WONDER LAKE
Illinois - Community Water System - PWSID: IL1115750
System Information
| PWSID | IL1115750 |
| System Name | WONDER LAKE |
| System Type | Community Water System |
| Water Source | Ground Water |
| 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 | WONDER LAKE |
| ZIP Code | 60097 |
| Address | Village of Wonder Lake |
| Organization | MANGUM, JAMES |
| Phone | 815-277-9589 |
Population & Service
| Population Served | 3,870 |
| Service Connections | 1,548 |
Drinking Water Violations (403)
This water system has 403 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 | - | MR | No | No | - | TT | - | Unaddressed | - | - | |
| Jul 1, 2025 | - | MR | No | No | - | TT | - | Unaddressed | - | - | |
| Apr 1, 2025 | - | MR | No | No | - | TT | - | Resolved | Aug 27, 2025 | - | |
| Apr 1, 2025 | - | MR | No | No | - | TT | - | Resolved | Aug 27, 2025 | - | |
| Feb 10, 2024 | - | Other | No | No | - | - | - | Resolved | Apr 8, 2024 | - | |
| Feb 10, 2024 | - | Other | No | No | - | - | - | Resolved | Apr 8, 2024 | - | |
| Apr 2, 2023 | - | TT | Yes | No | - | TT | - | Resolved | Jun 22, 2023 | - | |
| Apr 2, 2023 | - | TT | Yes | No | - | TT | - | Resolved | Jun 22, 2023 | - | |
| Apr 2, 2023 | - | TT | Yes | No | - | TT | - | Resolved | Jun 22, 2023 | - | |
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Mar 12, 2005 | - | Other | No | No | - | - | - | Resolved | Jul 28, 2005 | - | |
| Mar 12, 2005 | - | Other | No | No | - | - | - | Resolved | Jul 28, 2005 | - | |
| Mar 12, 2005 | - | Other | No | No | - | - | - | Resolved | Jul 28, 2005 | - | |
| Mar 12, 2005 | - | Other | No | No | - | - | - | Resolved | Jul 28, 2005 | - | |
| Mar 12, 2005 | - | Other | No | No | - | - | - | Resolved | Jul 28, 2005 | - | |
| Mar 12, 2005 | - | Other | No | No | - | - | - | Resolved | Jul 28, 2005 | - | |
| Mar 12, 2005 | - | Other | No | No | - | - | - | Resolved | Jul 28, 2005 | - | |
| Mar 12, 2005 | - | Other | No | No | - | - | - | Resolved | Jul 28, 2005 | - | |
| Oct 1, 2004 | - | MR | No | No | - | TT | - | Resolved | Sep 30, 2005 | - | |
| Oct 1, 2004 | - | MR | No | No | - | TT | - | Resolved | Sep 30, 2005 | - | |
| Oct 1, 2004 | - | MR | No | No | - | TT | - | Resolved | Sep 30, 2005 | - | |
| Oct 1, 2004 | - | MR | No | No | - | TT | - | Resolved | Sep 30, 2005 | - | |
| Oct 1, 2004 | - | MR | No | No | - | TT | - | Resolved | Sep 30, 2005 | - | |
| Oct 1, 2004 | - | MR | No | No | - | TT | - | Resolved | Sep 30, 2005 | - | |
| Apr 1, 2004 | Jun 30, 2004 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Jun 30, 2004 | - | |
| Apr 1, 2004 | Jun 30, 2004 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Jun 30, 2004 | - | |
| Apr 1, 2004 | Jun 30, 2004 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Jun 30, 2004 | - | |
| Apr 1, 2004 | Jun 30, 2004 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Jun 30, 2004 | - | |
| Jan 1, 2004 | Jan 31, 2004 | MR | No | No | - | 5% of samples | - | Archived | Jan 31, 2004 | - | |
| Jan 1, 2004 | Jan 31, 2004 | MR | No | No | - | 5% of samples | - | Archived | Jan 31, 2004 | - | |
| Jan 1, 2004 | Jan 31, 2004 | MR | No | No | - | 5% of samples | - | Archived | Jan 31, 2004 | - | |
| May 1, 2002 | May 31, 2002 | MR | No | No | - | 5% of samples | - | Archived | May 31, 2002 | - | |
| May 1, 2002 | May 31, 2002 | MR | No | No | - | 5% of samples | - | Archived | May 31, 2002 | - | |
| May 1, 2002 | May 31, 2002 | MR | No | No | - | 5% of samples | - | Archived | May 31, 2002 | - | |
| Jan 1, 2001 | Jan 31, 2001 | MCL | Yes | No | - | 5% of samples | - | Archived | Jan 31, 2001 | - | |
| Jan 1, 2001 | Jan 31, 2001 | MCL | Yes | No | - | 5% of samples | - | Archived | Jan 31, 2001 | - | |
| Jul 1, 1998 | Jul 31, 1998 | MR | No | No | - | 5% of samples | - | Archived | Jul 31, 1998 | - | |
| Jul 1, 1998 | Jul 31, 1998 | MR | No | No | - | 5% of samples | - | Archived | Jul 31, 1998 | - | |
| Jul 1, 1995 | Jul 31, 1995 | MR | No | No | - | 5% of samples | - | Archived | Jul 31, 1995 | - | |
| Jul 1, 1995 | Jul 31, 1995 | MR | No | No | - | 5% of samples | - | Archived | Jul 31, 1995 | - | |
| May 1, 1993 | May 31, 1993 | MR | No | No | - | 5% of samples | - | Archived | May 31, 1993 | - | |
| May 1, 1993 | May 31, 1993 | MR | No | No | - | 5% of samples | - | Archived | May 31, 1993 | - | |
| Apr 1, 1993 | Jun 30, 1993 | MR | No | Yes | - | 0.6 mg/L | - | Archived | Jun 30, 1993 | - | |
| Apr 1, 1993 | Jun 30, 1993 | MR | No | Yes | - | 0.6 mg/L | - | Archived | Jun 30, 1993 | - | |
| Apr 1, 1993 | Jun 30, 1993 | MR | No | Yes | - | 0.6 mg/L | - | Archived | Jun 30, 1993 | - | |
| Apr 1, 1993 | Jun 30, 1993 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Jun 30, 1993 | - | |
| Apr 1, 1993 | Jun 30, 1993 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Jun 30, 1993 | - |
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.