DECORAH SALES COMMISSION
PWS ID: IA9630212 · DECORAH, Iowa 52101
Population Served
105
Total Violations
91
Health-Based Violations
25
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Winneshiek
- School/Daycare
- No
- MCL Violations
- 25
- Monitoring Violations
- 66
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 54 | 2011 |
| Coliform (TCR) | MCL | 25 | 2009 |
| Revised Total Coliform Rule | MON | 9 | 2021 |
| Nitrite | MR | 3 | 2006 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.