OAK LAWN
Illinois - Community Water System - PWSID: IL0312220
System Information
| PWSID | IL0312220 |
| System Name | OAK LAWN |
| 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 | OAK LAWN |
| ZIP Code | 60453 |
| Address | Oak Lawn Village Hall |
| Organization | MEYER, WILLIAM |
| Phone | 708-499-7749 |
Population & Service
| Population Served | 58,362 |
| Service Connections | 16,766 |
Drinking Water Violations (39)
This water system has 39 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2025 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Jul 1, 2023 | - | Other | No | No | - | - | - | Resolved | May 17, 2024 | - | |
| Jul 1, 2023 | - | Other | No | No | - | - | - | Resolved | May 17, 2024 | - | |
| Dec 30, 2022 | - | MR | No | No | - | TT | - | Resolved | Jan 3, 2023 | - | |
| Dec 30, 2022 | - | MR | No | No | - | TT | - | Resolved | Jan 3, 2023 | - | |
| Jul 1, 2016 | - | Other | No | No | - | - | - | Resolved | Jun 23, 2017 | - | |
| Jul 1, 2016 | - | Other | No | No | - | - | - | Resolved | Jun 23, 2017 | - | |
| Sep 1, 2015 | Sep 30, 2015 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2015 | - | |
| Sep 1, 2015 | Sep 30, 2015 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2015 | - | |
| Sep 1, 2015 | Sep 30, 2015 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2015 | - | |
| Sep 1, 2015 | Sep 30, 2015 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2015 | - | |
| Jul 1, 2015 | Sep 30, 2015 | MR | No | No | - | 4.0 mg/L | - | Resolved | Sep 30, 2015 | - | |
| Jul 1, 2015 | Sep 30, 2015 | MR | No | No | - | 4.0 mg/L | - | Resolved | Sep 30, 2015 | - | |
| Jul 1, 2015 | Sep 30, 2015 | MR | No | No | - | 4.0 mg/L | - | Resolved | Sep 30, 2015 | - | |
| Jul 1, 2015 | Sep 30, 2015 | MR | No | No | - | 4.0 mg/L | - | Resolved | Sep 30, 2015 | - | |
| Sep 1, 2000 | Sep 30, 2000 | MR | No | No | - | 5% of samples | - | Archived | Sep 30, 2000 | - | |
| Sep 1, 2000 | Sep 30, 2000 | MR | No | No | - | 5% of samples | - | Archived | Sep 30, 2000 | - | |
| Aug 1, 1997 | Aug 31, 1997 | MR | No | No | - | 5% of samples | - | Archived | Aug 31, 1997 | - | |
| Aug 1, 1997 | Aug 31, 1997 | MR | No | No | - | 5% of samples | - | Archived | Aug 31, 1997 | - | |
| Jan 1, 1993 | - | TT | Yes | No | - | TT | - | Resolved | Feb 5, 1995 | - | |
| Jan 1, 1993 | - | TT | Yes | No | - | TT | - | Resolved | Feb 5, 1995 | - | |
| Jan 1, 1993 | - | TT | Yes | No | - | TT | - | Resolved | Feb 5, 1995 | - | |
| Jan 1, 1993 | - | TT | Yes | No | - | TT | - | Resolved | Feb 5, 1995 | - | |
| Jan 1, 1993 | - | TT | Yes | No | - | TT | - | Resolved | Feb 5, 1995 | - | |
| Dec 7, 1992 | - | TT | Yes | No | - | TT | - | Resolved | Jan 18, 1994 | - | |
| Dec 7, 1992 | - | TT | Yes | No | - | TT | - | Resolved | Jan 18, 1994 | - | |
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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.