SIPHON HILL WATER ASSOCIATION
PWS ID: SD4600272 · RAPID CITY, South Dakota 57702
Population Served
68
Total Violations
643
Health-Based Violations
10
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 29
- County
- Pennington
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 596
- Treatment Tech Violations
- 8
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 36 | 1999 |
| Xylenes, Total | MR | 22 | 1999 |
| Toluene | MR | 22 | 1999 |
| Vinyl chloride | MR | 21 | 1999 |
| Tetrachloroethylene | MR | 20 | 1999 |
| Ethylbenzene | MR | 20 | 1999 |
| 1,2,4-Trichlorobenzene | MR | 20 | 1999 |
| 1,1,2-Trichloroethane | MR | 20 | 1999 |
| 1,1-Dichloroethylene | MR | 20 | 1999 |
| Carbon tetrachloride | MR | 20 | 1999 |
| CHLOROBENZENE | MR | 20 | 1999 |
| Styrene | MR | 20 | 1999 |
| o-Dichlorobenzene | MR | 20 | 1999 |
| trans-1,2-Dichloroethylene | MR | 20 | 1999 |
| 1,2-Dichloropropane | MR | 20 | 1999 |
| Benzene | MR | 20 | 1999 |
| Trichloroethylene | MR | 20 | 1999 |
| cis-1,2-Dichloroethylene | MR | 20 | 1999 |
| 1,1,1-Trichloroethane | MR | 20 | 1999 |
| p-Dichlorobenzene | MR | 20 | 1999 |
| 1,2-Dichloroethane | MR | 20 | 1999 |
| DICHLOROMETHANE | MR | 20 | 1999 |
| Lead and Copper Rule | MR | 15 | 1999 |
| Coliform (TCR) | Other | 12 | 1999 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | TT | 6 | 2015 |
| Nitrate | MR | 5 | 2001 |
| Gross Alpha, Excl. Radon and U | MR | 3 | 1988 |
| LASSO | MR | 3 | 1996 |
| Hexachlorocyclopentadiene | MR | 3 | 1996 |
| Endrin | MR | 3 | 1996 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.