WILLIAMSFIELD
Illinois - Community Water System - PWSID: IL0950650
System Information
| PWSID | IL0950650 |
| System Name | WILLIAMSFIELD |
| 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 | WILLIAMSFIELD |
| ZIP Code | 61489 |
| Address | P.O. Box 417 |
| Organization | COURSON, TORI |
| Phone | 309-221-6886 |
Population & Service
| Population Served | 575 |
| Service Connections | 275 |
Drinking Water Violations (140)
This water system has 140 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.060 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.060 mg/L | - | Archived | Dec 31, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | Aug 21, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | Aug 21, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | Aug 21, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | Aug 21, 2025 | - | |
| Feb 11, 2006 | - | Other | No | No | - | - | - | Resolved | Jul 11, 2006 | - | |
| Feb 11, 2006 | - | Other | No | No | - | - | - | Resolved | Jul 11, 2006 | - | |
| Feb 11, 2006 | - | Other | No | No | - | - | - | Resolved | Jul 11, 2006 | - | |
| Feb 11, 2006 | - | Other | No | No | - | - | - | Resolved | Jul 11, 2006 | - | |
| Feb 11, 2006 | - | Other | No | No | - | - | - | Resolved | Jul 11, 2006 | - | |
| Feb 11, 2006 | - | Other | No | No | - | - | - | Resolved | Jul 11, 2006 | - | |
| Feb 11, 2006 | - | Other | No | No | - | - | - | Resolved | Jul 11, 2006 | - | |
| Feb 11, 2006 | - | Other | No | No | - | - | - | Resolved | Jul 11, 2006 | - | |
| Jul 1, 2004 | - | Other | No | No | - | - | - | Resolved | Oct 21, 2004 | - | |
| Jul 1, 2004 | - | Other | No | No | - | - | - | Resolved | Oct 21, 2004 | - | |
| Jul 1, 2004 | - | Other | No | No | - | - | - | Resolved | Oct 21, 2004 | - | |
| Jul 1, 2004 | - | Other | No | No | - | - | - | Resolved | Oct 21, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 1999 | Jan 31, 1999 | MR | No | No | - | 5% of samples | - | Archived | Jan 31, 1999 | - | |
| Jan 1, 1999 | Jan 31, 1999 | MR | No | No | - | 5% of samples | - | Archived | Jan 31, 1999 | - | |
| Dec 1, 1998 | Dec 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Dec 31, 1998 | - | |
| Dec 1, 1998 | Dec 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Dec 31, 1998 | - | |
| Dec 1, 1998 | Dec 31, 1998 | MR | No | No | - | 5% of samples | - | Archived | Dec 31, 1998 | - | |
| Dec 1, 1998 | Dec 31, 1998 | MR | No | No | - | 5% of samples | - | Archived | Dec 31, 1998 | - | |
| Nov 1, 1998 | Nov 30, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Nov 30, 1998 | - | |
| Nov 1, 1998 | Nov 30, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Nov 30, 1998 | - | |
| Nov 1, 1998 | Nov 30, 1998 | MR | No | No | - | 5% of samples | - | Archived | Nov 30, 1998 | - | |
| Nov 1, 1998 | Nov 30, 1998 | MR | No | No | - | 5% of samples | - | Archived | Nov 30, 1998 | - | |
| Oct 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Oct 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Oct 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Oct 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jul 1, 1992 | Sep 30, 1992 | MR | No | Yes | - | 10 mg/L | - | Resolved | Sep 30, 1992 | - | |
| Jul 1, 1992 | Sep 30, 1992 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Sep 30, 1992 | - | |
| Jul 1, 1992 | Sep 30, 1992 | MR | No | Yes | - | 0.7 mg/L | - | Resolved | Sep 30, 1992 | - | |
| Jul 1, 1992 | Sep 30, 1992 | MR | No | Yes | - | 0.7 mg/L | - | Resolved | Sep 30, 1992 | - | |
| Jul 1, 1992 | Sep 30, 1992 | MR | No | Yes | - | 0.7 mg/L | - | Resolved | Sep 30, 1992 | - | |
| Jul 1, 1992 | Sep 30, 1992 | MR | No | Yes | - | 0.7 mg/L | - | Resolved | Sep 30, 1992 | - | |
| Jul 1, 1992 | Sep 30, 1992 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Sep 30, 1992 | - | |
| Jul 1, 1992 | Sep 30, 1992 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Sep 30, 1992 | - | |
| Jul 1, 1992 | Sep 30, 1992 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Sep 30, 1992 | - | |
| Jul 1, 1992 | Sep 30, 1992 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Sep 30, 1992 | - | |
| Jul 1, 1992 | Sep 30, 1992 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Sep 30, 1992 | - | |
| Jul 1, 1992 | Sep 30, 1992 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Sep 30, 1992 | - | |
| Jul 1, 1992 | Sep 30, 1992 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Sep 30, 1992 | - | |
| Jul 1, 1992 | Sep 30, 1992 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Sep 30, 1992 | - |
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.