WONDER LAKE (NIU)
Illinois — Community Water System — PWSID: IL1115850
System Information
| PWSID | IL1115850 |
| System Name | WONDER LAKE (NIU) |
| 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 | 1,950 |
| Service Connections | 780 |
Drinking Water Violations (404)
This water system has 404 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nov 1, 2024 | Nov 30, 2024 | MON | No | Yes | — | — | — | Resolved | Nov 30, 2024 | — | |
| Nov 1, 2024 | Nov 30, 2024 | MON | No | Yes | — | — | — | Resolved | Nov 30, 2024 | — | |
| Nov 1, 2024 | Nov 30, 2024 | MON | No | Yes | — | — | — | Resolved | Nov 30, 2024 | — | |
| Nov 1, 2024 | Nov 30, 2024 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Nov 30, 2024 | — | |
| Nov 1, 2024 | Nov 30, 2024 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Nov 30, 2024 | — | |
| Nov 1, 2024 | Nov 30, 2024 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Nov 30, 2024 | — | |
| Nov 1, 2024 | Nov 30, 2024 | MON | No | Yes | — | — | — | Resolved | Nov 30, 2024 | — | |
| Nov 1, 2024 | Nov 30, 2024 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Nov 30, 2024 | — | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2013 | — | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2013 | — | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2013 | — | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2013 | — | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2013 | — | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2013 | — | |
| Apr 1, 2013 | Jun 30, 2013 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2013 | — | |
| Apr 1, 2013 | Jun 30, 2013 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2013 | — | |
| Apr 1, 2013 | Jun 30, 2013 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2013 | — | |
| Apr 1, 2013 | Jun 30, 2013 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2013 | — | |
| Apr 1, 2013 | Jun 30, 2013 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2013 | — | |
| Apr 1, 2013 | Jun 30, 2013 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2013 | — | |
| 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 | — | |
| 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 | — | |
| 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 | — | |
| Jun 1, 1998 | Jun 30, 1998 | MR | No | No | — | 5% of samples | — | Archived | Jun 30, 1998 | — | |
| Jun 1, 1998 | Jun 30, 1998 | MCL | Yes | No | — | 5% of samples | — | Archived | Jun 30, 1998 | — | |
| Jun 1, 1998 | Jun 30, 1998 | MCL | Yes | No | — | 5% of samples | — | Archived | Jun 30, 1998 | — | |
| Jun 1, 1998 | Jun 30, 1998 | MR | No | No | — | 5% of samples | — | Archived | Jun 30, 1998 | — | |
| Dec 1, 1993 | Dec 31, 1993 | MR | No | No | — | 5% of samples | — | Archived | Dec 31, 1993 | — | |
| Dec 1, 1993 | Dec 31, 1993 | MR | No | No | — | 5% of samples | — | Archived | Dec 31, 1993 | — | |
| Dec 1, 1993 | Dec 31, 1993 | MR | No | No | — | 5% of samples | — | Archived | Dec 31, 1993 | — | |
| Dec 1, 1993 | Dec 31, 1993 | MR | No | No | — | 5% of samples | — | Archived | Dec 31, 1993 | — | |
| Nov 1, 1993 | Nov 30, 1993 | MCL | Yes | No | — | 5% of samples | — | Archived | Nov 30, 1993 | — | |
| Nov 1, 1993 | Nov 30, 1993 | MCL | Yes | No | — | 5% of samples | — | Archived | Nov 30, 1993 | — | |
| Nov 1, 1993 | Nov 30, 1993 | MR | No | No | — | 5% of samples | — | Archived | Nov 30, 1993 | — | |
| Nov 1, 1993 | Nov 30, 1993 | MCL | Yes | No | — | 5% of samples | — | Archived | Nov 30, 1993 | — | |
| Nov 1, 1993 | Nov 30, 1993 | MR | No | No | — | 5% of samples | — | Archived | Nov 30, 1993 | — | |
| Nov 1, 1993 | Nov 30, 1993 | MR | No | No | — | 5% of samples | — | Archived | Nov 30, 1993 | — | |
| Nov 1, 1993 | Nov 30, 1993 | MCL | Yes | No | — | 5% of samples | — | Archived | Nov 30, 1993 | — | |
| Nov 1, 1993 | Nov 30, 1993 | MR | No | No | — | 5% of samples | — | Archived | Nov 30, 1993 | — | |
| 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 | — | 0.1 mg/L | — | Archived | Jun 30, 1993 | — | |
| Apr 1, 1993 | Jun 30, 1993 | MR | No | Yes | — | 0.075 mg/L | — | Archived | Jun 30, 1993 | — | |
| Apr 1, 1993 | Jun 30, 1993 | MR | No | Yes | — | 0.075 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.