LYON-SIOUX RWS-DOON
PWS ID: IA6000733 · ROCK RAPIDS, Iowa 51246
Population Served
1,765
Total Violations
26
Health-Based Violations
13
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 706
- County
- Lyon
- School/Daycare
- No
- MCL Violations
- 13
- Monitoring Violations
- 7
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MCL | 13 | 1994 |
| Nitrate | MR | 7 | 2018 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.