COWLEY, TOWN OF
PWS ID: WY5600206 · COWLEY, Wyoming 82420
Population Served
800
Total Violations
47
Health-Based Violations
5
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 375
- County
- Big Horn
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 41
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 5 | 1994 |
| Groundwater Rule | TT | 3 | 2019 |
| Nitrate | MR | 2 | 1993 |
| Coliform (TCR) | MCL | 2 | 1992 |
| Lead and Copper Rule | MR | 2 | 2024 |
| Chromium | MR | 1 | 1982 |
| Cadmium | MR | 1 | 1982 |
| Benzene | MR | 1 | 1999 |
| Vinyl chloride | MR | 1 | 1999 |
| cis-1,2-Dichloroethylene | MR | 1 | 1999 |
| Tetrachloroethylene | MR | 1 | 1999 |
| Toluene | MR | 1 | 1999 |
| 1,2,4-Trichlorobenzene | MR | 1 | 1999 |
| 1,1,2-Trichloroethane | MR | 1 | 1999 |
| Selenium | MR | 1 | 1982 |
| Mercury | MR | 1 | 1982 |
| E. COLI | MR | 1 | 2025 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1976 |
| Combined Radium (-226 and -228) | MR | 1 | 1976 |
| 1,1-Dichloroethylene | MR | 1 | 1999 |
| DICHLOROMETHANE | MR | 1 | 1999 |
| Arsenic | MR | 1 | 1982 |
| Styrene | MR | 1 | 1999 |
| trans-1,2-Dichloroethylene | MR | 1 | 1999 |
| Carbon tetrachloride | MR | 1 | 1999 |
| 1,2-Dichloroethane | MR | 1 | 1999 |
| p-Dichlorobenzene | MR | 1 | 1999 |
| Xylenes, Total | MR | 1 | 1999 |
| 1,2-Dichloropropane | MR | 1 | 1999 |
| Fluoride | MR | 1 | 1982 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.