Watertown Outlines 2026 Mosquito Control Plan; Spraying Only When West Nile Risk Rises

Northeast Radio SD News – Watertown, SD - With mosquito season approaching, the Watertown Park, Recreation, and Forestry Department has detailed its 2026 Mosquito Control Program, emphasizing prevention and targeted action to reduce the risk of West Nile Virus.

According to the department, crews are already treating known breeding areas — including storm drains and standing water in public spaces — to stop mosquitoes before they hatch. The city also monitors mosquito traps placed throughout Watertown each day to track population levels.

City officials stress that Watertown does not spray for nuisance mosquitoes. Spraying is only conducted when trap data shows mosquito numbers have reached levels that elevate the risk of West Nile Virus. If spraying becomes necessary, residents will be notified ahead of time. Spraying typically occurs from dusk through early morning.

While health impacts from spraying are considered uncommon, the city advises individuals with sensitivities or preexisting conditions to take simple precautions during spray periods, such as staying indoors, closing windows, and covering outdoor items or exposed skin.

Residents are also encouraged to help reduce mosquito populations around their homes. The most effective step is eliminating standing water on private property — including in containers, gutters, and low-lying areas. The city also recommends using insect repellent outdoors and wearing long sleeves and pants when possible.

More information about the Mosquito Control Program is available at watertownsd.us.

Residents who want advance notice before any spraying occurs can sign up for text or email alerts at watertownsd.us/notifyme.

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