MCDONALDS VERNON
Wisconsin — Non-Transient Non-Community — PWSID: WI2682450
System Information
| PWSID | WI2682450 |
| System Name | MCDONALDS VERNON |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Aug 30, 1989 |
| Last Reported | Dec 17, 2025 |
Location & Contact
| State | Wisconsin |
| City | WAUKESHA |
| ZIP Code | 53189 |
| Address | W225S4885 GUTHRIE RD |
| Organization | CONN, DION |
| Phone | — |
Population & Service
| Population Served | 1,250 |
| Service Connections | 1 |
Drinking Water Violations (68)
This water system has 68 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mar 1, 2019 | Mar 31, 2019 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Mar 31, 2019 | Revised Total Coliform Rule |
| Mar 1, 2019 | Mar 31, 2019 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Mar 31, 2019 | Revised Total Coliform Rule |
| Mar 1, 2019 | Mar 31, 2019 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Mar 31, 2019 | Revised Total Coliform Rule |
| Mar 1, 2019 | Mar 31, 2019 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Mar 31, 2019 | Revised Total Coliform Rule |
| Feb 1, 2018 | Feb 28, 2018 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Feb 28, 2018 | Revised Total Coliform Rule |
| Feb 1, 2018 | Feb 28, 2018 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Feb 28, 2018 | Revised Total Coliform Rule |
| Feb 1, 2018 | Feb 28, 2018 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Feb 28, 2018 | Revised Total Coliform Rule |
| Feb 1, 2018 | Feb 28, 2018 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Feb 28, 2018 | Revised Total Coliform Rule |
| Apr 1, 2014 | Apr 30, 2014 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 21, 2014 | Total Coliform Rule |
| Apr 1, 2014 | Apr 30, 2014 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 21, 2014 | Total Coliform Rule |
| Apr 1, 2014 | Apr 30, 2014 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 21, 2014 | Total Coliform Rule |
| Apr 1, 2014 | Apr 30, 2014 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 21, 2014 | Total Coliform Rule |
| Apr 1, 2014 | Apr 30, 2014 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 21, 2014 | Total Coliform Rule |
| Nov 1, 2013 | Nov 30, 2013 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2013 | Total Coliform Rule |
| Nov 1, 2013 | Nov 30, 2013 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2013 | Total Coliform Rule |
| Nov 1, 2013 | Nov 30, 2013 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2013 | Total Coliform Rule |
| Nov 1, 2013 | Nov 30, 2013 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2013 | Total Coliform Rule |
| Nov 1, 2013 | Nov 30, 2013 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2013 | Total Coliform Rule |
| Oct 1, 2013 | Oct 31, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 23, 2013 | Total Coliform Rule |
| Oct 1, 2013 | Oct 31, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 23, 2013 | Total Coliform Rule |
| Oct 1, 2013 | Oct 31, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 23, 2013 | Total Coliform Rule |
| Oct 1, 2013 | Oct 31, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 23, 2013 | Total Coliform Rule |
| Oct 1, 2013 | Oct 31, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 23, 2013 | Total Coliform Rule |
| Dec 1, 2011 | — | Public Notice | Other | No | No | — | — | — | Unaddressed | — | Public Notice Rule and Revised PN Rule |
| Nov 1, 2011 | Nov 30, 2011 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2011 | Total Coliform Rule |
| Sep 1, 2009 | Sep 30, 2009 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 29, 2009 | Total Coliform Rule |
| Sep 1, 2009 | Sep 30, 2009 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 29, 2009 | Total Coliform Rule |
| Sep 1, 2009 | Sep 30, 2009 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 29, 2009 | Total Coliform Rule |
| Sep 1, 2009 | Sep 30, 2009 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 29, 2009 | Total Coliform Rule |
| Sep 1, 2009 | Sep 30, 2009 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 29, 2009 | Total Coliform Rule |
| Sep 1, 2009 | Sep 30, 2009 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 29, 2009 | Total Coliform Rule |
| Sep 1, 2009 | Sep 30, 2009 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 29, 2009 | Total Coliform Rule |
| Sep 1, 2009 | Sep 30, 2009 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 29, 2009 | Total Coliform Rule |
| Sep 1, 2009 | Sep 30, 2009 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 29, 2009 | Total Coliform Rule |
| Mar 1, 2007 | — | Public Notice | Other | No | No | — | — | — | Resolved | Feb 22, 2011 | Public Notice Rule and Revised PN Rule |
| Feb 1, 2007 | Feb 28, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Feb 28, 2007 | Total Coliform Rule |
| Feb 1, 2007 | Feb 28, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Feb 28, 2007 | Total Coliform Rule |
| Feb 1, 2007 | Feb 28, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Feb 28, 2007 | Total Coliform Rule |
| Jun 1, 2006 | — | Public Notice | Other | No | No | — | — | — | Resolved | Feb 22, 2011 | Public Notice Rule and Revised PN 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 |
| Oct 1, 2003 | — | Public Notice | Other | No | No | — | — | — | Resolved | Feb 22, 2011 | Public Notice Rule and Revised PN Rule |
| Jan 1, 2003 | Dec 31, 2003 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2003 | Nitrate Rule |
| Jan 1, 2003 | Dec 31, 2003 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2003 | Nitrate Rule |
| Jan 1, 2003 | Dec 31, 2003 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2003 | Nitrate Rule |
| Jun 1, 2001 | Jun 30, 2001 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 19, 2001 | Total Coliform Rule |
| Jun 1, 2001 | Jun 30, 2001 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 19, 2001 | Total Coliform Rule |
| Jun 1, 2001 | Jun 30, 2001 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 19, 2001 | Total Coliform Rule |
| Jun 1, 2001 | Jun 30, 2001 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 19, 2001 | Total Coliform 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.