PONDEROSA RIDGE
PWS ID: SD4600863 · RAPID CITY, South Dakota 57702
Population Served
90
Total Violations
117
Health-Based Violations
21
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 33
- County
- Pennington
- School/Daycare
- No
- MCL Violations
- 21
- Monitoring Violations
- 79
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 21 | 2015 |
| Coliform (TCR) | MR | 10 | 2009 |
| Revised Total Coliform Rule | MON | 6 | 2022 |
| E. COLI | MR | 3 | 2023 |
| Coliform (TCR) | Other | 3 | 2000 |
| Consumer Confidence Rule | Other | 2 | 2007 |
| Arsenic | MR | 2 | 1988 |
| Barium | MR | 2 | 1988 |
| Cadmium | MR | 2 | 1988 |
| Fluoride | MR | 2 | 1988 |
| Mercury | MR | 2 | 1988 |
| Vinyl chloride | MR | 2 | 1995 |
| Ethylbenzene | MR | 2 | 1995 |
| 1,1-Dichloroethylene | MR | 2 | 1995 |
| Carbon tetrachloride | MR | 2 | 1995 |
| CHLOROBENZENE | MR | 2 | 1995 |
| Styrene | MR | 2 | 1995 |
| Benzene | MR | 2 | 1995 |
| 1,2-Dichloroethane | MR | 2 | 1995 |
| Toluene | MR | 2 | 1995 |
| Lead and Copper Rule | MR | 2 | 1995 |
| 1,2-Dichloropropane | MR | 2 | 1995 |
| DICHLOROMETHANE | MR | 2 | 1995 |
| p-Dichlorobenzene | MR | 2 | 1995 |
| 1,2,4-Trichlorobenzene | MR | 2 | 1995 |
| o-Dichlorobenzene | MR | 2 | 1995 |
| Trichloroethylene | MR | 2 | 1995 |
| Tetrachloroethylene | MR | 2 | 1995 |
| Chromium | MR | 2 | 1988 |
| Xylenes, Total | MR | 2 | 1995 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.