CHESTER TOWN OF
Montana — Community Water System — PWSID: MT0000173
System Information
| PWSID | MT0000173 |
| System Name | CHESTER TOWN OF |
| System Type | Community Water System |
| Water Source | Surface 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 | CHESTER |
| ZIP Code | 59522 |
| Address | PO BOX 644 |
| Organization | WICKUM, ASHLEY |
| Phone | 406-759-5635 |
Population & Service
| Population Served | 870 |
| Service Connections | 495 |
Drinking Water Violations (25)
This water system has 25 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, 2025 | — | MR | No | No | — | TT | — | Unaddressed | — | — | |
| Oct 1, 2025 | — | MR | No | No | — | TT | — | Unaddressed | — | — | |
| Jan 1, 2017 | Dec 31, 2022 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2017 | Dec 31, 2022 | MR | No | Yes | — | 5 pCi/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2017 | Dec 31, 2022 | MR | No | Yes | — | 5 pCi/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2017 | Dec 31, 2022 | MR | No | Yes | — | 5 pCi/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2017 | Dec 31, 2022 | MR | No | Yes | — | 5 pCi/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2017 | Dec 31, 2022 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2017 | Dec 31, 2022 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2017 | Dec 31, 2022 | MR | No | Yes | — | 15 pCi/L | — | Resolved | Dec 31, 2022 | — | |
| Jul 1, 2015 | Sep 30, 2015 | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 2015 | — | |
| Jul 1, 2015 | Sep 30, 2015 | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 2015 | — | |
| Jul 1, 2015 | Sep 30, 2015 | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 2015 | — | |
| Jul 1, 2015 | Sep 30, 2015 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 2015 | — | |
| Jul 1, 2015 | Sep 30, 2015 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 2015 | — | |
| Jul 1, 2015 | Sep 30, 2015 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 2015 | — | |
| Jul 1, 2010 | — | Other | No | No | — | — | — | Resolved | Jul 27, 2010 | — | |
| Jul 1, 2010 | — | Other | No | No | — | — | — | Resolved | Jul 27, 2010 | — | |
| Jul 1, 2010 | — | Other | No | No | — | — | — | Resolved | Jul 27, 2010 | — | |
| Jul 1, 2003 | Jul 31, 2003 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2003 | — | |
| Jul 1, 2003 | Jul 31, 2003 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2003 | — | |
| Jul 1, 2003 | Jul 31, 2003 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2003 | — | |
| Jul 1, 2003 | Jul 31, 2003 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2003 | — | |
| Dec 1, 1993 | Dec 31, 1993 | TT | Yes | No | — | — | — | Resolved | Dec 31, 1993 | — | |
| — | — | — | No | No | — | — | — | — | — | — |
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.