TEN SLEEP, TOWN OF
Wyoming — Community Water System — PWSID: WY5600203
System Information
| PWSID | WY5600203 |
| System Name | TEN SLEEP, TOWN OF |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 13, 1979 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | Wyoming |
| City | TEN SLEEP |
| ZIP Code | 82442 |
| Address | P.O. Box 5 (415 5th Street) |
| Organization | HARSTAD, TODD |
| Phone | 307-366-2265 |
Population & Service
| Population Served | 400 |
| Service Connections | 320 |
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, 2021 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Unaddressed | — | Consumer Confidence Rule |
| Sep 1, 2020 | Sep 30, 2020 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Sep 30, 2020 | Revised Total Coliform Rule |
| Sep 1, 2020 | Sep 30, 2020 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Sep 30, 2020 | Revised Total Coliform Rule |
| Aug 6, 2018 | — | E. COLI | MR | No | Yes | — | — | — | Resolved | Jan 27, 2022 | Ground Water Rule |
| Jan 1, 2017 | Dec 31, 2022 | Combined Radium (-226 and -228) | MR | No | Yes | — | 5 pCi/L | — | Archived | Dec 31, 2022 | Radionuclides and Revised Rad Rule |
| Jan 1, 2017 | Dec 31, 2022 | Combined Uranium | MR | No | Yes | — | 30 ug/L | — | Archived | Dec 31, 2022 | Radionuclides and Revised Rad Rule |
| Jun 1, 2015 | Jun 30, 2015 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2015 | Total Coliform Rule |
| Sep 1, 2014 | Sep 30, 2014 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2014 | Total Coliform Rule |
| Sep 1, 2014 | Sep 30, 2014 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2014 | Total Coliform Rule |
| 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.