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 | Mar 26, 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 | MR | No | Yes | — | — | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | — | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | — | — | Resolved | Jun 30, 2025 | — | |
| Jul 1, 2020 | — | Other | No | No | — | — | — | Resolved | Aug 3, 2020 | — | |
| Jul 1, 2020 | — | Other | No | No | — | — | — | Resolved | Aug 3, 2020 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 7 MFL | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 7 MFL | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | — | 7 MFL | — | Resolved | Dec 31, 2022 | — | |
| Jul 1, 2014 | — | Other | No | No | — | — | — | Resolved | Aug 8, 2014 | — | |
| Jul 1, 2014 | — | Other | No | No | — | — | — | Resolved | Aug 8, 2014 | — | |
| Jan 1, 2014 | — | MR | No | No | — | TT | — | Resolved | Mar 26, 2014 | — | |
| Jan 1, 2014 | — | MR | No | No | — | TT | — | Resolved | Mar 26, 2014 | — | |
| Jan 1, 2012 | Jan 31, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jan 31, 2012 | — | |
| Jan 1, 2012 | Dec 31, 2012 | MR | No | Yes | — | — | — | Resolved | Nov 20, 2012 | — | |
| Jan 1, 2012 | Dec 31, 2012 | MR | No | Yes | — | — | — | Resolved | Nov 20, 2012 | — | |
| Jan 1, 2012 | Dec 31, 2012 | MR | No | Yes | — | — | — | Resolved | Nov 20, 2012 | — | |
| Jan 1, 2012 | Jan 31, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jan 31, 2012 | — | |
| Jan 1, 2012 | Jan 31, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jan 31, 2012 | — | |
| Jan 1, 2012 | Jan 31, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jan 31, 2012 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 7 MFL | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 7 MFL | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 7 MFL | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2009 | — | |
| Sep 1, 2008 | Sep 30, 2008 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2008 | — | |
| Sep 1, 2008 | Sep 30, 2008 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2008 | — | |
| Sep 1, 2008 | Sep 30, 2008 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2008 | — | |
| Sep 1, 2008 | Sep 30, 2008 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2008 | — | |
| Sep 1, 2008 | Sep 30, 2008 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2008 | — | |
| Aug 1, 2008 | Aug 31, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2008 | — | |
| Aug 1, 2008 | Aug 31, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2008 | — | |
| Aug 1, 2008 | Aug 31, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2008 | — | |
| Aug 1, 2008 | Aug 31, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2008 | — | |
| Jul 1, 2008 | Jul 31, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2008 | — | |
| Jul 1, 2008 | Jul 31, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2008 | — | |
| Jul 1, 2008 | Jul 31, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2008 | — | |
| Jul 1, 2008 | Jul 31, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2008 | — | |
| Jul 1, 2008 | Jul 31, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2008 | — | |
| Jan 1, 2008 | Dec 31, 2016 | MR | No | Yes | — | 5 pCi/L | — | Archived | Dec 31, 2016 | — | |
| Jan 1, 2008 | Dec 31, 2016 | MR | No | Yes | — | 15 pCi/L | — | Archived | Dec 31, 2016 | — |
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.