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 | Jan 5, 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 (24)
This water system has 24 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 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Unaddressed | — | Lead and Copper Rule |
| Oct 1, 2025 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Unaddressed | — | Lead and Copper Rule |
| Jan 1, 2017 | Dec 31, 2022 | Gross Alpha, Excl. Radon and U | MR | No | Yes | — | 15 pCi/L | — | Resolved | Dec 31, 2022 | Radionuclides and Revised Rad Rule |
| Jan 1, 2017 | Dec 31, 2022 | Combined Radium (-226 and -228) | MR | No | Yes | — | 5 pCi/L | — | Resolved | Dec 31, 2022 | Radionuclides and Revised Rad Rule |
| Jan 1, 2017 | Dec 31, 2022 | Combined Radium (-226 and -228) | MR | No | Yes | — | 5 pCi/L | — | Resolved | Dec 31, 2022 | Radionuclides and Revised Rad Rule |
| Jan 1, 2017 | Dec 31, 2022 | Combined Radium (-226 and -228) | MR | No | Yes | — | 5 pCi/L | — | Resolved | Dec 31, 2022 | Radionuclides and Revised Rad Rule |
| Jan 1, 2017 | Dec 31, 2022 | Combined Radium (-226 and -228) | MR | No | Yes | — | 5 pCi/L | — | Resolved | Dec 31, 2022 | Radionuclides and Revised Rad Rule |
| Jan 1, 2017 | Dec 31, 2022 | Gross Alpha, Excl. Radon and U | MR | No | Yes | — | 15 pCi/L | — | Resolved | Dec 31, 2022 | Radionuclides and Revised Rad Rule |
| Jan 1, 2017 | Dec 31, 2022 | Gross Alpha, Excl. Radon and U | MR | No | Yes | — | 15 pCi/L | — | Resolved | Dec 31, 2022 | Radionuclides and Revised Rad Rule |
| Jan 1, 2017 | Dec 31, 2022 | Gross Alpha, Excl. Radon and U | MR | No | Yes | — | 15 pCi/L | — | Resolved | Dec 31, 2022 | Radionuclides and Revised Rad Rule |
| Jul 1, 2015 | Sep 30, 2015 | DICHLOROMETHANE | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 2015 | Volatile Organic Chemicals |
| Jul 1, 2015 | Sep 30, 2015 | Xylenes, Total | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 2015 | Volatile Organic Chemicals |
| Jul 1, 2015 | Sep 30, 2015 | Xylenes, Total | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 2015 | Volatile Organic Chemicals |
| Jul 1, 2015 | Sep 30, 2015 | Xylenes, Total | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 2015 | Volatile Organic Chemicals |
| Jul 1, 2015 | Sep 30, 2015 | DICHLOROMETHANE | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 2015 | Volatile Organic Chemicals |
| Jul 1, 2015 | Sep 30, 2015 | DICHLOROMETHANE | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 2015 | Volatile Organic Chemicals |
| Jul 1, 2010 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 27, 2010 | Consumer Confidence Rule |
| Jul 1, 2010 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 27, 2010 | Consumer Confidence Rule |
| Jul 1, 2010 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 27, 2010 | Consumer Confidence Rule |
| Jul 1, 2003 | Jul 31, 2003 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2003 | Total Coliform Rule |
| Jul 1, 2003 | Jul 31, 2003 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2003 | Total Coliform Rule |
| Jul 1, 2003 | Jul 31, 2003 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2003 | Total Coliform Rule |
| Jul 1, 2003 | Jul 31, 2003 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2003 | Total Coliform Rule |
| Dec 1, 1993 | Dec 31, 1993 | Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Dec 31, 1993 | Surface Water Treatment 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.