OCONOMOWOC WATERWORKS
Wisconsin - Community Water System - PWSID: WI2680227
System Information
| PWSID | WI2680227 |
| System Name | OCONOMOWOC WATERWORKS |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 28, 1981 |
| Last Reported | Mar 2, 2026 |
Location & Contact
| State | Wisconsin |
| City | Oconomowoc |
| ZIP Code | 53066 |
| Address | 808 S WORTHINGTON ST |
| Organization | OCONOMOWOC CITY OF |
| Phone | - |
Population & Service
| Population Served | 15,805 |
| Service Connections | 1 |
Drinking Water Violations (26)
This water system has 26 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2014 | Dec 31, 2014 | MR | No | No | - | 0.060 mg/L | - | Resolved | Dec 31, 2014 | - | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | No | - | 0.060 mg/L | - | Resolved | Dec 31, 2014 | - | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | No | - | 0.060 mg/L | - | Resolved | Dec 31, 2014 | - | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | No | - | 0.060 mg/L | - | Resolved | Dec 31, 2014 | - | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | No | - | 0.060 mg/L | - | Resolved | Dec 31, 2014 | - | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | No | - | 0.080 mg/L | - | Resolved | Dec 31, 2014 | - | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | No | - | 0.080 mg/L | - | Resolved | Dec 31, 2014 | - | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | No | - | 0.080 mg/L | - | Resolved | Dec 31, 2014 | - | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | No | - | 0.080 mg/L | - | Resolved | Dec 31, 2014 | - | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | No | - | 0.080 mg/L | - | Resolved | Dec 31, 2014 | - | |
| Jul 1, 2007 | - | Other | No | No | - | - | - | Resolved | Jul 31, 2007 | - | |
| Jul 1, 2007 | - | Other | No | No | - | - | - | Resolved | Jul 31, 2007 | - | |
| Jul 1, 2007 | - | Other | No | No | - | - | - | Resolved | Jul 31, 2007 | - | |
| Apr 1, 2006 | - | Other | No | No | - | - | - | Resolved | Feb 22, 2011 | - | |
| Jan 1, 2005 | Dec 31, 2005 | MR | No | No | - | TT | - | Resolved | Dec 31, 2005 | - | |
| Jan 1, 2005 | Dec 31, 2005 | MR | No | No | - | TT | - | Resolved | Dec 31, 2005 | - | |
| Nov 1, 2001 | Nov 30, 2001 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 26, 2001 | - | |
| Nov 1, 2001 | Nov 30, 2001 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 26, 2001 | - | |
| Jul 1, 1996 | Jul 31, 1996 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 1996 | - | |
| Jul 1, 1996 | Jul 31, 1996 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 1996 | - | |
| Sep 1, 1995 | Sep 30, 1995 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 1995 | - | |
| Sep 1, 1995 | Sep 30, 1995 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 1995 | - | |
| Sep 1, 1995 | Sep 30, 1995 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 1995 | - | |
| Sep 1, 1995 | Sep 30, 1995 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 1995 | - | |
| Jul 1, 1992 | Dec 31, 1992 | MR | No | No | - | TT | - | Resolved | Dec 31, 1992 | - | |
| Jul 1, 1992 | Dec 31, 1992 | MR | No | No | - | TT | - | Resolved | Dec 31, 1992 | - |
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.