MILL VALLEY SCHOOL
Wisconsin - Non-Transient Non-Community - PWSID: WI2680812
System Information
| PWSID | WI2680812 |
| System Name | MILL VALLEY SCHOOL |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 05 |
| Serves School | Yes |
| Wholesaler | No |
| First Reported | Jan 28, 1981 |
| Last Reported | Mar 2, 2026 |
Location & Contact
| State | Wisconsin |
| City | MUSKEGO |
| ZIP Code | 53150 |
| Address | S87 W18763 WOODS RD |
| Organization | JOHNSON, JEREMIAH - BLDG & GRDS SUPERVISOR |
| Phone | - |
Population & Service
| Population Served | 426 |
| Service Connections | 1 |
Drinking Water Violations (25)
This water system has 25 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2018 | - | Other | No | No | - | - | - | Resolved | Dec 5, 2019 | - | |
| Oct 1, 2018 | - | Other | No | No | - | - | - | Resolved | Dec 5, 2019 | - | |
| Jul 1, 2018 | Sep 30, 2018 | MON | No | Yes | - | - | - | Resolved | Sep 30, 2018 | - | |
| Jul 1, 2018 | Sep 30, 2018 | MON | No | Yes | - | - | - | Resolved | Sep 30, 2018 | - | |
| Jul 1, 2018 | Sep 30, 2018 | MON | No | Yes | - | - | - | Resolved | Sep 30, 2018 | - | |
| Jul 1, 2018 | Sep 30, 2018 | MON | No | Yes | - | - | - | Resolved | Sep 30, 2018 | - | |
| Aug 1, 2012 | Aug 31, 2012 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2012 | - | |
| Aug 1, 2012 | Aug 31, 2012 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2012 | - | |
| Aug 1, 2012 | Aug 31, 2012 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2012 | - | |
| Aug 1, 2012 | Aug 31, 2012 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2012 | - | |
| Aug 1, 2012 | Aug 31, 2012 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2012 | - | |
| Aug 1, 2012 | Aug 31, 2012 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2012 | - | |
| Oct 1, 2003 | - | Other | No | No | - | - | - | Resolved | Feb 22, 2011 | - | |
| Jul 1, 2003 | Sep 30, 2003 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2003 | - | |
| Jul 1, 2003 | Sep 30, 2003 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2003 | - | |
| Jul 1, 2003 | Sep 30, 2003 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2003 | - | |
| Apr 1, 2003 | - | Other | No | No | - | - | - | Resolved | Feb 22, 2011 | - | |
| Jan 1, 2003 | Mar 31, 2003 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2003 | - | |
| Jan 1, 2003 | Mar 31, 2003 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2003 | - | |
| Jan 1, 2003 | Mar 31, 2003 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2003 | - | |
| Oct 16, 2001 | Dec 31, 2001 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2001 | - | |
| Jul 1, 2001 | Sep 30, 2001 | MR | No | No | - | 5% of samples | - | Resolved | Aug 22, 2001 | - | |
| Apr 1, 1999 | Jun 30, 1999 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 1999 | - | |
| Jan 1, 1999 | Mar 31, 1999 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 1999 | - | |
| - | - | - | No | No | - | - | - | - | - | - |
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.