JOHNSBURG JR HIGH SCHOOL
PWS ID: IL3062612 · JOHNSBURG, Illinois 60051
Population Served
575
Total Violations
61
Health-Based Violations
2
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Local
- Connections
- 2
- County
- McHenry
- School/Daycare
- Yes
- MCL Violations
- 0
- Monitoring Violations
- 59
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorine | MR | 9 | 2024 |
| Barium | MR | 5 | 2002 |
| Chromium | MR | 5 | 2002 |
| Mercury | MR | 5 | 2002 |
| Beryllium, Total | MR | 5 | 2002 |
| Thallium, Total | MR | 5 | 2002 |
| Selenium | MR | 5 | 2002 |
| Antimony, Total | MR | 5 | 2002 |
| Cadmium | MR | 5 | 2002 |
| CYANIDE | MR | 5 | 2002 |
| Lead and Copper Rule | MR | 4 | 2023 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | TT | 2 | 2011 |
| Coliform (TCR) | MR | 1 | 1997 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.