Chiwawa Mosquito District
Chelan County Mosquito District 4 · Plain, WA
Site update in progress
Our mission is to protect public health through effective, science-driven mosquito control that also respects the environment and the people who call this special place home. Through careful monitoring, targeted application, and responsible stewardship, we focus on solutions that work — without unnecessary harm.
Your Input Needed
2026 District Feedback Survey
Help us understand what matters most to you. Your answers help the board plan next year’s work and budget. It takes about 5–7 minutes and is open through November 25, 2026.
Take the survey →
Scan with your phone camera
Hearings Held
2027 Budget Hearings
Tuesday, October 13, 2026 · 7:00 PM
Public Zoom budget Q&A — presentation of the proposed 2027 budget, questions, and public comment. This session has taken place; the recording is below.
Tuesday, October 27, 2026 · 4:00 PM · Plain, WA — held
Formal in-person public hearing on the 2027 budget, held at the District's regular board meeting.
Watch the recording of the October 13 Zoom Q&A
The recording is available now. If asked, enter the passcode below.
Watch the Zoom recording →
Passcode: 2Cy.Mgb?
For assistance, call 509.888.3335.
District Documents
Budget materials, agendas, and other district documents are available now in our shared document folder.
Open District Documents →Chiwawa Mosquito District
Chelan County Mosquito District 4 · Plain, Washington
questions@chiwawadistrict.com · 509.888.3335
Our full website is being rebuilt — check back soon at chiwawadistrict.com