CHESTERFIELD
PWS ID: IL1170200 · CHESTERFIELD, Illinois 62630
Population Served
170
Total Violations
73
Health-Based Violations
32
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 130
- County
- Macoupin
- School/Daycare
- No
- MCL Violations
- 8
- Monitoring Violations
- 33
- Treatment Tech Violations
- 20
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Interim Enhanced Surface Water Treatment Rule | TT | 20 | 2015 |
| Chlorine | MR | 12 | 2019 |
| Lead and Copper Rule | MR | 8 | 2015 |
| Coliform (TCR) | MR | 8 | 2015 |
| Consumer Confidence Rule | Other | 6 | 2014 |
| Coliform (TCR) | MCL | 4 | 2015 |
| Revised Total Coliform Rule | MON | 4 | 2019 |
| Chlorine dioxide | MRDL | 4 | 2011 |
| Chlorite | MCL | 4 | 2014 |
| Public Notice | Other | 2 | 2014 |
| 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.