LEWIS AND CLARK STATE PARK
PWS ID: IA6739949 · ONAWA, Iowa 51040
Population Served
67
Total Violations
58
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- State
- Connections
- 1
- County
- Monona
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 43
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 21 | 2023 |
| Coliform (TCR) | MR | 13 | 2005 |
| Nitrite | MR | 9 | 2013 |
| Public Notice | Other | 3 | 2024 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.