OSCO MUTUAL WATER SUPPLY COMPANY, INC.
PWS ID: IL0735200 · OSCO, Illinois 61274
Population Served
80
Total Violations
103
Health-Based Violations
2
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 50
- County
- Henry
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 53
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorine | MR | 14 | 2008 |
| Public Notice | Other | 6 | 2005 |
| Selenium | MR | 4 | 1983 |
| Arsenic | MR | 4 | 1983 |
| Barium | MR | 4 | 1983 |
| Cadmium | MR | 4 | 1983 |
| Fluoride | MR | 4 | 1983 |
| Coliform (TCR) | MR | 4 | 2007 |
| Nitrate | MR | 4 | 1983 |
| Chromium | MR | 4 | 1983 |
| Mercury | MR | 4 | 1983 |
| Lead and Copper Rule | MR | 2 | 2011 |
| Coliform (TCR) | MCL | 2 | 2002 |
| LEAD AND COPPER RULE REVISIONS | RPT | 2 | 2025 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1977 |
| Consumer Confidence Rule | Other | 1 | 2025 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.