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Santa Clara County is home to at least 19 species of mosquitoes. Mosquitoes are capable of transmitting diseases such as West Nile virus, Dengue Fever and Malaria.

The District’s battle against mosquitoes focuses primary on the use of environmentally friendly approaches to eliminate mosquitoes before they begin biting people and animals.

This approach starts with identifying the source of problem mosquitoes. Many residents are unaware that they may be raising mosquitoes in their backyard. Backyard breeding sources such as stagnant water in plastic pools, buckets, old tires, etc., are identified and eliminated or removed. 

For sources such as ponds and marshes, the District uses environmentally sensitive methods such as mosquito fish or bio-rational products that specifically target the mosquito larvae or pupae before they emerge as adults.

The District routinely conducts disease surveillance for mosquito-borne diseases such as encephalitis and West Nile virus.

To learn more about mosquitoes and what you can do to prevent them, download our brochures "Are You Raising Mosquitoes?" and "Mosquitoes" in English and other languages.


Legal abatement
Typical abatement procedures are used to gain access to properties to eliminate the source of a mosquito problem (e.g. a neglected swimming pool in the backyard). Local Vector Control Districts prefer to work with landowners and will make every effort to provide help and assistance.
However, if a landowner is unwilling or unable to eliminate a mosquito source (or other nuisance), local districts have the authority to access private property to inspect and abate the source of a problem. They also have the authority to charge a landowner a fee, and place liens upon property (Sections 2053, 2060-2067, and 2855 of the California Health and Safety Code​).

Report any breeding sources personally or anonymously at SCCvector/service​ or calling at (408) 918-4770. 


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Last updated: 8/5/2020 8:34 AM