Delavan Lake Sanitary District....Serving the Residents of the Delavan Lake Area!

The Delavan Lake Sanitary District was created in 1969 to operate and maintain a wastewater collection system serving properties adjacent to and surrounding Delavan Lake. Since 1997 the District has been responsible for the Aquatic Plant Management Program for Delavan Lake as well as various lake monitoring projects and studies in cooperation with Wisconsin DNR and USGS. Since 1995 DLSD has assisted the Town of Delavan in the monitoring lake levels and operation of the Delavan Lake (Borg) Dam facilities.

Upcoming Events

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Regular Monthly Board Meeting Reminder


Just a friendly reminder - Delavan Lake Sanitary District Board Meetings are held monthly! The public is always welcome!  The Regular Monthly Meeting for February will be on February 26, 2020. 

Recent News

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Work will resume on Gill Court starting January 16, 2020 first thing in the morning.


Installation of the force main has commenced.  They will be working through December 20th with a brief break for the Holiday with work potentially to...

DLSD Residents Can Choose To Purchase Service Line Protection


We are pleased to announce a program to further enhance protection to residents.  Service Line Warranties of America (SLWA), a HomeServe Company, a leading provider of home repair solutions, has offered to provide optional repair service plans to our...



The Delavan Lake Sanitary District (DLSD) will be installing a new 12 inch force main within the existing 30-foot-wide easement along the lakefront area to improve needed capacity issues.  The project is estimated to take about 6 to 8 weeks pending weather...