LARSSON'S CROOKED CREEK CG-SOUTH WEL
PWS ID: SD4602171 · BLACK HAWK, South Dakota 57718
Population Served
52
Total Violations
39
Health-Based Violations
21
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Private
- Connections
- 26
- County
- Pennington
- School/Daycare
- No
- MCL Violations
- 19
- Monitoring Violations
- 13
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 10 | 2002 |
| Nitrate | MCL | 9 | 2009 |
| Public Notice | Other | 5 | 2019 |
| Nitrate | MR | 5 | 2014 |
| Coliform (TCR) | MR | 3 | 2014 |
| Revised Total Coliform Rule | MON | 3 | 2018 |
| Groundwater Rule | TT | 2 | 2011 |
| Nitrite | MR | 2 | 1995 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.