UNITY WATER CORPORATION
PWS ID: IL1315300 · SHERRARD, Illinois 61281
Population Served
93
Total Violations
90
Health-Based Violations
22
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 37
- County
- Mercer
- School/Daycare
- No
- MCL Violations
- 22
- Monitoring Violations
- 46
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 22 | 2009 |
| Coliform (TCR) | MR | 21 | 2013 |
| Nitrate | MR | 8 | 2020 |
| Chlorine | MR | 4 | 2013 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2017 |
| TTHM | MR | 4 | 2017 |
| Fluoride | MR | 3 | 1999 |
| Lead and Copper Rule | MR | 1 | 1994 |
| 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.