Annual Aquatic Week Treatment on Lake Stevens is scheduled for Wednesday, July 17, 2024. 

Please see below location map showing treatment areas. For a more detailed map on specific treatment locations, visit the project web map: https://www.arcgis.com/home/webmap/viewer.html?webmap=b81ad6718d304561bc06a82abb1ab7ca&extent=-122.1454,47.9769,-122.0219,48.0256 

Signs will be distributed the day before at local beaches and private docks where treatment occurs. There is a 24-hour swimming precaution and 48-hour irrigation precaution on the Lake following the treatment. Please contact SurfaceWater@lakestevenswa.gov with any questions.