BIG SANDY TOWN OF
Montana - Community Water System - PWSID: MT0000150
System Information
| PWSID | MT0000150 |
| System Name | BIG SANDY 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 | BIG SANDY |
| ZIP Code | 59520 |
| Address | PO BOX 381 |
| Organization | KLEINSASSER, WENDY |
| Phone | 406-378-2350 |
Population & Service
| Population Served | 608 |
| Service Connections | 372 |
Drinking Water Violations (58)
This water system has 58 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, 2024 | - | Other | No | No | - | - | - | Resolved | Jul 31, 2024 | - | |
| Jul 1, 2024 | - | Other | No | No | - | - | - | Resolved | Jul 31, 2024 | - | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2024 | - | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2024 | - | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2024 | - | |
| Sep 1, 2017 | Aug 31, 2018 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Aug 31, 2018 | - | |
| Sep 1, 2017 | Aug 31, 2018 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Aug 31, 2018 | - | |
| Sep 1, 2017 | Aug 31, 2018 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Aug 31, 2018 | - | |
| Sep 1, 2017 | Aug 31, 2018 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Aug 31, 2018 | - | |
| Sep 1, 2017 | Aug 31, 2018 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Aug 31, 2018 | - | |
| Sep 1, 2017 | Aug 31, 2018 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Aug 31, 2018 | - | |
| 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 | - | |
| Sep 1, 2014 | Aug 31, 2015 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Aug 31, 2015 | - | |
| Sep 1, 2014 | Aug 31, 2015 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Aug 31, 2015 | - | |
| Sep 1, 2014 | Aug 31, 2015 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Aug 31, 2015 | - | |
| Sep 1, 2014 | Aug 31, 2015 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Aug 31, 2015 | - | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2014 | - | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2014 | - | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2014 | - | |
| Sep 1, 2011 | Sep 30, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2011 | - | |
| Sep 1, 2011 | Sep 30, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2011 | - | |
| Sep 1, 2011 | Sep 30, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2011 | - | |
| Apr 1, 2010 | Apr 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 2010 | - | |
| Apr 1, 2010 | Apr 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 2010 | - | |
| Apr 1, 2010 | Apr 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 2010 | - | |
| Apr 1, 2010 | Apr 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 2010 | - | |
| Jan 1, 2008 | Dec 31, 2008 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2008 | - | |
| Jan 1, 2008 | Dec 31, 2008 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2008 | - | |
| Jan 1, 2008 | Dec 31, 2008 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2008 | - | |
| Jul 1, 2006 | - | Other | No | No | - | - | - | Resolved | Feb 21, 2007 | - | |
| Jul 1, 2006 | - | Other | No | No | - | - | - | Resolved | Feb 21, 2007 | - | |
| Oct 1, 2004 | Oct 31, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2004 | - | |
| Oct 1, 2004 | Oct 31, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2004 | - | |
| Oct 1, 2004 | Oct 31, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2004 | - | |
| Oct 1, 2000 | Oct 31, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2000 | - | |
| Oct 1, 2000 | Oct 31, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2000 | - | |
| Oct 1, 2000 | Oct 31, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2000 | - | |
| Jul 1, 2000 | Jul 31, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2000 | - | |
| Jul 1, 2000 | Jul 31, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2000 | - | |
| Jul 1, 2000 | Jul 31, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2000 | - | |
| Jul 1, 2000 | Jul 31, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2000 | - | |
| Nov 1, 1998 | Nov 30, 1998 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 1998 | - | |
| Oct 1, 1998 | Oct 31, 1998 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 1998 | - | |
| Aug 1, 1998 | Aug 31, 1998 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 1998 | - | |
| Jul 1, 1998 | Jul 31, 1998 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 1998 | - | |
| Jun 1, 1998 | Jun 30, 1998 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 1998 | - | |
| May 1, 1998 | May 31, 1998 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 1998 | - | |
| May 1, 1998 | May 31, 1998 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 1998 | - |
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.