CENTRAL MACOUPIN COUNTY RWD
PWS ID: IL1170040 · CARLINVILLE, Illinois 62626
Population Served
1,883
Total Violations
160
Health-Based Violations
141
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 753
- County
- Macoupin
- School/Daycare
- No
- MCL Violations
- 117
- Monitoring Violations
- 16
- Treatment Tech Violations
- 20
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 59 | 2010 |
| Total Haloacetic Acids (HAA5) | MCL | 46 | 2006 |
| Interim Enhanced Surface Water Treatment Rule | TT | 20 | 2015 |
| Coliform (TCR) | MR | 12 | 2012 |
| Coliform (TCR) | MCL | 8 | 2015 |
| Chlorine dioxide | MRDL | 4 | 2011 |
| Chlorine | MR | 4 | 2020 |
| Chlorite | MCL | 4 | 2014 |
| Public Notice | Other | 2 | 2004 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.