West Umatilla Mosquito Control District Launches 2026 Mosquito Control Program

The district covers 525 square miles in Western Umatilla County, including Hermiston, Umatilla, Stanfield, and Echo.

Mar. 26, 2026 at 10:55pm

Got story updates? Submit your updates here. ›

The West Umatilla Mosquito Control District (WUMCD) has announced the start of its 2026 Mosquito Control Program. The district plans to target areas of standing water where mosquito larvae thrive, using spraying from helicopters, unmanned aerial vehicles, and truck-mounted foggers. The program aims to control mosquitoes and reduce the risk of West Nile Virus, which is spread by infected mosquitoes.

Why it matters

Mosquito-borne illnesses like West Nile Virus can pose a public health risk, especially in areas with large mosquito populations. The WUMCD's control program is an important effort to protect the local community and mitigate the potential spread of these diseases.

The details

The WUMCD's 2026 Mosquito Control Program will use a combination of aerial and ground-based spraying techniques to target mosquito larvae and adult populations. Aerial spraying will be used for large bodies of water, while hand spraying will be done in smaller areas. Truck-mounted foggers will be used to control adult mosquitoes in areas with high populations.

  • The mosquito control program started on March 19, 2026.

The players

West Umatilla Mosquito Control District (WUMCD)

A mosquito control district that covers 525 square miles in Western Umatilla County, Oregon, including the cities of Hermiston, Umatilla, Stanfield, and Echo.

Got photos? Submit your photos here. ›

What’s next

Residents of the mosquito district can request service or opt-out of spraying by contacting the WUMCD.

The takeaway

The WUMCD's mosquito control program is an important public health initiative to reduce the risk of mosquito-borne illnesses like West Nile Virus in the local community.