SAND CREEK TRADING POST
PWS ID: WY5600300 · SPEARFISH, Wyoming 57783
Population Served
110
Total Violations
92
Health-Based Violations
9
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Private
- Connections
- 5
- County
- Crook
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 79
- Treatment Tech Violations
- 5
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 38 | 2015 |
| Revised Total Coliform Rule | MON | 26 | 2025 |
| Nitrate | MR | 9 | 2010 |
| Coliform (TCR) | MCL | 4 | 2005 |
| E. COLI | MR | 3 | 2025 |
| Nitrate-Nitrite | MR | 3 | 2023 |
| Groundwater Rule | TT | 3 | 2013 |
| Revised Total Coliform Rule | TT | 2 | 2022 |
| Revised Total Coliform Rule | Other | 2 | 2023 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.