NIABI ZOO
PWS ID: IL3001099 · COAL VALLEY, Illinois 61240
Population Served
5,000
Total Violations
25
Health-Based Violations
11
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Public/Private
- Connections
- 1
- County
- Rock Island
- School/Daycare
- No
- MCL Violations
- 11
- Monitoring Violations
- 11
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 11 | 1995 |
| Nitrate | MR | 5 | 2021 |
| Coliform (TCR) | MR | 3 | 1986 |
| Revised Total Coliform Rule | MON | 3 | 2020 |
| Public Notice | Other | 1 | 2023 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.