Delavan Lake Sanitary District

02/18/2026

12/23/2024

08/07/2024

Bryozoans in Delavan Lake are a sign of good water quality. For more information click on the article below. Freshwater Bryozoan |

Home & Garden Information Center
https://hgic.clemson.edu/factsheet/freshwater-bryozoan/

05/16/2024

Please join Walworth County Lake Association (WCLA) and Walworth County Health and Human Services (HHS) in promoting water safety Friday 5/17.

04/03/2024

RUNOFF EVENT

With the excessive runoff we are currently experiencing, there may be more debris being flushed into the lake. Please keep trash and debris cleared from yards and ditches to help keep our lake as clean as possible. Thank you!

04/03/2024

THE EARLY PELICAN RETURN

Due to the early warm up this year, the pelicans visited Delavan Lake earlier than normal. After a long migration and the sudden drop in temperatures we've experienced this year, it is possible you may see a deceased pelican or two around the lake. This is completely natural and not an indicator of water quality on the lake. If you see a deceased pelican, please do not attempt to retrieve it as they can carry various diseases. Please notify the Sanitary District of its location and we will take care of the disposal as soon as possible.

01/30/2024

90" MOWER ATTACHMENT FOR SALE

01/29/2024

FOR SALE - 2004 JOHN DEERE X475

07/24/2023

RELEASE OF WILD CELERY

Wild Celery is releasing early this year from the bottom of the lake to repopulate to different areas of the lake. If you look, some of the plants still have their roots attached. They always end up on the wind driven side of the lake. The early release is due to the low lake level and above average water temperatures which is caused by the lower water level. Typically Wild Celery will release each year toward the end of August.

03/16/2023

NOTICE OF APPLICATION FOR AQUATIC PLANT MANAGEMENT PERMIT

The Delavan Lake Sanitary District intends to apply for permits from the Wisconsin Department of Natural Resources to treat approximately 165 acres of Delavan Lake with aquatic pesticides to control algae and/or aquatic plants. The proposed treatments would occur between April 15 and November 15, 2023.

The Sanitary District will conduct a public information meeting on the proposed treatment if five or more individuals, organizations, special units of government or local units of government request one. The meeting would give citizens a chance to learn more about the proposed treatment from the permit application. The Delavan Lake Sanitary District is not required to, but may, change the proposed treatment based upon information provided by citizens attending the meeting.

Any request for a public meeting on this proposed treatment must be made within five (5) days after this notice is published. The request must specify the topics to be discussed at the meeting, including problems and alternatives, and must be sent in writing to the Delavan Lake Sanitary District, 2990 South County Road F, Delavan, WI 53115 and to the Wisconsin Department of Natural Resources, Waukesha Service Center, 151 NW Barstow Street, Room 180, Waukesha, WI 53188.

This notice is required by Chapter NR 107, Wisconsin Administrative Code.