BLACK SANDY STATE PARK
PWS ID: MT0003427 · HELENA, Montana 59620
Population Served
100
Total Violations
24
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- State
- Connections
- 12
- County
- Lewis and Clark
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 24
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 14 | 2011 |
| Nitrate-Nitrite | MR | 6 | 2003 |
| Revised Total Coliform Rule | MON | 4 | 2019 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.