CHELSEA ECONOMIC DEV. AUTH.
PWS ID: OK1021504 · CHELSEA, Oklahoma 74016
Population Served
1,964
Total Violations
203
Health-Based Violations
29
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,117
- County
- Rogers
- School/Daycare
- No
- MCL Violations
- 25
- Monitoring Violations
- 157
- Treatment Tech Violations
- 4
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | MCL | 25 | 2009 |
| CARBON, TOTAL | MR | 20 | 2008 |
| Nitrate-Nitrite | MR | 12 | 2016 |
| Lead and Copper Rule | MR | 9 | 2013 |
| TTHM | MR | 8 | 2008 |
| Total Haloacetic Acids (HAA5) | MR | 8 | 2008 |
| Coliform (TCR) | MR | 8 | 2014 |
| Surface Water Treatment Rule | TT | 4 | 1999 |
| Arsenic | MR | 4 | 2007 |
| cis-1,2-Dichloroethylene | MR | 4 | 2014 |
| DICHLOROMETHANE | MR | 4 | 2014 |
| p-Dichlorobenzene | MR | 4 | 2014 |
| 1,1-Dichloroethylene | MR | 4 | 2014 |
| 1,1,1-Trichloroethane | MR | 4 | 2014 |
| Carbon tetrachloride | MR | 4 | 2014 |
| 1,1,2-Trichloroethane | MR | 4 | 2014 |
| Tetrachloroethylene | MR | 4 | 2014 |
| CHLOROBENZENE | MR | 4 | 2014 |
| Benzene | MR | 4 | 2014 |
| Ethylbenzene | MR | 4 | 2014 |
| Styrene | MR | 4 | 2014 |
| Interim Enhanced Surface Water Treatment Rule | MR | 4 | 2019 |
| Toluene | MR | 4 | 2014 |
| o-Dichlorobenzene | MR | 4 | 2014 |
| 1,2-Dichloroethane | MR | 4 | 2014 |
| trans-1,2-Dichloroethylene | MR | 4 | 2014 |
| 1,2,4-Trichlorobenzene | MR | 4 | 2014 |
| 1,2-Dichloropropane | MR | 4 | 2014 |
| Xylenes, Total | MR | 4 | 2014 |
| Vinyl chloride | MR | 4 | 2014 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.