WALNUT
PWS ID: IL0111100 · WALNUT, Illinois 61376
Population Served
1,311
Total Violations
31
Health-Based Violations
10
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 608
- County
- Bureau
- School/Daycare
- No
- MCL Violations
- 5
- Monitoring Violations
- 17
- Treatment Tech Violations
- 5
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 8 | 2022 |
| Coliform (TCR) | MCL | 5 | 1998 |
| Lead and Copper Rule | TT | 5 | 2019 |
| TTHM | MR | 4 | 2024 |
| Consumer Confidence Rule | Other | 4 | 2024 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2024 |
| 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.