- Adams
- Adams County Integrated Health Care Services
- Asotin
- Asotin County Public Health
- Benton
- Benton-Franklin Health District
- Chelan
- Chelan-Douglas Health District
- Clallam
- Clallam County Health and Human Services
- Clark
- Clark County Public Health
- Columbia
- Columbia County Public Health
- Cowlitz
- Cowlitz County Health and Human Services
- Douglas
- Chelan-Douglas Health District
- Ferry
- Northeast Tri County Health District
- Franklin
- Benton-Franklin Health District
- Garfield
- Garfield County Health District
- Grant
- Grant County Health District
- Grays Harbor
- Grays Harbor Public Health and Social Services
- Island
- Island County Public Health
- Jefferson
- Jefferson County Public Health
- King
- Seattle and King County Public Health
- Kitsap
- Kitsap Public Health District
- Kittitas
- Kittitas County Public Health
- Klickitat
- Klickitat County Public Health
- Lewis
- Lewis County Public Health and Social Services
- Lincoln
- Lincoln County Health Department
- Mason
- Mason County Public Health
- Okanogan
- Okanogan County Public Health
- Pacific
- Pacific County Health and Human Services
- Pend Oreille
- Northeast Tri County Health District
- Pierce
- Tacoma - Pierce County Health Department
- San Juan
- San Juan County Health and Community Services
- Skagit
- Skagit County Public Health
- Skamania
- Skamania County Community Health
- Snohomish
- Snohomish County Health Department
- Spokane
- Spokane Regional Health District
- Stevens
- Northeast Tri County Health District
- Thurston
- Thurston County Public Health and Social Services
- Wahkiakum
- Wahkiakum County Public Health and Human Services
- Walla Walla
- Walla Walla County Community Health
- Whatcom
- Whatcom County Health Department
- Whitman
- Whitman County Public Health
- Yakima
- Yakima Health District