PLAINFIELD
Illinois - Community Water System - PWSID: IL1970800
System Information
| PWSID | IL1970800 |
| System Name | PLAINFIELD |
| 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 | PLAINFIELD |
| ZIP Code | 60544 |
| Address | 14400 Coil Plus Dr |
| Organization | THREEWITT, SCOTT R |
| Phone | 815-436-3577 |
Population & Service
| Population Served | 50,000 |
| Service Connections | 15,894 |
Drinking Water Violations (183)
This water system has 183 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 | - | - | - | Resolved | Oct 7, 2025 | - | |
| Jul 1, 2025 | - | Other | No | No | - | - | - | Resolved | Oct 7, 2025 | - | |
| Jan 13, 2022 | - | MR | No | No | - | TT | - | Resolved | Mar 30, 2022 | - | |
| Jan 13, 2022 | - | MR | No | No | - | TT | - | Resolved | Mar 30, 2022 | - | |
| Jul 1, 2017 | - | Other | No | No | - | - | - | Resolved | Jun 14, 2018 | - | |
| Jul 1, 2017 | - | Other | No | No | - | - | - | Resolved | Jun 14, 2018 | - | |
| Jul 1, 2014 | Jul 31, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2014 | - | |
| Jul 1, 2014 | Jul 31, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2014 | - | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | No | - | 4.0 mg/L | - | Resolved | Aug 29, 2014 | - | |
| Jul 1, 2014 | Jul 31, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2014 | - | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | No | - | 4.0 mg/L | - | Resolved | Aug 29, 2014 | - | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | No | - | 4.0 mg/L | - | Resolved | Aug 29, 2014 | - | |
| Jul 1, 2014 | Jul 31, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2014 | - | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | No | - | 4.0 mg/L | - | Resolved | Aug 29, 2014 | - | |
| Jul 1, 2011 | - | Other | No | No | - | - | - | Resolved | Dec 2, 2011 | - | |
| Jul 1, 2011 | - | Other | No | No | - | - | - | Resolved | Dec 2, 2011 | - | |
| Jan 2, 2010 | - | MR | No | No | - | TT | - | Resolved | Jan 25, 2010 | - | |
| Jan 2, 2010 | - | MR | No | No | - | TT | - | Resolved | Jan 25, 2010 | - | |
| Jan 1, 2009 | Jan 31, 2009 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2009 | - | |
| Jan 1, 2009 | Jan 31, 2009 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2009 | - | |
| Jan 1, 2009 | Jan 31, 2009 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2009 | - | |
| Jan 1, 2009 | Jan 31, 2009 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2009 | - | |
| Feb 28, 2007 | - | Other | No | No | - | - | - | Resolved | Apr 2, 2007 | - | |
| Feb 28, 2007 | - | Other | No | No | - | - | - | Resolved | Apr 2, 2007 | - | |
| Feb 28, 2007 | - | Other | No | No | - | - | - | Resolved | Apr 2, 2007 | - | |
| Feb 28, 2007 | - | Other | No | No | - | - | - | Resolved | Apr 2, 2007 | - | |
| Sep 1, 2006 | Sep 30, 2006 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2006 | - | |
| Sep 1, 2006 | Sep 30, 2006 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2006 | - | |
| Sep 1, 2006 | Sep 30, 2006 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2006 | - | |
| Sep 1, 2006 | Sep 30, 2006 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2006 | - | |
| Jan 1, 2006 | Jan 31, 2006 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2006 | - | |
| Jan 1, 2006 | Jan 31, 2006 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2006 | - | |
| Jan 1, 2006 | Jan 31, 2006 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2006 | - | |
| Jan 1, 2006 | Jan 31, 2006 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2006 | - | |
| Jan 1, 2004 | Mar 31, 2004 | MCL | Yes | No | 15.6 | 5 pCi/L | - | Resolved | Mar 31, 2004 | - | |
| Jan 1, 2004 | Mar 31, 2004 | MCL | Yes | No | 15.6 | 5 pCi/L | - | Resolved | Mar 31, 2004 | - | |
| Jan 1, 2004 | Mar 31, 2004 | MCL | Yes | No | 15.6 | 5 pCi/L | - | Resolved | Mar 31, 2004 | - | |
| Jan 1, 2004 | Mar 31, 2004 | MCL | Yes | No | 15.6 | 5 pCi/L | - | Resolved | Mar 31, 2004 | - | |
| Jan 1, 2004 | Mar 31, 2004 | MCL | Yes | No | 15.6 | 5 pCi/L | - | Resolved | Mar 31, 2004 | - | |
| Jan 1, 2004 | Mar 31, 2004 | MCL | Yes | No | 15.6 | 5 pCi/L | - | Resolved | Mar 31, 2004 | - | |
| Oct 1, 2003 | Dec 31, 2003 | MCL | Yes | No | 12.1 | 5 pCi/L | - | Resolved | Dec 31, 2003 | - | |
| Oct 1, 2003 | Dec 31, 2003 | MCL | Yes | No | 12.1 | 5 pCi/L | - | Resolved | Dec 31, 2003 | - | |
| Oct 1, 2003 | Dec 31, 2003 | MCL | Yes | No | 12.1 | 5 pCi/L | - | Resolved | Dec 31, 2003 | - | |
| Oct 1, 2003 | Dec 31, 2003 | MCL | Yes | No | 12.1 | 5 pCi/L | - | Resolved | Dec 31, 2003 | - | |
| Oct 1, 2003 | Dec 31, 2003 | MCL | Yes | No | 12.1 | 5 pCi/L | - | Resolved | Dec 31, 2003 | - | |
| Oct 1, 2003 | Dec 31, 2003 | MCL | Yes | No | 12.1 | 5 pCi/L | - | Resolved | Dec 31, 2003 | - | |
| Jul 1, 2003 | Sep 30, 2003 | MCL | Yes | No | 10 | 5 pCi/L | - | Resolved | Sep 30, 2003 | - | |
| Jul 1, 2003 | Sep 30, 2003 | MCL | Yes | No | 10 | 5 pCi/L | - | Resolved | Sep 30, 2003 | - | |
| Jul 1, 2003 | Sep 30, 2003 | MCL | Yes | No | 10 | 5 pCi/L | - | Resolved | Sep 30, 2003 | - | |
| Jul 1, 2003 | Sep 30, 2003 | MCL | Yes | No | 10 | 5 pCi/L | - | Resolved | Sep 30, 2003 | - |
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.