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 | Jan 5, 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 (57)
This water system has 57 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 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 31, 2024 | Consumer Confidence Rule |
| Jul 1, 2024 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 31, 2024 | Consumer Confidence Rule |
| Jan 1, 2024 | Dec 31, 2024 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2024 | Nitrate Rule |
| Jan 1, 2024 | Dec 31, 2024 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2024 | Nitrate Rule |
| Jan 1, 2024 | Dec 31, 2024 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2024 | Nitrate Rule |
| Sep 1, 2017 | Aug 31, 2018 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Aug 31, 2018 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Sep 1, 2017 | Aug 31, 2018 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Aug 31, 2018 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Sep 1, 2017 | Aug 31, 2018 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Aug 31, 2018 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Sep 1, 2017 | Aug 31, 2018 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2018 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Sep 1, 2017 | Aug 31, 2018 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2018 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Sep 1, 2017 | Aug 31, 2018 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2018 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2017 | Dec 31, 2017 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2017 | Nitrate Rule |
| Jan 1, 2017 | Dec 31, 2017 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2017 | Nitrate Rule |
| Jan 1, 2017 | Dec 31, 2017 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2017 | Nitrate Rule |
| Sep 1, 2014 | Aug 31, 2015 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2015 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Sep 1, 2014 | Aug 31, 2015 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2015 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Sep 1, 2014 | Aug 31, 2015 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Aug 31, 2015 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Sep 1, 2014 | Aug 31, 2015 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Aug 31, 2015 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2014 | Sep 30, 2014 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2014 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2014 | Sep 30, 2014 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2014 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2014 | Sep 30, 2014 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2014 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Sep 1, 2011 | Sep 30, 2011 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2011 | Total Coliform Rule |
| Sep 1, 2011 | Sep 30, 2011 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2011 | Total Coliform Rule |
| Sep 1, 2011 | Sep 30, 2011 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2011 | Total Coliform Rule |
| Apr 1, 2010 | Apr 30, 2010 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2010 | Total Coliform Rule |
| Apr 1, 2010 | Apr 30, 2010 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2010 | Total Coliform Rule |
| Apr 1, 2010 | Apr 30, 2010 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2010 | Total Coliform Rule |
| Apr 1, 2010 | Apr 30, 2010 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2010 | Total Coliform Rule |
| Jan 1, 2008 | Dec 31, 2008 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2008 | Nitrate Rule |
| Jan 1, 2008 | Dec 31, 2008 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2008 | Nitrate Rule |
| Jan 1, 2008 | Dec 31, 2008 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2008 | Nitrate Rule |
| Jul 1, 2006 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Feb 21, 2007 | Consumer Confidence Rule |
| Jul 1, 2006 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Feb 21, 2007 | Consumer Confidence Rule |
| Oct 1, 2004 | Oct 31, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2004 | Total Coliform Rule |
| Oct 1, 2004 | Oct 31, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2004 | Total Coliform Rule |
| Oct 1, 2004 | Oct 31, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2004 | Total Coliform Rule |
| Oct 1, 2000 | Oct 31, 2000 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2000 | Total Coliform Rule |
| Oct 1, 2000 | Oct 31, 2000 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2000 | Total Coliform Rule |
| Oct 1, 2000 | Oct 31, 2000 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2000 | Total Coliform Rule |
| Jul 1, 2000 | Jul 31, 2000 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2000 | Total Coliform Rule |
| Jul 1, 2000 | Jul 31, 2000 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2000 | Total Coliform Rule |
| Jul 1, 2000 | Jul 31, 2000 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2000 | Total Coliform Rule |
| Nov 1, 1998 | Nov 30, 1998 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 1998 | Total Coliform Rule |
| Oct 1, 1998 | Oct 31, 1998 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 1998 | Total Coliform Rule |
| Aug 1, 1998 | Aug 31, 1998 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 1998 | Total Coliform Rule |
| Jul 1, 1998 | Jul 31, 1998 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 1998 | Total Coliform Rule |
| Jun 1, 1998 | Jun 30, 1998 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 1998 | Total Coliform Rule |
| May 1, 1998 | May 31, 1998 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | May 31, 1998 | Total Coliform Rule |
| May 1, 1998 | May 31, 1998 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | May 31, 1998 | Total Coliform Rule |
| Apr 1, 1998 | Apr 30, 1998 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 1998 | Total Coliform Rule |
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.