Warm weather and stagnant water are combining to create a growing public health concern in the San Gabriel Valley. The San Gabriel Valley Mosquito and Vector Control District is responding to a rise in mosquito activity in the Eaton Fire burn area, where more than 1,300 pools have been left unattended. The situation is now classified as a significant Eaton Fire mosquito threat.

Damaged and abandoned properties are contributing to the problem, leaving behind water sources that serve as ideal mosquito breeding grounds. In addition to swimming pools, vector control teams are treating septic tanks and other water-holding containers across the affected area. District officials warn that mosquitoes only need a small amount of water to lay eggs, and untreated sources can lead to outbreaks of mosquito-borne illnesses.

Standing Water Sources Create Mosquito Threat

Spring temperatures have created optimal breeding conditions for mosquitoes, raising the risk of diseases such as West Nile virus. The district reports that common items like birdbaths, flowerpots, and buckets can quickly become breeding sites if left undisturbed. Crews are working throughout the region to inspect and treat both obvious and hidden water sources, including clogged gutters and containers left outdoors.

Pasadena resident Jerry Suarez said he only recently became aware of the problem after a visit from district staff. He said he hadn’t considered that a few puddles could pose such a risk, but now he regularly checks his yard to remove standing water. Officials hope more residents take similar precautions to protect their neighborhoods from the growing Eaton Fire mosquito threat.

Residents in Eaton Fire Burn Area Asked to Help Prevent Mosquito Threat

The San Gabriel Valley Mosquito and Vector Control District is asking for help from the public in identifying and reporting sources of standing water. Community involvement is critical to limiting mosquito populations and preventing the spread of disease. Property owners are urged to monitor their surroundings, especially in areas affected by the fire. Any neglected pools, uncovered tanks, or outdoor containers holding water may require treatment.

When concerns are reported, vector control staff will schedule inspections and apply treatment as needed. Quick action is essential to stop the mosquito life cycle before it leads to health hazards. Public health officials stress that early prevention is the most effective way to protect families and communities.

How to Report Mosquito Concerns 

Residents can report mosquito concerns or request service by visiting the San Gabriel Valley Mosquito and Vector Control District’s website at www.sgvmosquito.org. The site also offers information on mosquito-borne illnesses, prevention strategies, and updates on current activity in the region. Early reporting can make a meaningful difference in keeping neighborhoods safe.