No longer Available: In-Person Mosquitofish Pick Up. Contra Costa county residents can request mosquitofish by
Board Agendas and Minutes
View Current Board Meeting Agenda
to receive Board of Trustees Meeting Agendas
Current Virus Activity
Learn more about the current West Nile virus activity in Contra Costa County.
Mosquito Control Info
2021 Virus Activity To Date
News and Current Events
for Online Newsletter, Adult Mosquito Control Notifications, and News Releases.
Why a Change in Seasons Can Increase the Risk of Rats and Mice
Frequently Asked Questions
Get all the answers to our most frequently asked questions.
Invasive Mosquito Species of California
While not currently in Contra Costa County, two invasive species that can transmit Zika, dengue, yellow fever, and chikungunya are in other parts of the state.
In a Minute Videos
These videos take you right to the action as we control the insects and animals capable of transmitting disease/causing harm.
Even During a Pandemic - We Are Here For You