MUKWONAGO, WI · Waukesha County
MUKWONAGO WATERWORKS Water System
Current status
1 item on record is open and awaiting resolution as of July 4, 2026. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings. Full details are in the violation history below.
This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Wisconsin’s official records. Always confirm current status with Wisconsin before making decisions based on this information.
System facts
- System ID (PWSID)
- WI2680209
- System type
- Community Water System
- Population served
- 8,190
- Service connections
- 3,033
- Ownership
- local government
- Water source
- groundwater (wells)
Violation history
Monitoring and Reporting (DBP)
—Chlorine
October 1, 2015 – November 13, 2015
ResolvedPublic Notification Violation for NPDWR Violation
—Public Notice
October 1, 2011
UnaddressedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2010 – July 16, 2010
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2008 – July 11, 2008
ResolvedMonitoring, Regular
—cis-1,2-Dichloroethylene
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—Vinyl chloride
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—1,2-Dichloroethane
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—trans-1,2-Dichloroethylene
January 1, 2003 – December 31, 2003
ResolvedMaximum Contaminant Level Violation, Average
Health-basedCombined Radium (-226 and -228)
May 25, 1984 – May 24, 1988
Archived
Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yetArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| October 1, 2015 – November 13, 2015 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| October 1, 2011 | Public Notification Violation for NPDWR Violation | Public Notice | — | Unaddressed |
| July 1, 2010 – July 16, 2010 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| July 1, 2008 – July 11, 2008 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | cis-1,2-Dichloroethylene | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | Vinyl chloride | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | 1,2-Dichloroethane | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | trans-1,2-Dichloroethylene | — | Resolved |
| May 25, 1984 – May 24, 1988 | Maximum Contaminant Level Violation, Average | Combined Radium (-226 and -228) | Health-based | Archived |
Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yetArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- June 30, 2005State Public Notification received16 linked violations
- June 30, 2005State Public Notification issued11 linked violations
- July 8, 2004State Public Notification issued16 linked violations
Contact
DYKSTRA, DIANA - VILLAGE CLERK
Phone not on record
MUKWONAGO, WI 53149