Delavan Lake Sanitary District Launches a New Website! Subscribe Today! - January 03, 2019

Delavan Lake Sanitary District is proud to announce the launch of our new website. Subscribe... [more...]


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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Geneva Lake Conservancy is partering with the Geneva Lake Environmental Agency and will be offering seminars for all lakefront property owners and homeowners associations, farmers and citizens concerned about phosphorus runoff in Walworth County.  Thro...

Just a friendly reminder - Delavan Lake Sanitary District Board Meetings are held monthly! The public is always welcome!

Recent News

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Aquatic Plant Harvesting to begin 5/20/19

(5/20/2019) We plan to launch our harvesting equipment the week of May 20th and begin the initial harvesting of plants in the access channels at that time per DNR regulations.  After June 15th we will harvest all areas of the lake as conditions warrant.

Rescheduled Herbicide and Algaecide Treatment for week of 5/27/19 - weather permitting

(5/20/2019) We have again been granted a permit from the Department of Natural Resources for chemical treatments on Delavan Lake.  A copy of the permit is available by contacting the District office and on the Aquatic Plant Harvesting page of this website. Chemic...

Rate Increase

(1/1/2019) The user charges in 2019 will increase $2.00 per month to $40.00 per month per residential unit in an effort to cover rising WalCoMet treatment costs and the adjustments to our capital replacement budget.