Dennison
PWS ID: MN1250021 · Dennison, Minnesota 55018
Population Served
220
Total Violations
28
Health-Based Violations
12
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 93
- County
- Goodhue
- School/Daycare
- No
- MCL Violations
- 12
- Monitoring Violations
- 13
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Gross Alpha, Excl. Radon and U | MCL | 12 | 2025 |
| Nitrate | MR | 5 | 1994 |
| Revised Total Coliform Rule | MON | 5 | 2022 |
| Chlorine | MR | 3 | 2022 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.