NORTH REGIONAL WATER FAC
PWS ID: IL0435850 · DARIEN, Illinois 60561
Population Served
770
Total Violations
153
Health-Based Violations
6
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 256
- County
- DuPage
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 95
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 20 | 1992 |
| Arsenic | MR | 9 | 1992 |
| Barium | MR | 9 | 1992 |
| Cadmium | MR | 9 | 1992 |
| Chromium | MR | 9 | 1992 |
| Nitrate | MR | 9 | 1992 |
| Selenium | MR | 9 | 1992 |
| Fluoride | MR | 9 | 1992 |
| Mercury | MR | 9 | 1992 |
| Coliform (TCR) | MCL | 4 | 1992 |
| Lead and Copper Rule | MR | 2 | 1994 |
| Lead and Copper Rule | TT | 2 | 1995 |
| 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.