OQUAWKA
PWS ID: IL0710300 · OQUAWKA, Illinois 61469
Population Served
1,125
Total Violations
17
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 650
- County
- Henderson
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 17
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorine | MR | 6 | 2022 |
| Revised Total Coliform Rule | MON | 4 | 2022 |
| Nitrate | MR | 3 | 2024 |
| Coliform (TCR) | MR | 3 | 1992 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1977 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.