SHELBY ADDITION WATER DISTRICT
Montana — Community Water System — PWSID: MT0002800
System Information
| PWSID | MT0002800 |
| System Name | SHELBY ADDITION WATER DISTRICT |
| 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 | Dec 30, 1983 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Montana |
| City | MISSOULA |
| ZIP Code | 59806 |
| Address | PO BOX 1750 |
| Organization | MEFFORD, ANDY |
| Phone | 406-728-1880 |
Population & Service
| Population Served | 145 |
| Service Connections | 65 |
Drinking Water Violations (93)
This water system has 93 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2018 | — | Other | No | No | — | — | — | Resolved | Jul 24, 2018 | — | |
| Jul 1, 2018 | — | Other | No | No | — | — | — | Resolved | Jul 24, 2018 | — | |
| Aug 1, 2014 | Aug 31, 2014 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2014 | — | |
| Aug 1, 2014 | Aug 31, 2014 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2014 | — | |
| Aug 1, 2014 | Aug 31, 2014 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2014 | — | |
| Aug 1, 2014 | Aug 31, 2014 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2014 | — | |
| Sep 1, 2012 | — | MR | No | Yes | — | — | — | Resolved | Oct 25, 2012 | — | |
| Sep 1, 2012 | — | MR | No | Yes | — | — | — | Resolved | Oct 25, 2012 | — | |
| Sep 1, 2012 | — | MR | No | Yes | — | — | — | Resolved | Oct 25, 2012 | — | |
| Sep 1, 2012 | — | MR | No | Yes | — | — | — | Resolved | Oct 25, 2012 | — | |
| Sep 1, 2012 | — | MR | No | Yes | — | — | — | Resolved | Oct 25, 2012 | — | |
| Sep 1, 2012 | — | MR | No | Yes | — | — | — | Resolved | Oct 25, 2012 | — | |
| Sep 1, 2012 | Sep 30, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2012 | — | |
| Sep 1, 2012 | Sep 30, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2012 | — | |
| Sep 1, 2012 | Sep 30, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2012 | — | |
| Sep 1, 2012 | Sep 30, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2012 | — | |
| Sep 1, 2012 | Sep 30, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2012 | — | |
| Oct 1, 2008 | Oct 31, 2008 | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2008 | — | |
| Oct 1, 2008 | Oct 31, 2008 | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2008 | — | |
| Oct 1, 2008 | Oct 31, 2008 | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2008 | — | |
| Oct 1, 2008 | Oct 31, 2008 | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2008 | — | |
| Oct 1, 2008 | Oct 31, 2008 | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2008 | — | |
| 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 | — | |
| May 1, 2007 | May 31, 2007 | MCL | Yes | No | — | 5% of samples | — | Resolved | May 31, 2007 | — | |
| May 1, 2007 | May 31, 2007 | MCL | Yes | No | — | 5% of samples | — | Resolved | May 31, 2007 | — | |
| May 1, 2007 | May 31, 2007 | MCL | Yes | No | — | 5% of samples | — | Resolved | May 31, 2007 | — | |
| May 1, 2007 | May 31, 2007 | MCL | Yes | No | — | 5% of samples | — | Resolved | May 31, 2007 | — | |
| May 1, 2007 | May 31, 2007 | MCL | Yes | No | — | 5% of samples | — | Resolved | May 31, 2007 | — | |
| Jul 1, 2006 | Jul 31, 2006 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2006 | — | |
| Jul 1, 2006 | Jul 31, 2006 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2006 | — | |
| Jul 1, 2006 | Jul 31, 2006 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2006 | — | |
| Jul 1, 2006 | Jul 31, 2006 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2006 | — | |
| Jul 1, 2006 | Jul 31, 2006 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2006 | — | |
| Dec 1, 2005 | Dec 31, 2005 | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2005 | — | |
| Dec 1, 2005 | Dec 31, 2005 | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2005 | — | |
| Dec 1, 2005 | Dec 31, 2005 | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2005 | — | |
| Dec 1, 2005 | Dec 31, 2005 | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2005 | — | |
| Dec 1, 2005 | Dec 31, 2005 | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2005 | — | |
| Dec 1, 2005 | Dec 31, 2005 | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2005 | — | |
| Apr 1, 2005 | Apr 30, 2005 | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 2005 | — | |
| Apr 1, 2005 | Apr 30, 2005 | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 2005 | — | |
| Apr 1, 2005 | Apr 30, 2005 | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 2005 | — | |
| Apr 1, 2005 | Apr 30, 2005 | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 2005 | — | |
| Apr 1, 2005 | Apr 30, 2005 | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 2005 | — | |
| Apr 1, 2005 | Apr 30, 2005 | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 2005 | — | |
| Oct 1, 2004 | Oct 31, 2004 | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2004 | — | |
| Oct 1, 2004 | Oct 31, 2004 | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2004 | — | |
| Oct 1, 2004 | Oct 31, 2004 | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 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.