HALF MOON LAKE LODGE
Wyoming — Transient Non-Community — PWSID: WY5600475
System Information
| PWSID | WY5600475 |
| System Name | HALF MOON LAKE LODGE |
| System Type | Transient Non-Community |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 13, 1979 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | Wyoming |
| City | PINEDALE |
| ZIP Code | 82941 |
| Address | P.O. Box 687 |
| Organization | OLSON, CHRISTINE |
| Phone | 307-367-6373 |
Population & Service
| Population Served | 115 |
| Service Connections | 8 |
Drinking Water Violations (22)
This water system has 22 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2022 | Jul 31, 2022 | Surface Water Treatment Rule | MR | No | Yes | — | — | — | Resolved | Jul 31, 2022 | Surface Water Treatment Rule |
| May 1, 2018 | May 31, 2018 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | May 31, 2018 | Revised Total Coliform Rule |
| Aug 1, 2006 | Aug 31, 2006 | Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Aug 31, 2006 | Surface Water Treatment Rule |
| Aug 1, 2006 | Aug 31, 2006 | Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Aug 31, 2006 | Surface Water Treatment Rule |
| Jul 1, 2005 | Jul 31, 2005 | Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Jul 31, 2005 | Surface Water Treatment Rule |
| Jul 1, 2005 | Jul 31, 2005 | Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Jul 31, 2005 | Surface Water Treatment Rule |
| Jul 1, 2005 | Jul 31, 2005 | Surface Water Treatment Rule | MR | No | Yes | — | — | — | Resolved | Jul 31, 2005 | Surface Water Treatment Rule |
| Jul 1, 2005 | Jul 31, 2005 | Surface Water Treatment Rule | MR | No | Yes | — | — | — | Resolved | Jul 31, 2005 | Surface Water Treatment Rule |
| Jan 1, 2005 | Dec 31, 2005 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2005 | Nitrate Rule |
| Jan 1, 2005 | Dec 31, 2005 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2005 | Nitrate Rule |
| Aug 1, 2004 | Aug 31, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Aug 31, 2004 | Total Coliform Rule |
| Jan 1, 2003 | Dec 31, 2003 | Nitrate | MR | No | No | — | 10 mg/L | — | Resolved | Dec 31, 2003 | Nitrate Rule |
| Jan 1, 2003 | Dec 31, 2003 | Nitrate | MR | No | No | — | 10 mg/L | — | Resolved | Dec 31, 2003 | Nitrate Rule |
| Sep 1, 2002 | Sep 30, 2002 | Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Sep 30, 2002 | Surface Water Treatment Rule |
| Sep 1, 2002 | Sep 30, 2002 | Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Sep 30, 2002 | Surface Water Treatment Rule |
| Sep 1, 1998 | Sep 30, 1998 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 1998 | Total Coliform Rule |
| Sep 1, 1998 | Sep 30, 1998 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 1998 | Total Coliform Rule |
| Jul 1, 1998 | Jul 31, 1998 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 1998 | Total Coliform Rule |
| Jul 1, 1998 | Jul 31, 1998 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 1998 | Total Coliform Rule |
| Jan 1, 1998 | Dec 31, 1998 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 1998 | Nitrate Rule |
| Jan 1, 1998 | Dec 31, 1998 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 1998 | Nitrate Rule |
| — | — | — | No | No | — | — | — | — | — | — |
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.