News and Announcements
Mosquito Season Update - September 30th, 2026
Although cooling temperatures are slowing mosquito activity, the number of mosquitoes is well above average for this time of year.
A large amount of standing water has been produced following heavy rains over the last few weeks, with a large hatching of floodwater mosquitoes. Mosquito control operations generally are winding down this time of year, although we are still conducting operations at levels similar to peak summer.
A large number of biting floodwater mosquitoes are going to be found in wooded areas over the next few weeks, and likely awaiting warm days to spill over into populated areas. Although these are not known to spread disease, they are very aggressive and active during the day.
Though West Nile Virus risk usually goes to near zero by October, transmission remains elevated due to a high population of the type of mosquitoes that carry it. These are the "quiet biters" that are generally active around dusk.
Additionally, invasive Asian Tiger Mosquito activity will continue until it is too cold for the eggs to hatch, usually around first frost. Beyond routine mosquito control operations, additional community effort is important to eliminate these mosquitoes.
As is the case with West Nile Virus carrying mosquitoes, the Asian Tiger Mosquitoes breed in standing water that can be found around the yard, and do not fly far from the water they come from. Please check around for any standing water. Dump, then store upside down or dispose of anything that can hold water, clean gutters that could be holding water, change bird bath water, cover rain barrels, and report anything too large to manage for inspection and treatment.
We also will accept up to 4 unrimmed tires from residents for disposal if brought to our Lyons location. When used according to the label, insect repellent containing DEET is very effective at preventing bites and the use of fans during outdoor activities can make it difficult for mosquitoes to fly or land.
For any general inquiries or to report standing water, please contact us!
District Documents
Click here for District documents, including weekly reports, annual reports, board meeting minutes, etc.Adult Mosquito Control Operations
There are no adult mosquito control operations scheduled at this time. (9/16)
Follow our Facebook page or check back regularly for updates to our operations.
Adult mosquito control operations are scheduled only when mosquitoes are detected to be involved in elevated levels of a disease transmission cycle. In order to help fight against mosquitoes in your neighborhood, please check out our page on at-home prevention.
Click here for more information on the District's adult control operations.