BLACK HAWK OIL COMPANY
PWS ID: SD4602207 · BLACK HAWK, South Dakota 57718
Population Served
500
Total Violations
22
Health-Based Violations
6
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Custer
- School/Daycare
- No
- MCL Violations
- 6
- Monitoring Violations
- 11
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 11 | 2009 |
| Coliform (TCR) | MCL | 6 | 2013 |
| Public Notice | Other | 3 | 2010 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.