THERMOPOLIS, TOWN OF
Wyoming — Community Water System — PWSID: WY5600056
System Information
| PWSID | WY5600056 |
| System Name | THERMOPOLIS, TOWN OF |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | Yes |
| First Reported | Feb 13, 1979 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | Wyoming |
| City | THERMOPOLIS |
| ZIP Code | 82443 |
| Address | P.O. Box 603 |
| Organization | SEILAFF, CHRISTOPHER |
| Phone | 307-864-2658 |
Population & Service
| Population Served | 2,775 |
| Service Connections | 1,630 |
Drinking Water Violations (10)
This water system has 10 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, 2011 | Jul 31, 2011 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Jul 31, 2011 | Interim and Long Term 1 Enhanced Surface Water Treatment Rule |
| Jul 1, 2011 | Jul 31, 2011 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Jul 31, 2011 | Interim and Long Term 1 Enhanced Surface Water Treatment Rule |
| Jul 1, 2007 | Sep 30, 2007 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Sep 30, 2007 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2007 | Sep 30, 2007 | CARBON, TOTAL | MR | No | Yes | — | TT | — | Resolved | Sep 30, 2007 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2007 | Sep 30, 2007 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Sep 30, 2007 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2007 | Dec 31, 2007 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 31, 2007 | Lead and Copper Rule |
| Jan 1, 2007 | Dec 31, 2007 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 31, 2007 | Lead and Copper Rule |
| May 1, 1981 | May 31, 1981 | 2,4,5-TP | MR | No | Yes | — | 0.05 mg/L | — | Archived | May 31, 1981 | Synthetic Organic Chemicals |
| May 1, 1981 | May 31, 1981 | Endrin | MR | No | Yes | — | 0.002 mg/L | — | Archived | May 31, 1981 | Synthetic Organic Chemicals |
| Jul 1, 1976 | Jun 30, 1980 | Gross Alpha, Excl. Radon and U | MR | No | No | — | 15 pCi/L | — | Archived | Jun 30, 1980 | Radionuclides and Revised Rad 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.