ILLIOPOLIS
PWS ID: IL1670550 · ILLIOPOLIS, Illinois 62539
Population Served
1,037
Total Violations
68
Health-Based Violations
38
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 445
- County
- Sangamon
- School/Daycare
- No
- MCL Violations
- 38
- Monitoring Violations
- 19
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 38 | 2022 |
| TTHM | MR | 7 | 2025 |
| Lead and Copper Rule | MR | 6 | 2023 |
| Consumer Confidence Rule | Other | 4 | 2023 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2025 |
| Chlorine | MR | 2 | 2020 |
| Public Notice | Other | 2 | 2006 |
| 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.