YORK TOWNSHIP WATER SYSTEM
Illinois - Community Water System - PWSID: IL0430010
System Information
| PWSID | IL0430010 |
| System Name | YORK TOWNSHIP WATER SYSTEM |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jun 2, 1992 |
| Last Reported | Feb 26, 2026 |
Location & Contact
| State | Illinois |
| City | DARIEN |
| ZIP Code | 60561 |
| Address | 17W440 North Frontage Rd |
| Organization | ADAMS, JONATHAN |
| Phone | 630-964-7503 |
Population & Service
| Population Served | 1,423 |
| Service Connections | 480 |
Drinking Water Violations (172)
This water system has 172 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 | - | - | |
| Oct 1, 2012 | - | MR | No | No | - | TT | - | Resolved | Sep 11, 2013 | - | |
| Oct 1, 2012 | - | MR | No | No | - | TT | - | Resolved | Sep 11, 2013 | - | |
| Oct 1, 2012 | - | MR | No | No | - | TT | - | Resolved | Sep 11, 2013 | - | |
| Oct 1, 2012 | - | MR | No | No | - | TT | - | Resolved | Sep 11, 2013 | - | |
| Oct 2, 2011 | - | MR | No | No | - | TT | - | Resolved | Oct 11, 2011 | - | |
| Oct 2, 2011 | - | MR | No | No | - | TT | - | Resolved | Oct 11, 2011 | - | |
| Apr 2, 2011 | - | MR | No | No | - | TT | - | Resolved | Oct 11, 2011 | - | |
| Jan 1, 2011 | Dec 31, 2011 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2011 | - | |
| Jan 1, 2011 | Dec 31, 2011 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2011 | - | |
| Jan 1, 2011 | Dec 31, 2011 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2011 | - | |
| Jan 1, 2011 | Dec 31, 2011 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2011 | - | |
| Oct 6, 2010 | - | Other | No | No | - | - | - | Resolved | Dec 23, 2010 | - | |
| Oct 6, 2010 | - | Other | No | No | - | - | - | Resolved | Dec 23, 2010 | - | |
| Oct 6, 2010 | - | Other | No | No | - | - | - | Resolved | Dec 23, 2010 | - | |
| Oct 6, 2010 | - | Other | No | No | - | - | - | Resolved | Dec 23, 2010 | - | |
| Aug 22, 2009 | - | TT | Yes | No | - | TT | - | Resolved | Jun 30, 2011 | - | |
| Aug 22, 2009 | - | TT | Yes | No | - | TT | - | Resolved | Jun 30, 2011 | - | |
| Aug 22, 2009 | - | TT | Yes | No | - | TT | - | Resolved | Jun 30, 2011 | - | |
| Aug 22, 2009 | - | TT | Yes | No | - | TT | - | Resolved | Jun 30, 2011 | - | |
| Aug 22, 2009 | - | TT | Yes | No | - | TT | - | Resolved | Jun 30, 2011 | - | |
| Aug 22, 2009 | - | TT | Yes | No | - | TT | - | Resolved | Jun 30, 2011 | - | |
| Jan 19, 2008 | - | Other | No | No | - | - | - | Resolved | Feb 15, 2008 | - | |
| Jan 19, 2008 | - | Other | No | No | - | - | - | Resolved | Feb 15, 2008 | - | |
| Jan 19, 2008 | - | Other | No | No | - | - | - | Resolved | Feb 15, 2008 | - | |
| Jan 19, 2008 | - | Other | No | No | - | - | - | Resolved | Feb 15, 2008 | - | |
| Nov 1, 2007 | Nov 30, 2007 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2007 | - | |
| Nov 1, 2007 | Nov 30, 2007 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2007 | - | |
| Nov 1, 2007 | Nov 30, 2007 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2007 | - | |
| Nov 1, 2007 | Nov 30, 2007 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2007 | - | |
| Feb 1, 2006 | Feb 28, 2006 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 28, 2006 | - | |
| Feb 1, 2006 | Feb 28, 2006 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 28, 2006 | - | |
| Feb 1, 2006 | Feb 28, 2006 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 28, 2006 | - | |
| Feb 1, 2006 | Feb 28, 2006 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 28, 2006 | - | |
| May 1, 2002 | May 31, 2002 | MCL | Yes | No | - | 5% of samples | - | Archived | May 31, 2002 | - | |
| May 1, 2002 | May 31, 2002 | MCL | Yes | No | - | 5% of samples | - | Archived | May 31, 2002 | - | |
| Mar 1, 2000 | Mar 31, 2000 | MR | No | No | - | 5% of samples | - | Archived | Mar 31, 2000 | - | |
| Mar 1, 2000 | Mar 31, 2000 | MR | No | No | - | 5% of samples | - | Archived | Mar 31, 2000 | - | |
| Oct 19, 1999 | - | Other | No | No | - | - | - | Resolved | Jan 31, 2000 | - | |
| Oct 19, 1999 | - | Other | No | No | - | - | - | Resolved | Jan 31, 2000 | - | |
| Oct 19, 1999 | - | Other | No | No | - | - | - | Resolved | Jan 31, 2000 | - | |
| Oct 19, 1999 | - | Other | No | No | - | - | - | Resolved | Jan 31, 2000 | - | |
| Oct 19, 1999 | - | Other | No | No | - | - | - | Resolved | Jan 31, 2000 | - | |
| Sep 1, 1999 | Sep 30, 1999 | MR | No | No | - | 5% of samples | - | Archived | Sep 30, 1999 | - | |
| Sep 1, 1999 | Sep 30, 1999 | MR | No | No | - | 5% of samples | - | Archived | Sep 30, 1999 | - | |
| May 1, 1998 | May 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | May 31, 1998 | - | |
| May 1, 1998 | May 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | May 31, 1998 | - | |
| Jun 1, 1995 | Jun 30, 1995 | MR | No | No | - | 5% of samples | - | Archived | Jun 30, 1995 | - | |
| Jun 1, 1995 | Jun 30, 1995 | MR | No | No | - | 5% of samples | - | Archived | Jun 30, 1995 | - | |
| Oct 1, 1994 | Dec 31, 1994 | MR | No | Yes | - | - | - | Resolved | Dec 31, 1994 | - |
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.