CASTLEWOOD
PWS ID: SD4600002 · CASTLEWOOD, South Dakota 57223
Population Served
698
Total Violations
151
Health-Based Violations
11
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 328
- County
- Hamlin
- School/Daycare
- No
- MCL Violations
- 9
- Monitoring Violations
- 121
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 9 | 2002 |
| Lead and Copper Rule | MR | 6 | 1998 |
| Coliform (TCR) | MR | 4 | 1995 |
| Tetrachloroethylene | MR | 4 | 1996 |
| 1,2,4-Trichlorobenzene | MR | 4 | 1996 |
| Xylenes, Total | MR | 4 | 1996 |
| 1,1-Dichloroethylene | MR | 4 | 1996 |
| CHLOROBENZENE | MR | 4 | 1996 |
| Carbon tetrachloride | MR | 4 | 1996 |
| Styrene | MR | 4 | 1996 |
| o-Dichlorobenzene | MR | 4 | 1996 |
| 1,2-Dichloroethane | MR | 4 | 1996 |
| Trichloroethylene | MR | 4 | 1996 |
| cis-1,2-Dichloroethylene | MR | 4 | 1996 |
| Vinyl chloride | MR | 4 | 1996 |
| Ethylbenzene | MR | 4 | 1996 |
| DICHLOROMETHANE | MR | 4 | 1996 |
| 1,1,2-Trichloroethane | MR | 4 | 1996 |
| 1,2-Dichloropropane | MR | 4 | 1996 |
| Toluene | MR | 4 | 1996 |
| Benzene | MR | 4 | 1996 |
| p-Dichlorobenzene | MR | 4 | 1996 |
| 1,1,1-Trichloroethane | MR | 4 | 1996 |
| trans-1,2-Dichloroethylene | MR | 4 | 1996 |
| Asbestos | MR | 3 | 1993 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | TT | 2 | 2021 |
| Arsenic | MR | 2 | 1996 |
| Barium | MR | 2 | 1996 |
| Cadmium | MR | 2 | 1996 |
| Chromium | MR | 2 | 1996 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.