HARWOOD HEIGHTS
Illinois - Community Water System - PWSID: IL0311140
System Information
| PWSID | IL0311140 |
| System Name | HARWOOD HEIGHTS |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 13, 1981 |
| Last Reported | Feb 26, 2026 |
Location & Contact
| State | Illinois |
| City | HARDWOOD HEIGHTS |
| ZIP Code | 60706 |
| Address | 7300 WEST WILSON AVE. |
| Organization | MASLO, RONALD |
| Phone | 708-867-7206 |
Population & Service
| Population Served | 9,065 |
| Service Connections | 2,290 |
Drinking Water Violations (37)
This water system has 37 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec 30, 2020 | - | MR | No | No | - | TT | - | Resolved | Jan 19, 2021 | - | |
| Dec 30, 2020 | - | MR | No | No | - | TT | - | Resolved | Jan 19, 2021 | - | |
| Jul 1, 2016 | - | Other | No | No | - | - | - | Resolved | Jun 15, 2017 | - | |
| Jul 1, 2016 | - | Other | No | No | - | - | - | Resolved | Jun 15, 2017 | - | |
| Jul 1, 2015 | - | Other | No | No | - | - | - | Resolved | Jun 15, 2017 | - | |
| Jul 1, 2015 | - | Other | No | No | - | - | - | Resolved | Jun 15, 2017 | - | |
| Jan 1, 1997 | Jun 30, 1997 | MR | No | No | - | TT | - | Resolved | Jun 30, 1997 | - | |
| Sep 1, 1994 | Sep 30, 1994 | MCL | Yes | No | - | 5% of samples | - | Archived | Sep 30, 1994 | - | |
| Sep 1, 1994 | Sep 30, 1994 | MCL | Yes | No | - | 5% of samples | - | Archived | Sep 30, 1994 | - | |
| Sep 1, 1994 | Sep 30, 1994 | MR | No | No | - | 5% of samples | - | Archived | Sep 30, 1994 | - | |
| Sep 1, 1994 | Sep 30, 1994 | MR | No | No | - | 5% of samples | - | Archived | Sep 30, 1994 | - | |
| Mar 1, 1993 | Mar 31, 1993 | MCL | Yes | No | - | 5% of samples | - | Archived | Mar 31, 1993 | - | |
| Mar 1, 1993 | Mar 31, 1993 | MCL | Yes | No | - | 5% of samples | - | Archived | Mar 31, 1993 | - | |
| Dec 21, 1992 | - | TT | Yes | No | - | TT | - | Resolved | Jan 18, 1994 | - | |
| Dec 21, 1992 | - | TT | Yes | No | - | TT | - | Resolved | Jan 18, 1994 | - | |
| Oct 1, 1992 | Mar 31, 1993 | MR | No | No | - | TT | - | Resolved | Mar 31, 1993 | - | |
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About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.