apr 30, 2021 | Groundwater Rule | TT | Yes | No | — | — | — | Resolved | Apr 30, 2021 | Ground Water Rule |
| Apr 1, 2021 | Apr 30, 2021 | Groundwater Rule | TT | Yes | No | — | — | — | Resolved | Apr 30, 2021 | Ground Water Rule |
| Mar 1, 2021 | Mar 31, 2021 | Groundwater Rule | TT | Yes | No | — | — | — | Resolved | Mar 31, 2021 | Ground Water Rule |
| Mar 1, 2021 | Mar 31, 2021 | Groundwater Rule | TT | Yes | No | — | — | — | Resolved | Mar 31, 2021 | Ground Water Rule |
| Mar 1, 2021 | Mar 31, 2021 | Groundwater Rule | TT | Yes | No | — | — | — | Resolved | Mar 31, 2021 | Ground Water Rule |
| Mar 1, 2021 | Mar 31, 2021 | Groundwater Rule | TT | Yes | No | — | — | — | Resolved | Mar 31, 2021 | Ground Water Rule |
| Feb 1, 2021 | Feb 28, 2021 | Groundwater Rule | MR | No | Yes | — | — | — | Resolved | Feb 28, 2021 | Ground Water Rule |
| Feb 1, 2021 | Feb 28, 2021 | Groundwater Rule | MR | No | Yes | — | — | — | Resolved | Feb 28, 2021 | Ground Water Rule |
| Feb 1, 2021 | Feb 28, 2021 | Groundwater Rule | MR | No | Yes | — | — | — | Resolved | Feb 28, 2021 | Ground Water Rule |
| Feb 1, 2021 | Feb 28, 2021 | Groundwater Rule | MR | No | Yes | — | — | — | Resolved | Feb 28, 2021 | Ground Water Rule |
| Oct 1, 2020 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Aug 10, 2021 | Lead and Copper Rule |
| Oct 1, 2020 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Aug 10, 2021 | Lead and Copper Rule |
| Oct 1, 2020 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Aug 10, 2021 | Lead and Copper Rule |
| Jul 1, 2020 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 27, 2020 | Consumer Confidence Rule |
| Jul 1, 2020 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 27, 2020 | Consumer Confidence Rule |
| Jan 1, 2020 | Dec 31, 2022 | 1,2,4-Trichlorobenzene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | Volatile Organic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | 1,2,4-Trichlorobenzene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | Volatile Organic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | 1,2,4-Trichlorobenzene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | Volatile Organic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | 1,2,4-Trichlorobenzene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | Volatile Organic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | 1,2,4-Trichlorobenzene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | Volatile Organic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | cis-1,2-Dichloroethylene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | Volatile Organic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | cis-1,2-Dichloroethylene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | Volatile Organic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | 1,2,4-Trichlorobenzene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | Volatile Organic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | 1,2,4-Trichlorobenzene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | Volatile Organic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | cis-1,2-Dichloroethylene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | Volatile Organic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | cis-1,2-Dichloroethylene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | Volatile Organic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | 1,2,4-Trichlorobenzene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | Volatile Organic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | cis-1,2-Dichloroethylene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | Volatile Organic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | cis-1,2-Dichloroethylene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | Volatile Organic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | 1,2,4-Trichlorobenzene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | Volatile Organic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | 1,2,4-Trichlorobenzene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | Volatile Organic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | cis-1,2-Dichloroethylene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | Volatile Organic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | cis-1,2-Dichloroethylene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | Volatile Organic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | cis-1,2-Dichloroethylene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | Volatile Organic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | cis-1,2-Dichloroethylene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | Volatile Organic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | 1,2,4-Trichlorobenzene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2022 | Volatile Organic Chemicals |
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.