Recent News
The Delavan Lake Sanitary District staff strive to keep you updated on all matters related to your community. If you do not find the information you need, please contact our office and we will gladly assist you! Subscribe today and receive up to the minute News and important Alerts delivered straight to your inbox.
PELICANS
4/3/2024
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. It 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.
RUNOFF EVENT
4/3/2024
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!
Wisconsin Public Radio shares information on blue-green algae
7/28/2023
Click the link below to learn more.
Release of Wild Celery
7/24/2023
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. The released plants 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.
COUNTY HWY O SEWER & FORCE MAIN PROJECT
5/25/2023
Delavan Lake Sanitary's portion of the construction activities is complete.
COLUMNARIS BACTERIAL INFECTION IS CAUSE OF FISH KILL
5/9/2023
It's very common during the spring and early summer to receive phone calls from our Delavan Lake residents alerting us that they have seen a big fish die off. Very often these spring die off events are the result of a Columnaris bacterial infection. Columnaris bacteria thrives in warm temperatures (65 to 70F) and reduced water quality from runoff events which also cause stress in fish. At the same time, the warming temperatures and increase in spawning hormones also cause stress in fish.
NOTICE OF APPLICATION FOR AQUATIC PLANT MANAGEMENT PERMIT
3/7/2023
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.
NEW MESH ON HARVESTER
7/21/2022
New mesh has been installed on harvester #81. The new mesh is designed to do a better job picking up algae and duckweed. Please go to the Delavan Lake Sanitary Facebook page to watch the video of the harvester in action.
Tis the season for Purple Loosestrife - be on the lookout
7/19/2022
Below is a link for more information on control and removal of this invasive species.
FILAMENTOUS GREEN & BLUE-GREEN ALGAE OUTBREAK
6/24/2022
Due to the hot weather this week and calm winds today, areas of the lake are experiencing excessive filamentous green algae and blue-green algae outbreaks. People should avoid these areas when swimming and boating. Small children and dogs should be supervised to ensure they don't risk possible ingestion. Please see the Town of Delavan website for additional information.