MADISON ARM RESORT
Montana — Transient Non-Community — PWSID: MT0001818
System Information
| PWSID | MT0001818 |
| System Name | MADISON ARM RESORT |
| 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 | PO BOX 1410 |
| Organization | CLARKSON, SHIGEKO |
| Phone | 406-646-0807 |
Population & Service
| Population Served | 117 |
| Service Connections | 51 |
Drinking Water Violations (17)
This water system has 17 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| May 1, 2024 | May 31, 2024 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | May 31, 2024 | Revised Total Coliform Rule |
| May 1, 2024 | May 31, 2024 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | May 31, 2024 | Revised Total Coliform Rule |
| May 1, 2024 | May 31, 2024 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | May 31, 2024 | Revised Total Coliform Rule |
| Jun 1, 2021 | Jun 30, 2021 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jun 30, 2021 | Revised Total Coliform Rule |
| Jun 1, 2021 | Jun 30, 2021 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jun 30, 2021 | Revised Total Coliform Rule |
| Jun 1, 2021 | Jun 30, 2021 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jun 30, 2021 | Revised Total Coliform Rule |
| Jun 1, 2016 | Jun 30, 2016 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jun 30, 2016 | Revised Total Coliform Rule |
| Jun 1, 2016 | Jun 30, 2016 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jun 30, 2016 | Revised Total Coliform Rule |
| Jun 1, 2016 | Jun 30, 2016 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jun 30, 2016 | Revised Total Coliform Rule |
| Jun 1, 2016 | Jun 30, 2016 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jun 30, 2016 | Revised Total Coliform Rule |
| Jan 1, 2002 | Dec 31, 2002 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2002 | Nitrate Rule |
| Jan 1, 2002 | Dec 31, 2002 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2002 | Nitrate Rule |
| Jan 1, 2002 | Dec 31, 2002 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Resolved | Dec 31, 2002 | Nitrate Rule |
| Aug 1, 1995 | Aug 31, 1995 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 1995 | Total Coliform Rule |
| Aug 1, 1995 | Aug 31, 1995 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 1995 | Total Coliform Rule |
| Jun 1, 1995 | Jun 30, 1995 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 1995 | Total Coliform Rule |
| Jul 1, 1993 | Sep 30, 1993 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 1993 | Total Coliform 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.