CIRCLE TOWN OF
Montana — Community Water System — PWSID: MT0000176
System Information
| PWSID | MT0000176 |
| System Name | CIRCLE TOWN OF |
| 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 | Feb 13, 1979 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Montana |
| City | CIRCLE |
| ZIP Code | 59215 |
| Address | PO BOX 140 |
| Organization | SHENNUM, BRYAN |
| Phone | 406-485-2524 |
Population & Service
| Population Served | 644 |
| Service Connections | 358 |
Drinking Water Violations (62)
This water system has 62 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2024 | — | MR | No | No | — | TT | — | Resolved | Aug 25, 2025 | — | |
| Oct 1, 2024 | — | MR | No | No | — | TT | — | Resolved | Aug 25, 2025 | — | |
| Oct 1, 2024 | — | MR | No | No | — | TT | — | Resolved | Aug 25, 2025 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2025 | — | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2025 | — | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2025 | — | |
| Mar 1, 2020 | Mar 31, 2020 | MON | No | Yes | — | — | — | Resolved | Mar 31, 2020 | — | |
| Mar 1, 2020 | Mar 31, 2020 | MON | No | Yes | — | — | — | Resolved | Mar 31, 2020 | — | |
| Mar 1, 2020 | Mar 31, 2020 | MON | No | Yes | — | — | — | Resolved | Mar 31, 2020 | — | |
| Jul 1, 2017 | — | Other | No | No | — | — | — | Resolved | Jul 25, 2017 | — | |
| Jul 1, 2017 | — | Other | No | No | — | — | — | Resolved | Jul 25, 2017 | — | |
| Dec 30, 2015 | — | MR | No | No | — | TT | — | Resolved | Feb 1, 2016 | — | |
| Dec 30, 2015 | — | MR | No | No | — | TT | — | Resolved | Feb 1, 2016 | — | |
| Oct 1, 2015 | Dec 31, 2015 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2015 | — | |
| Oct 1, 2015 | Dec 31, 2015 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2015 | — | |
| Oct 1, 2015 | Dec 31, 2015 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2015 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2014 | — | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2014 | — | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2014 | — | |
| Jul 1, 2014 | — | Other | No | No | — | — | — | Resolved | Jul 24, 2014 | — | |
| Jul 1, 2014 | — | Other | No | No | — | — | — | Resolved | Jul 24, 2014 | — | |
| Apr 1, 2014 | Jun 30, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2014 | — | |
| Apr 1, 2014 | Jun 30, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2014 | — | |
| Apr 1, 2014 | Jun 30, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2014 | — | |
| Apr 1, 2014 | Jun 30, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2014 | — | |
| Apr 1, 2014 | Jun 30, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2014 | — | |
| Apr 1, 2014 | Jun 30, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2014 | — | |
| Apr 1, 2014 | Jun 30, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2014 | — | |
| Apr 1, 2014 | Jun 30, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2014 | — | |
| Apr 1, 2014 | Jun 30, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2014 | — | |
| Jan 1, 2008 | Jan 31, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2008 | — | |
| Jan 1, 2008 | Jan 31, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2008 | — |
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.