Welcome to the City of Lake Mills Wastewater Utility


The City of Lake Mills Wastewater Utility services 8.2 square miles and roughly 5200 residential, commercial, and industrial customers within the City of Lake Mills and the Town of Lake Mills located in South Central Wisconsin.  The current treatment plant was constructed in 1991, and is currently undergoing many new updates to be more effective in alert response, wastewater treatment, cost effectiveness, and environmental friendliness.  Most notably was the chemical upgrade in 2002 for Phosphorus and a 2009 upgrade to the SCADA alarm, plant, and station monitoring system.



The Wastewater Utility currently maintains 42 miles of sanitary sewer as well as 17 lift stations within its service boundary.  Currently the Treatment Plant uses physical, chemical, and biological processes to achieve the strict standards on water quality, as defined by both the Wisconsin DNR and the EPA.  Each month a status report is sent to the WI DNR to alert them of our processes and effectiveness.  Please check out the other sections of our webpage including the explaination of the wastewater treatment process, meet your Utility Crew, and check out Bob's Bugs to learn more about the microscopic life that help us to do what we need to to keep our lake, rivers, and streams clean and clear.  The Lake Mills Wastewater Utility strives to make sure we are doing all we can to Assist Nature.