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 | Dec 4, 2025 |
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 (23)
This water system has 23 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 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jan 19, 2021 | Lead and Copper Rule |
| Dec 30, 2020 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jan 19, 2021 | Lead and Copper Rule |
| Jul 1, 2016 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jun 15, 2017 | Consumer Confidence Rule |
| Jul 1, 2016 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jun 15, 2017 | Consumer Confidence Rule |
| Jul 1, 2015 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jun 15, 2017 | Consumer Confidence Rule |
| Jul 1, 2015 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jun 15, 2017 | Consumer Confidence Rule |
| Jan 1, 1997 | Jun 30, 1997 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 30, 1997 | Lead and Copper Rule |
| Sep 1, 1994 | Sep 30, 1994 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Sep 30, 1994 | Total Coliform Rule |
| Sep 1, 1994 | Sep 30, 1994 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Sep 30, 1994 | Total Coliform Rule |
| Sep 1, 1994 | Sep 30, 1994 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Sep 30, 1994 | Total Coliform Rule |
| Sep 1, 1994 | Sep 30, 1994 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Sep 30, 1994 | Total Coliform Rule |
| Mar 1, 1993 | Mar 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Mar 31, 1993 | Total Coliform Rule |
| Mar 1, 1993 | Mar 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Mar 31, 1993 | Total Coliform Rule |
| Dec 21, 1992 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Jan 18, 1994 | Lead and Copper Rule |
| Dec 21, 1992 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Jan 18, 1994 | Lead and Copper Rule |
| Oct 1, 1992 | Mar 31, 1993 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Mar 31, 1993 | Lead and Copper Rule |
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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.