THREE FORKS KOA
Montana - Transient Non-Community - PWSID: MT0000759
System Information
| PWSID | MT0000759 |
| System Name | THREE FORKS 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 | THREE FORKS |
| ZIP Code | 59752 |
| Address | 15 KOA ROAD |
| Organization | BROOKE, PETER |
| Phone | 406-285-3611 |
Population & Service
| Population Served | 202 |
| Service Connections | 71 |
Drinking Water Violations (113)
This water system has 113 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 9, 2025 | - | TT | Yes | No | - | - | - | Resolved | Oct 16, 2025 | - | |
| Sep 9, 2025 | - | TT | Yes | No | - | - | - | Resolved | Oct 16, 2025 | - | |
| Sep 9, 2025 | - | TT | Yes | No | - | - | - | Resolved | Oct 16, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | - | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | - | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2023 | Dec 31, 2023 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2023 | - | |
| Jan 1, 2023 | Dec 31, 2023 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2023 | - | |
| Jan 1, 2023 | Dec 31, 2023 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2023 | - | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2021 | - | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2021 | - | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2021 | - | |
| 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 16, 2018 | - | TT | Yes | No | - | - | - | Resolved | Sep 14, 2018 | - | |
| May 16, 2018 | - | TT | Yes | No | - | - | - | Resolved | Sep 14, 2018 | - | |
| May 16, 2018 | - | TT | Yes | No | - | - | - | Resolved | Sep 14, 2018 | - | |
| May 16, 2016 | - | TT | Yes | No | - | - | - | Resolved | Aug 30, 2016 | - | |
| May 16, 2016 | - | TT | Yes | No | - | - | - | Resolved | Aug 30, 2016 | - | |
| May 16, 2016 | - | TT | Yes | No | - | - | - | Resolved | Aug 30, 2016 | - | |
| Jun 10, 2014 | - | MR | No | Yes | - | - | - | Resolved | Jun 9, 2014 | - | |
| Jun 10, 2014 | - | MR | No | Yes | - | - | - | Resolved | Jun 9, 2014 | - | |
| Jun 10, 2014 | - | MR | No | Yes | - | - | - | Resolved | Jun 9, 2014 | - | |
| Jun 1, 2014 | Jun 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2014 | - | |
| Jun 1, 2014 | Jun 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2014 | - | |
| Jun 1, 2014 | Jun 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2014 | - | |
| Jun 1, 2014 | Jun 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2014 | - | |
| May 1, 2014 | May 31, 2014 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 2014 | - | |
| May 1, 2014 | May 31, 2014 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 2014 | - | |
| May 1, 2014 | May 31, 2014 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 2014 | - | |
| 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 | - | |
| Aug 1, 2011 | Aug 31, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2011 | - | |
| Aug 1, 2011 | Aug 31, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2011 | - | |
| Aug 1, 2011 | Aug 31, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2011 | - | |
| Jun 1, 2011 | Jun 30, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2011 | - | |
| Jun 1, 2011 | Jun 30, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2011 | - | |
| Jun 1, 2011 | Jun 30, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2011 | - | |
| Apr 1, 2011 | Apr 30, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 2011 | - | |
| Apr 1, 2011 | Apr 30, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 2011 | - | |
| Apr 1, 2011 | Apr 30, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 2011 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2010 | - | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2010 | - | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2010 | - | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2010 | - | |
| Jul 1, 2009 | Sep 30, 2009 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2009 | - | |
| Jul 1, 2009 | Sep 30, 2009 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2009 | - |
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.