BIG SKY COUNTY WATER AND SEWER DIST 363
Montana — Community Water System — PWSID: MT0002385
System Information
| PWSID | MT0002385 |
| System Name | BIG SKY COUNTY WATER AND SEWER DIST 363 |
| 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 | Jan 28, 1982 |
| Last Reported | Jan 5, 2026 |
Location & Contact
| State | Montana |
| City | BIG SKY |
| ZIP Code | 59716-0670 |
| Address | PO BOX 160670 |
| Organization | SAND, AMY |
| Phone | 406-995-2660 |
Population & Service
| Population Served | 4,132 |
| Service Connections | 2,599 |
Drinking Water Violations (97)
This water system has 97 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Apr 1, 2025 | Jun 30, 2025 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Jun 30, 2025 | Nitrate Rule |
| Apr 1, 2025 | Jun 30, 2025 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Jun 30, 2025 | Nitrate Rule |
| Apr 1, 2025 | Jun 30, 2025 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Jun 30, 2025 | Nitrate Rule |
| Jul 1, 2020 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Aug 3, 2020 | Consumer Confidence Rule |
| Jul 1, 2020 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Aug 3, 2020 | Consumer Confidence Rule |
| Jan 1, 2020 | Dec 31, 2022 | Asbestos | MR | No | Yes | — | 7 MFL | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | Asbestos | MR | No | Yes | — | 7 MFL | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2020 | Dec 31, 2022 | Asbestos | MR | No | Yes | — | 7 MFL | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jul 1, 2014 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Aug 8, 2014 | Consumer Confidence Rule |
| Jul 1, 2014 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Aug 8, 2014 | Consumer Confidence Rule |
| Jan 1, 2014 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Mar 26, 2014 | Lead and Copper Rule |
| Jan 1, 2014 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Mar 26, 2014 | Lead and Copper Rule |
| Jan 1, 2012 | Dec 31, 2012 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Nov 20, 2012 | Nitrate Rule |
| Jan 1, 2012 | Dec 31, 2012 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Nov 20, 2012 | Nitrate Rule |
| Jan 1, 2012 | Dec 31, 2012 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Nov 20, 2012 | Nitrate Rule |
| Jan 1, 2012 | Jan 31, 2012 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jan 31, 2012 | Total Coliform Rule |
| Jan 1, 2012 | Jan 31, 2012 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jan 31, 2012 | Total Coliform Rule |
| Jan 1, 2012 | Jan 31, 2012 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jan 31, 2012 | Total Coliform Rule |
| Jan 1, 2012 | Jan 31, 2012 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jan 31, 2012 | Total Coliform Rule |
| Jan 1, 2011 | Dec 31, 2013 | Asbestos | MR | No | Yes | — | 7 MFL | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Asbestos | MR | No | Yes | — | 7 MFL | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Asbestos | MR | No | Yes | — | 7 MFL | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2009 | Dec 31, 2009 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | Nitrate Rule |
| Jan 1, 2009 | Dec 31, 2009 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | Nitrate Rule |
| Jan 1, 2009 | Dec 31, 2009 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | Nitrate Rule |
| Jan 1, 2009 | Dec 31, 2009 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | Nitrate Rule |
| Jan 1, 2009 | Dec 31, 2009 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | Nitrate Rule |
| Jan 1, 2009 | Dec 31, 2009 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | Nitrate Rule |
| Jan 1, 2009 | Dec 31, 2009 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | Nitrate Rule |
| Jan 1, 2009 | Dec 31, 2009 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | Nitrate Rule |
| Jan 1, 2009 | Dec 31, 2009 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | Nitrate Rule |
| Jan 1, 2009 | Dec 31, 2009 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | Nitrate Rule |
| Jan 1, 2009 | Dec 31, 2009 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | Nitrate Rule |
| Jan 1, 2009 | Dec 31, 2009 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | Nitrate Rule |
| Sep 1, 2008 | Sep 30, 2008 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2008 | Total Coliform Rule |
| Sep 1, 2008 | Sep 30, 2008 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2008 | Total Coliform Rule |
| Sep 1, 2008 | Sep 30, 2008 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2008 | Total Coliform Rule |
| Sep 1, 2008 | Sep 30, 2008 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2008 | Total Coliform Rule |
| Sep 1, 2008 | Sep 30, 2008 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2008 | Total Coliform Rule |
| Aug 1, 2008 | Aug 31, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2008 | Total Coliform Rule |
| Aug 1, 2008 | Aug 31, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2008 | Total Coliform Rule |
| Aug 1, 2008 | Aug 31, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2008 | Total Coliform Rule |
| Aug 1, 2008 | Aug 31, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2008 | Total Coliform Rule |
| Jul 1, 2008 | Jul 31, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2008 | Total Coliform Rule |
| Jul 1, 2008 | Jul 31, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2008 | Total Coliform Rule |
| Jul 1, 2008 | Jul 31, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2008 | Total Coliform Rule |
| Jul 1, 2008 | Jul 31, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2008 | Total Coliform Rule |
| Jul 1, 2008 | Jul 31, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2008 | Total Coliform Rule |
| Jan 1, 2008 | Dec 31, 2016 | Gross Alpha, Excl. Radon and U | MR | No | Yes | — | 15 pCi/L | — | Archived | Dec 31, 2016 | Radionuclides and Revised Rad Rule |
| Jan 1, 2008 | Dec 31, 2016 | Combined Radium (-226 and -228) | MR | No | Yes | — | 5 pCi/L | — | Archived | Dec 31, 2016 | Radionuclides and Revised Rad 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.