WEST DECKER COAL MINE
Montana - Non-Transient Non-Community - PWSID: MT0003951
System Information
| PWSID | MT0003951 |
| System Name | WEST DECKER COAL MINE |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Non-Inventory |
| Owner Type | Private |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 27, 1998 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Montana |
| City | DECKER |
| ZIP Code | 59025 |
| Address | PO BOX 12 |
| Organization | WOLFF, LEONARD |
| Phone | 406-757-2601 |
Population & Service
| Population Served | - |
| Service Connections | 2 |
Drinking Water Violations (31)
This water system has 31 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 16, 2018 | - | MR | No | Yes | - | - | - | Resolved | Nov 6, 2018 | - | |
| Oct 16, 2018 | - | MR | No | Yes | - | - | - | Resolved | Nov 6, 2018 | - | |
| Oct 16, 2018 | - | MR | No | Yes | - | - | - | Resolved | Nov 6, 2018 | - | |
| Oct 16, 2018 | - | MR | No | Yes | - | - | - | Resolved | Nov 6, 2018 | - | |
| Jan 1, 2010 | - | MR | No | No | - | TT | - | Resolved | Feb 14, 2011 | - | |
| Jan 1, 2010 | - | MR | No | No | - | TT | - | Resolved | Feb 14, 2011 | - | |
| Jul 1, 2009 | Sep 30, 2009 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2009 | - | |
| Jul 1, 2009 | Sep 30, 2009 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2009 | - | |
| Jul 1, 2009 | Sep 30, 2009 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2009 | - | |
| Jul 1, 2009 | Sep 30, 2009 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2009 | - | |
| Apr 1, 2007 | Jun 30, 2007 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jun 30, 2007 | - | |
| Apr 1, 2007 | Jun 30, 2007 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jun 30, 2007 | - | |
| Apr 1, 2007 | Jun 30, 2007 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jun 30, 2007 | - | |
| Jan 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Jun 6, 2006 | - | |
| Jan 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Jun 6, 2006 | - | |
| Jan 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Jun 6, 2006 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2002 | Oct 31, 2002 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2002 | - | |
| Oct 1, 2002 | Oct 31, 2002 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2002 | - | |
| Oct 1, 2002 | Oct 31, 2002 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2002 | - | |
| Jul 1, 2000 | Sep 30, 2000 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2000 | - | |
| Jul 1, 2000 | Sep 30, 2000 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2000 | - | |
| Jul 1, 2000 | Sep 30, 2000 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2000 | - | |
| Jul 1, 2000 | Sep 30, 2000 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2000 | - | |
| Jul 1, 2000 | Sep 30, 2000 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2000 | - | |
| Jul 1, 2000 | Sep 30, 2000 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2000 | - |
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.