LOWER PIONEER MOUNTAIN WATER SYSTEM
Montana - Community Water System - PWSID: MT0004462
System Information
| PWSID | MT0004462 |
| System Name | LOWER PIONEER MOUNTAIN WATER SYSTEM |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Apr 23, 2007 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Montana |
| City | BIG SKY |
| ZIP Code | 59716 |
| Address | PO BOX 161097 |
| Organization | MARSH, TANNER R |
| Phone | 406-577-4936 |
Population & Service
| Population Served | 350 |
| Service Connections | 210 |
Drinking Water Violations (168)
This water system has 168 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 1, 2020 | Sep 30, 2020 | MCL | Yes | No | - | - | - | Resolved | Sep 30, 2020 | - | |
| Sep 1, 2020 | Sep 30, 2020 | MCL | Yes | No | - | - | - | Resolved | Sep 30, 2020 | - | |
| Sep 1, 2020 | Sep 30, 2020 | MCL | Yes | No | - | - | - | Resolved | Sep 30, 2020 | - | |
| Jul 1, 2020 | - | Other | No | No | - | - | - | Resolved | Jul 27, 2020 | - | |
| Jul 1, 2020 | - | Other | No | No | - | - | - | Resolved | Jul 27, 2020 | - | |
| Feb 1, 2015 | Feb 28, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 28, 2015 | - | |
| Feb 1, 2015 | Feb 28, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 28, 2015 | - | |
| Feb 1, 2015 | Feb 28, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 28, 2015 | - | |
| Feb 1, 2015 | Feb 28, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 28, 2015 | - | |
| Dec 1, 2010 | - | MR | No | Yes | - | - | - | Resolved | May 2, 2011 | - | |
| Dec 1, 2010 | - | MR | No | Yes | - | - | - | Resolved | May 2, 2011 | - | |
| Dec 1, 2010 | - | MR | No | Yes | - | - | - | Resolved | May 2, 2011 | - | |
| Feb 1, 2010 | Feb 28, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2010 | - | |
| Feb 1, 2010 | Feb 28, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2010 | - | |
| Feb 1, 2010 | Feb 28, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2010 | - | |
| Feb 1, 2010 | Feb 28, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2010 | - | |
| Oct 1, 2009 | - | MR | No | No | - | TT | - | Resolved | Oct 12, 2011 | - | |
| Oct 1, 2009 | - | MR | No | No | - | TT | - | Resolved | Oct 12, 2011 | - | |
| Oct 1, 2009 | - | MR | No | No | - | TT | - | Resolved | Oct 12, 2011 | - | |
| Oct 1, 2009 | - | MR | No | No | - | TT | - | Resolved | Oct 12, 2011 | - | |
| Mar 1, 2009 | Mar 31, 2009 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2009 | - | |
| Jul 1, 2008 | Sep 30, 2008 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Sep 30, 2008 | - | |
| Jul 1, 2008 | Sep 30, 2008 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Sep 30, 2008 | - | |
| Jul 1, 2008 | Sep 30, 2008 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Sep 30, 2008 | - | |
| Jul 1, 2008 | Sep 30, 2008 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Sep 30, 2008 | - | |
| Jul 1, 2008 | Sep 30, 2008 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Sep 30, 2008 | - | |
| Jul 1, 2008 | Sep 30, 2008 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Sep 30, 2008 | - | |
| Jul 1, 2008 | Sep 30, 2008 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Sep 30, 2008 | - | |
| Jul 1, 2008 | Sep 30, 2008 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Sep 30, 2008 | - | |
| Jul 1, 2008 | Sep 30, 2008 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Sep 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 10 mg/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 10 mg/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Jun 30, 2008 | - |
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.