May 19, 2022: Requesting service via telephone is currently unavailable.

Click here to request service via our website.

 

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

 

  • Image 1
  • Image 2
  • Image 3
  • Image 4
  • Image 5

Board Agendas and Minutes

View Current Board Meeting Agenda | View Agendas/Minutes
Sign Up to receive Board of Trustees Meeting Agendas

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

Sign Up for Online Newsletter, Adult Mosquito Control Notifications, and News Releases.
NEW: First Bird of 2022 Tests Positive for WNV | 95 Years of Protecting Public Health | Mosquitofish Service Changes
 

Frequently Asked Questions

Get all the answers to our most frequently asked questions.
View our FAQ

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.
Learn More

In a Minute Videos

These videos highlight our efforts regarding inspection and control efforts of the insects and animals our District provides services for.
View Videos