No longer Available: In-Person Mosquitofish Pick Up. Contra Costa county residents can request mosquitofish by clicking here.

 

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Board Agendas and Minutes

View Current Board Meeting Agenda | View Agendas/Minutes
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Current Virus Activity

Learn more about the current West Nile virus activity in Contra Costa County.
Current Adult Mosquito Control Info |2022 Virus Activity To Date| Receive Notifications

News and Current Events

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NEW: First Invasive Aedes Mosquitoes Found in Contra Costa County | Mosquitofish Service Changes
 

Frequently Asked Questions

Get all the answers to our most frequently asked questions.
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Invasive Mosquito Species of California

One of the two species that can transmit Zika, dengue, yellow fever, and chikungunya, was found in Contra Costa County in August, 2022.
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95 Years of Protecting Public Health

The District is celebrating a milestone as a public health agency.
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