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 | Mar 2, 2026 |
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 (37)
This water system has 37 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2025 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Oct 1, 2022 | - | MR | No | No | - | TT | - | Resolved | Mar 5, 2024 | - | |
| Jul 1, 2021 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Sep 1, 2020 | Sep 30, 2020 | MON | No | Yes | - | - | - | Resolved | Sep 30, 2020 | - | |
| Sep 1, 2020 | Sep 30, 2020 | MON | No | Yes | - | - | - | Resolved | Sep 30, 2020 | - | |
| Aug 6, 2018 | - | MR | No | Yes | - | - | - | Resolved | Jan 27, 2022 | - | |
| Jan 1, 2017 | Dec 31, 2022 | MR | No | Yes | - | 30 ug/L | - | Archived | Dec 31, 2022 | - | |
| Jan 1, 2017 | Dec 31, 2022 | MR | No | Yes | - | 5 pCi/L | - | Archived | Dec 31, 2022 | - | |
| Jan 1, 2017 | Dec 31, 2022 | MR | No | Yes | - | 15 pCi/L | - | Archived | Dec 31, 2022 | - | |
| Jan 1, 2017 | Dec 31, 2022 | MR | No | Yes | - | - | - | Archived | Dec 31, 2022 | - | |
| Jan 1, 2017 | Dec 31, 2022 | MR | No | Yes | - | - | - | Archived | Dec 31, 2022 | - | |
| Jun 1, 2015 | Jun 30, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2015 | - | |
| Jun 1, 2015 | Jun 30, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2015 | - | |
| Sep 1, 2014 | Sep 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2014 | - | |
| Sep 1, 2014 | Sep 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2014 | - | |
| Jul 1, 1999 | Jul 31, 1999 | MR | No | No | - | 5% of samples | - | Archived | Jul 31, 1999 | - | |
| May 1, 1997 | May 31, 1997 | MR | No | No | - | 5% of samples | - | Archived | May 31, 1997 | - | |
| Jul 1, 1995 | Jul 31, 1995 | MR | No | No | - | 5% of samples | - | Archived | Jul 31, 1995 | - | |
| Sep 1, 1993 | Sep 30, 1993 | MR | No | No | - | 5% of samples | - | Archived | Sep 30, 1993 | - | |
| Sep 1, 1993 | Sep 30, 1993 | MR | No | Yes | - | 5% of samples | - | Archived | Sep 30, 1993 | - | |
| Jan 1, 1993 | Dec 31, 1993 | MR | No | Yes | - | 10 mg/L | - | Archived | Dec 31, 1993 | - | |
| Oct 1, 1992 | Oct 31, 1992 | MR | No | No | - | 5% of samples | - | Archived | Oct 31, 1992 | - | |
| Apr 1, 1982 | Mar 31, 1983 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Mar 31, 1983 | - | |
| Apr 1, 1982 | Mar 31, 1983 | MR | No | Yes | - | 0.010 mg/L | - | Archived | Mar 31, 1983 | - | |
| Apr 1, 1982 | Mar 31, 1983 | MR | No | Yes | - | 2 mg/L | - | Archived | Mar 31, 1983 | - | |
| Apr 1, 1982 | Mar 31, 1983 | MR | No | Yes | - | 4.0 mg/L | - | Archived | Mar 31, 1983 | - | |
| Apr 1, 1982 | Mar 31, 1983 | MR | No | Yes | - | 10 mg/L | - | Archived | Mar 31, 1983 | - | |
| Apr 1, 1982 | Mar 31, 1983 | MR | No | Yes | - | 0.05 mg/L | - | Archived | Mar 31, 1983 | - | |
| Apr 1, 1982 | Mar 31, 1983 | MR | No | Yes | - | 0.1 mg/L | - | Archived | Mar 31, 1983 | - | |
| Apr 1, 1982 | Mar 31, 1983 | MR | No | Yes | - | 0.002 mg/L | - | Archived | Mar 31, 1983 | - | |
| Jul 1, 1976 | Jun 30, 1980 | MR | No | No | - | 15 pCi/L | - | Archived | Jun 30, 1980 | - | |
| Jul 1, 1976 | Jun 30, 1980 | MR | No | No | - | 5 pCi/L | - | Archived | Jun 30, 1980 | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | 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.