DARBY TOWN OF
Montana - Community Water System - PWSID: MT0000195
System Information
| PWSID | MT0000195 |
| System Name | DARBY 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 | DARBY |
| ZIP Code | 59829 |
| Address | PO BOX 37 |
| Organization | MCKINNEY, NANCY |
| Phone | 406-821-3753 |
Population & Service
| Population Served | 850 |
| Service Connections | 494 |
Drinking Water Violations (640)
This water system has 640 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Aug 6, 2024 | - | TT | Yes | No | - | TT | - | Resolved | Jan 8, 2026 | - | |
| Aug 6, 2024 | - | TT | Yes | No | - | TT | - | Resolved | Jan 8, 2026 | - | |
| Aug 6, 2024 | - | TT | Yes | No | - | TT | - | Resolved | Jan 8, 2026 | - | |
| May 1, 2023 | May 31, 2023 | MON | No | Yes | - | - | - | Resolved | May 22, 2023 | - | |
| May 1, 2023 | May 31, 2023 | MON | No | Yes | - | - | - | Resolved | May 22, 2023 | - | |
| May 1, 2023 | May 31, 2023 | MON | No | Yes | - | - | - | Resolved | May 22, 2023 | - | |
| Jul 1, 2021 | - | Other | No | No | - | - | - | Resolved | Jul 26, 2021 | - | |
| Jul 1, 2021 | - | Other | No | No | - | - | - | Resolved | Jul 26, 2021 | - | |
| Jul 1, 2017 | - | Other | No | No | - | - | - | Resolved | Jul 27, 2017 | - | |
| Jul 1, 2017 | - | Other | No | No | - | - | - | Resolved | Jul 27, 2017 | - | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Sep 30, 2010 | - | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Sep 30, 2010 | - | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Sep 30, 2010 | - | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Sep 30, 2010 | - | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Sep 30, 2010 | - | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Sep 30, 2010 | - | |
| Jul 1, 2006 | Dec 31, 2006 | MR | No | No | - | TT | - | Resolved | Dec 31, 2006 | - | |
| Jul 1, 2006 | Dec 31, 2006 | MR | No | No | - | TT | - | Resolved | Dec 31, 2006 | - | |
| Jan 1, 2006 | Jun 30, 2006 | MR | No | No | - | TT | - | Resolved | Jun 30, 2006 | - | |
| Jan 1, 2006 | Jun 30, 2006 | MR | No | No | - | TT | - | Resolved | Jun 30, 2006 | - | |
| Oct 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Feb 9, 2007 | - | |
| Oct 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Feb 9, 2007 | - | |
| Oct 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Feb 9, 2007 | - | |
| Oct 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Feb 9, 2007 | - | |
| Oct 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Feb 9, 2007 | - | |
| Oct 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Feb 9, 2007 | - | |
| Oct 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Feb 9, 2007 | - | |
| Oct 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Feb 9, 2007 | - | |
| Sep 1, 2005 | Sep 30, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2005 | - | |
| Sep 1, 2005 | Sep 30, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2005 | - | |
| Sep 1, 2005 | Sep 30, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2005 | - | |
| Sep 1, 2005 | Sep 30, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2005 | - | |
| Sep 1, 2005 | Sep 30, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2005 | - | |
| Sep 1, 2005 | Sep 30, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2005 | - | |
| Sep 1, 2005 | Sep 30, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2005 | - | |
| Sep 1, 2005 | Sep 30, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2005 | - | |
| Sep 1, 2005 | Sep 30, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2005 | - | |
| Sep 1, 2005 | Sep 30, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2005 | - | |
| Sep 1, 2005 | Sep 30, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2005 | - | |
| Sep 1, 2005 | Sep 30, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2005 | - | |
| Sep 1, 2005 | Sep 30, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2005 | - | |
| Sep 1, 2005 | Sep 30, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2005 | - | |
| Sep 1, 2005 | Sep 30, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2005 | - | |
| Aug 1, 2005 | Aug 31, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2005 | - | |
| Aug 1, 2005 | Aug 31, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2005 | - | |
| Aug 1, 2005 | Aug 31, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2005 | - | |
| Aug 1, 2005 | Aug 31, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2005 | - | |
| Aug 1, 2005 | Aug 31, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2005 | - | |
| Aug 1, 2005 | Aug 31, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2005 | - | |
| Jan 1, 2005 | Jun 30, 2005 | MR | No | No | - | TT | - | Resolved | Jun 30, 2005 | - |
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.