Lock and Dam No. 7
PWS ID: MN5850140 · LaCrescent, Minnesota 55947
Population Served
600
Total Violations
7
Health-Based Violations
7
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Federal
- Connections
- 2
- County
- Winona
- School/Daycare
- No
- MCL Violations
- 7
- Monitoring Violations
- 0
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 7 | 1997 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.