YELLOWTAIL DAM GC SYSTEM
Montana - Community Water System - PWSID: MT0002514
System Information
| PWSID | MT0002514 |
| System Name | YELLOWTAIL DAM GC SYSTEM |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Federal |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 28, 1982 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Montana |
| City | YELLOWTAIL |
| ZIP Code | 59035 |
| Address | PO BOX 7551 |
| Organization | CURTIS, CHRIS |
| Phone | 406-666-3201 |
Population & Service
| Population Served | 125 |
| Service Connections | 50 |
Drinking Water Violations (226)
This water system has 226 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec 30, 2024 | - | MR | No | No | - | TT | - | Resolved | Feb 12, 2025 | - | |
| Dec 30, 2024 | - | MR | No | No | - | TT | - | Resolved | Feb 12, 2025 | - | |
| Jul 1, 2023 | - | Other | No | No | - | - | - | Resolved | Jul 10, 2023 | - | |
| Jul 1, 2023 | - | Other | No | No | - | - | - | Resolved | Jul 10, 2023 | - | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2017 | - | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2017 | - | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2017 | - | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2017 | - | |
| Dec 30, 2015 | - | MR | No | No | - | TT | - | Resolved | Feb 1, 2016 | - | |
| Dec 30, 2015 | - | MR | No | No | - | TT | - | Resolved | Feb 1, 2016 | - | |
| Jan 1, 2013 | Dec 31, 2013 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2013 | - | |
| Jan 1, 2013 | Dec 31, 2013 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2013 | - | |
| Jan 1, 2013 | Dec 31, 2013 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2013 | - | |
| Jan 1, 2013 | Dec 31, 2013 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2013 | - | |
| Oct 1, 2012 | - | Other | No | No | - | - | - | Resolved | Feb 4, 2014 | - | |
| Oct 1, 2012 | - | Other | No | No | - | - | - | Resolved | Feb 4, 2014 | - | |
| Jul 1, 2012 | - | Other | No | No | - | - | - | Resolved | Feb 4, 2014 | - | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | - | 7 MFL | - | Archived | Dec 31, 2013 | - | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | - | 7 MFL | - | Archived | Dec 31, 2013 | - | |
| Jan 1, 2010 | - | MR | No | No | - | TT | - | Resolved | Feb 16, 2016 | - | |
| Jan 1, 2010 | - | MR | No | No | - | TT | - | Resolved | Feb 16, 2016 | - | |
| Jul 1, 2007 | - | Other | No | No | - | - | - | Resolved | Jul 31, 2008 | - | |
| Jul 1, 2007 | - | Other | No | No | - | - | - | Resolved | Jul 31, 2008 | - | |
| Jul 1, 2007 | - | Other | No | No | - | - | - | Resolved | Jul 31, 2008 | - | |
| Jan 1, 2006 | Dec 31, 2006 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2006 | - | |
| Jan 1, 2006 | Dec 31, 2006 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2006 | - | |
| Jan 1, 2006 | Dec 31, 2006 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2006 | - | |
| Oct 1, 2005 | Oct 31, 2005 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2005 | - | |
| Oct 1, 2005 | Oct 31, 2005 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2005 | - | |
| Oct 1, 2005 | Oct 31, 2005 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2005 | - | |
| Jul 1, 2002 | - | Other | No | No | - | - | - | Resolved | Oct 2, 2003 | - | |
| Jul 1, 2002 | - | Other | No | No | - | - | - | Resolved | Oct 2, 2003 | - | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | - | 0.05 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | - | 0.05 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | - | 0.006 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | - | 0.006 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | - | 0.4 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | - | 0.4 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | - | 0.4 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | - | 0.001 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | - | 0.001 mg/L | - | Resolved | Dec 31, 2004 | - |
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.