Contact Us:
district@sjmosquito.org
(209) 982-4675 or 1-800-300-4675

Office Hours:
Monday - Friday
7:00 a.m. to 3:30 p.m.

Address:
7759 S. Airport Way
Stockton, CA 95206-3918

A Message from the Manager:

Want to make a New Year's Resolution that is easy to stick to AND improves your lifestyle as well as those around you?

This infographic denotes which areas to look for where water collects AND how removing and/or monitoring them weekly can eliminate those mosquito breeding sources altogether in 2026.

Eliminating standing water sources is the permanent solution to resolving mosquito issues. Fall and winter are great times of the year to locate and eliminate these breeding sources to help prevent mosquito problems during warmer months. Without water, mosquitoes will not have any places to lay their eggs and grow their larvae, which hatch into biting adults. Opportune times this winter to eliminate these potential breeding sources: Taking down holiday lights from house, taking trash to the curb, and conducting yard work. Look for and drain water in: clogged gutters, saucers under potted plants, tarps that collect rainwater, tree holes (fill with sand), birdbaths, corrugated downspout pipes, drip pans (under window air conditioning units), any artificial containers holding water. Image depicts common backyard mosquito sources: yard drains, empty excess water in flowering pots and watering cans, remove water on top of pool covers, uncovered grills and furniture covers, clogged storm drains, rot holes in trees, leaky hoses, ponds, wagons and other toys, neglected pools, water bowls for pets, buckets and barrels, clogged rain gutters, fountains and bird baths, open trash bins, and uncovered boats. Make sure to store items that can collect water upside down (such as wheelbarrows)

The District's mosquito-borne disease surveillance program tests samples of known mosquito species that have the ability to carry West Nile Virus (WNV). The samples tested are of 50 or less mosquitoes. For the week below, traps were placed and collected samples of mosquitoes were tested for WNV. The results are below.
Due to the cooler temperatures, the District has reduced the mosquito trapping schedule beginning the week of 10/12/25.

Positive Mosquito Samples
 0 for week of 10/12/25
139 total for 2025

Positive Dead Birds
0 for week 10/12/25
7 total for 2025

Click here for human cases and positive equine information: westnile.ca.gov

Mosquito populations increase as the weather gets warmer. Your well-being is our HIGHEST priority. However, it's initially ON you to keep mosquitoes OFF. Remove all standing water around your property. Report significant mosquito problems to the District. See tips to prevent mosquito bites.

Day Biting Mosquitoes

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The yellow fever mosquito, Aedes aegypti, and the Asian tiger mosquito, Aedes albopictus, have become established in some areas of California. Aedes aegypti were first found in west Stockton, CA during the summer of 2019. These species can develop in artificial containers in warmer areas.

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Public Information Outreach

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Through public information and outreach, the District provides updated and timely information and educational material to inform the public. YouTube, Facebook, Brochures and Publications, Be A Mosquito Detective, Take the Mosquito Quiz.

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