District Office Hours: 8 a.m. to 4:30 p.m. Monday through Friday

Our county’s diverse ecological regions create a range of mosquito sources. The District regularly surveys more than 10,000 acres of marshland along…

For questions and answers regarding mosquito control, please click here. 

The Board of Trustees are officials appointed by their respective city councils or the Contra Costa County Board of Supervisors to govern the Mosquito…