PALMYRA-MODESTO WATER COMMISSION
PWS ID: IL1175150 · MODESTO, Illinois 62667
Population Served
110
Total Violations
223
Health-Based Violations
190
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 44
- County
- Macoupin
- School/Daycare
- No
- MCL Violations
- 37
- Monitoring Violations
- 26
- Treatment Tech Violations
- 153
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | TT | 66 | 2006 |
| CARBON, TOTAL | TT | 62 | 2025 |
| Atrazine | MCL | 37 | 1995 |
| Interim Enhanced Surface Water Treatment Rule | TT | 25 | 2021 |
| Coliform (TCR) | MR | 5 | 1998 |
| Interim Enhanced Surface Water Treatment Rule | MR | 4 | 2005 |
| TTHM | MR | 4 | 2021 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2021 |
| Consumer Confidence Rule | Other | 2 | 2016 |
| Public Notice | Other | 2 | 2025 |
| Nitrate | MR | 1 | 1979 |
| Mercury | MR | 1 | 1979 |
| Barium | MR | 1 | 1979 |
| Arsenic | MR | 1 | 1979 |
| Chromium | MR | 1 | 1979 |
| Fluoride | MR | 1 | 1979 |
| Selenium | MR | 1 | 1979 |
| Cadmium | MR | 1 | 1979 |
| 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.