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 | Mar 26, 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 (70)
This water system has 70 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 | — | RPT | No | No | — | — | — | Resolved | May 16, 2023 | — | |
| Oct 1, 2023 | — | RPT | No | No | — | — | — | Resolved | May 16, 2023 | — | |
| Oct 1, 2023 | — | RPT | No | No | — | — | — | Resolved | May 16, 2023 | — | |
| May 1, 2019 | May 31, 2019 | MON | No | Yes | — | — | — | Resolved | May 31, 2019 | — | |
| May 1, 2019 | May 31, 2019 | MON | No | Yes | — | — | — | Resolved | May 31, 2019 | — | |
| May 1, 2019 | May 31, 2019 | MON | No | Yes | — | — | — | Resolved | May 31, 2019 | — | |
| May 2, 2018 | — | TT | Yes | No | — | — | — | Resolved | Jul 12, 2018 | — | |
| May 2, 2018 | — | TT | Yes | No | — | — | — | Resolved | Jul 12, 2018 | — | |
| May 2, 2018 | — | TT | Yes | No | — | — | — | Resolved | Jul 12, 2018 | — | |
| Oct 1, 2015 | Oct 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2015 | — | |
| Oct 1, 2015 | Oct 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2015 | — | |
| Oct 1, 2015 | Oct 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2015 | — | |
| May 1, 2012 | — | MR | No | Yes | — | — | — | Resolved | Aug 6, 2021 | — | |
| May 1, 2012 | — | MR | No | Yes | — | — | — | Resolved | Aug 6, 2021 | — | |
| May 1, 2012 | — | MR | No | Yes | — | — | — | Resolved | Aug 6, 2021 | — | |
| Oct 1, 2011 | Oct 31, 2011 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2011 | — | |
| Oct 1, 2011 | Oct 31, 2011 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2011 | — | |
| Oct 1, 2011 | Oct 31, 2011 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2011 | — | |
| Oct 1, 2010 | Oct 31, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2010 | — | |
| Oct 1, 2010 | Oct 31, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2010 | — | |
| Oct 1, 2010 | Oct 31, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2010 | — | |
| Oct 1, 2008 | Oct 31, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2008 | — | |
| Oct 1, 2008 | Oct 31, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2008 | — | |
| Oct 1, 2008 | Oct 31, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2008 | — | |
| Oct 1, 2008 | Oct 31, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2008 | — | |
| Oct 1, 2008 | Oct 31, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2008 | — | |
| Sep 1, 2008 | Sep 30, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2008 | — | |
| Sep 1, 2008 | Sep 30, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2008 | — | |
| Sep 1, 2008 | Sep 30, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2008 | — | |
| Sep 1, 2008 | Sep 30, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2008 | — | |
| Sep 1, 2008 | Sep 30, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2008 | — | |
| Jun 1, 2008 | Jun 30, 2008 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | — | |
| Jun 1, 2008 | Jun 30, 2008 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | — | |
| Jun 1, 2008 | Jun 30, 2008 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | — | |
| Jun 1, 2008 | Jun 30, 2008 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | — | |
| Jun 1, 2008 | Jun 30, 2008 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | — | |
| Jun 1, 2008 | Jun 30, 2008 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | — | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2008 | — | |
| Oct 1, 2007 | Dec 31, 2007 | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2007 | — | |
| Oct 1, 2007 | Dec 31, 2007 | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2007 | — | |
| Oct 1, 2007 | Dec 31, 2007 | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2007 | — | |
| Oct 1, 2007 | Dec 31, 2007 | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2007 | — | |
| Oct 1, 2007 | Dec 31, 2007 | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2007 | — | |
| Oct 1, 2007 | Dec 31, 2007 | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2007 | — | |
| Jan 1, 2006 | Dec 31, 2006 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2006 | — |
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.