THE WILLOWS UTILITY COMPANY
Missouri — Community Water System — PWSID: MO5048099
System Information
| PWSID | MO5048099 |
| System Name | THE WILLOWS UTILITY COMPANY |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 07 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 7, 1980 |
| Last Reported | Dec 31, 2025 |
Location & Contact
| State | Missouri |
| City | DES PERES |
| ZIP Code | 63131-0000 |
| Address | 1630 DES PERES RD STE 140 |
| Organization | SASSEN, ISABEL |
| Phone | 314-464-3964 |
Population & Service
| Population Served | 315 |
| Service Connections | 142 |
Drinking Water Violations (40)
This water system has 40 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, 2016 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Sep 21, 2017 | Consumer Confidence Rule |
| May 8, 2015 | — | Groundwater Rule | Other | No | No | — | — | — | Resolved | Jul 20, 2015 | Ground Water Rule |
| Jul 21, 2014 | — | Groundwater Rule | Other | No | No | — | — | — | Resolved | Oct 6, 2014 | Ground Water Rule |
| Jul 21, 2014 | — | Groundwater Rule | Other | No | No | — | — | — | Resolved | Oct 6, 2014 | Ground Water Rule |
| Apr 1, 2013 | Apr 30, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 2013 | Total Coliform Rule |
| Apr 1, 2013 | Apr 30, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 2013 | Total Coliform Rule |
| Apr 1, 2013 | Apr 30, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 2013 | Total Coliform Rule |
| Apr 1, 2013 | Apr 30, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 2013 | Total Coliform Rule |
| Jul 1, 2009 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 26, 2012 | Consumer Confidence Rule |
| Oct 1, 2006 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Aug 21, 2008 | Lead and Copper Rule |
| Jul 1, 2006 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jun 25, 2007 | Consumer Confidence Rule |
| May 1, 2006 | May 31, 2006 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2006 | Total Coliform Rule |
| May 1, 2006 | May 31, 2006 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2006 | Total Coliform Rule |
| May 1, 2006 | May 31, 2006 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2006 | Total Coliform Rule |
| Apr 1, 2006 | Apr 30, 2006 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2006 | Total Coliform Rule |
| Apr 1, 2006 | Apr 30, 2006 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2006 | Total Coliform Rule |
| Apr 1, 2006 | Apr 30, 2006 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2006 | Total Coliform Rule |
| Oct 1, 2005 | Oct 31, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2005 | Total Coliform Rule |
| Oct 1, 2005 | Oct 31, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2005 | Total Coliform Rule |
| Oct 1, 2005 | Oct 31, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2005 | Total Coliform Rule |
| Jul 1, 2005 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jun 25, 2007 | Consumer Confidence Rule |
| Jul 1, 2004 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jun 25, 2007 | Consumer Confidence Rule |
| Jul 1, 2003 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jun 25, 2007 | Consumer Confidence Rule |
| Jul 1, 2002 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jun 25, 2007 | Consumer Confidence Rule |
| Mar 1, 2000 | Mar 31, 2000 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2000 | Total Coliform Rule |
| Nov 1, 1997 | Nov 30, 1997 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 1997 | Total Coliform Rule |
| Oct 1, 1997 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 6, 2004 | Lead and Copper Rule |
| Oct 1, 1997 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 6, 2004 | Lead and Copper Rule |
| Oct 1, 1997 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 6, 2004 | Lead and Copper Rule |
| Apr 1, 1997 | Apr 30, 1997 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 1997 | Total Coliform Rule |
| Jul 1, 1996 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 6, 2004 | Lead and Copper Rule |
| Jul 1, 1996 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 6, 2004 | Lead and Copper Rule |
| Jul 1, 1996 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 6, 2004 | Lead and Copper Rule |
| Jul 1, 1996 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 6, 2004 | Lead and Copper Rule |
| Feb 1, 1996 | Feb 29, 1996 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Feb 29, 1996 | Total Coliform Rule |
| Feb 1, 1996 | Feb 29, 1996 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Feb 29, 1996 | Total Coliform Rule |
| Feb 1, 1996 | Feb 29, 1996 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Feb 29, 1996 | Total Coliform Rule |
| Feb 1, 1996 | Feb 29, 1996 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Feb 29, 1996 | Total Coliform Rule |
| Jan 1, 1994 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 31, 1995 | Lead and Copper Rule |
| Feb 1, 1993 | Jan 31, 1997 | Gross Alpha, Excl. Radon and U | MR | No | Yes | — | 15 pCi/L | — | Resolved | Jan 31, 1997 | Radionuclides and Revised Rad Rule |
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.