MOUNTAINSIDE KOA
Montana — Transient Non-Community — PWSID: MT0001321
System Information
| PWSID | MT0001321 |
| System Name | MOUNTAINSIDE KOA |
| System Type | Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 5, 1980 |
| Last Reported | Jan 5, 2026 |
Location & Contact
| State | Montana |
| City | WEST YELLOWSTONE |
| ZIP Code | 59758 |
| Address | 1545 TARGEE PASS HWY |
| Organization | STOTT, FRED |
| Phone | 408-310-8556 |
Population & Service
| Population Served | 102 |
| Service Connections | 100 |
Drinking Water Violations (69)
This water system has 69 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2023 | — | Revised Total Coliform Rule | RPT | No | No | — | — | — | Resolved | May 16, 2023 | Revised Total Coliform Rule |
| Oct 1, 2023 | — | Revised Total Coliform Rule | RPT | No | No | — | — | — | Resolved | May 16, 2023 | Revised Total Coliform Rule |
| Oct 1, 2023 | — | Revised Total Coliform Rule | RPT | No | No | — | — | — | Resolved | May 16, 2023 | Revised Total Coliform Rule |
| May 1, 2019 | May 31, 2019 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | May 31, 2019 | Revised Total Coliform Rule |
| May 1, 2019 | May 31, 2019 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | May 31, 2019 | Revised Total Coliform Rule |
| May 1, 2019 | May 31, 2019 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | May 31, 2019 | Revised Total Coliform Rule |
| May 2, 2018 | — | Revised Total Coliform Rule | TT | Yes | No | — | — | — | Resolved | Jul 12, 2018 | Revised Total Coliform Rule |
| May 2, 2018 | — | Revised Total Coliform Rule | TT | Yes | No | — | — | — | Resolved | Jul 12, 2018 | Revised Total Coliform Rule |
| May 2, 2018 | — | Revised Total Coliform Rule | TT | Yes | No | — | — | — | Resolved | Jul 12, 2018 | Revised Total Coliform Rule |
| Oct 1, 2015 | Oct 31, 2015 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2015 | Total Coliform Rule |
| Oct 1, 2015 | Oct 31, 2015 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2015 | Total Coliform Rule |
| Oct 1, 2015 | Oct 31, 2015 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2015 | Total Coliform Rule |
| May 1, 2012 | — | E. COLI | MR | No | Yes | — | — | — | Resolved | Aug 6, 2021 | Ground Water Rule |
| May 1, 2012 | — | E. COLI | MR | No | Yes | — | — | — | Resolved | Aug 6, 2021 | Ground Water Rule |
| May 1, 2012 | — | E. COLI | MR | No | Yes | — | — | — | Resolved | Aug 6, 2021 | Ground Water Rule |
| Oct 1, 2011 | Oct 31, 2011 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2011 | Total Coliform Rule |
| Oct 1, 2011 | Oct 31, 2011 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2011 | Total Coliform Rule |
| Oct 1, 2011 | Oct 31, 2011 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2011 | Total Coliform Rule |
| Oct 1, 2010 | Oct 31, 2010 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2010 | Total Coliform Rule |
| Oct 1, 2010 | Oct 31, 2010 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2010 | Total Coliform Rule |
| Oct 1, 2010 | Oct 31, 2010 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2010 | Total Coliform Rule |
| Oct 1, 2008 | Oct 31, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2008 | Total Coliform Rule |
| Oct 1, 2008 | Oct 31, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2008 | Total Coliform Rule |
| Oct 1, 2008 | Oct 31, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2008 | Total Coliform Rule |
| Oct 1, 2008 | Oct 31, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2008 | Total Coliform Rule |
| Oct 1, 2008 | Oct 31, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2008 | Total Coliform Rule |
| Sep 1, 2008 | Sep 30, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2008 | Total Coliform Rule |
| Sep 1, 2008 | Sep 30, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2008 | Total Coliform Rule |
| Sep 1, 2008 | Sep 30, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2008 | Total Coliform Rule |
| Sep 1, 2008 | Sep 30, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2008 | Total Coliform Rule |
| Sep 1, 2008 | Sep 30, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2008 | Total Coliform Rule |
| Jun 1, 2008 | Jun 30, 2008 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | Total Coliform Rule |
| Jun 1, 2008 | Jun 30, 2008 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | Total Coliform Rule |
| Jun 1, 2008 | Jun 30, 2008 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | Total Coliform Rule |
| Jun 1, 2008 | Jun 30, 2008 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | Total Coliform Rule |
| Jun 1, 2008 | Jun 30, 2008 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | Total Coliform Rule |
| Jun 1, 2008 | Jun 30, 2008 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | Total Coliform Rule |
| Apr 1, 2008 | Jun 30, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | Total Coliform Rule |
| Apr 1, 2008 | Jun 30, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | Total Coliform Rule |
| Apr 1, 2008 | Jun 30, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | Total Coliform Rule |
| Apr 1, 2008 | Jun 30, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | Total Coliform Rule |
| Apr 1, 2008 | Jun 30, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | Total Coliform Rule |
| Apr 1, 2008 | Jun 30, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | Total Coliform Rule |
| Oct 1, 2007 | Dec 31, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2007 | Total Coliform Rule |
| Oct 1, 2007 | Dec 31, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2007 | Total Coliform Rule |
| Oct 1, 2007 | Dec 31, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2007 | Total Coliform Rule |
| Oct 1, 2007 | Dec 31, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2007 | Total Coliform Rule |
| Oct 1, 2007 | Dec 31, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2007 | Total Coliform Rule |
| Oct 1, 2007 | Dec 31, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2007 | Total Coliform Rule |
| Jan 1, 2006 | Dec 31, 2006 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2006 | Nitrate 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.