Swat a mosquito and save it for us
If you are a Contra Costa County resident and are being bitten by mosquitoes, you can contact the District at 925-685-9301 or visit us online to request a free inspection.
We need residents to collect a sample for our inspectors. Contra Costa County is home to 23 different kinds of mosquitoes. Each species has a flight range of between 100 yards to 20 miles, as well as a preferred water habitat. Identifying the species of mosquitoes helps to identify their sources and is key to controlling them.