Ecology's Regional Offices
Water Quality Program

Central Regional Office
Water Quality Program, Permit Coordinator 15 West Yakima Avenue Suite 200
Yakima, WA 98902-33887
509-575-2490 - TTY: 711 or 1-800-833-6341 (Map to the Central Regional Office)
For: Yakima, Benton, Klickitat, Chelan, Douglas, Kittitas, and Okanogan Countiese (see map blow)
 
Eastern Regional Office
Water Quality Program, Permit Coordinator
N. 4601 Monroe
Spokane, WA 99205-1295
509-329-3400 - TTY: 711 or 1-800-833-6341 (Map to the Eastern Regional Office)
For: Spokane, Grant, Adams, Whitman, Ferry, Franklin, Stevens, Pend Oreille, Garfield, Columbia, Asotin, Lincoln, and Walla Walla Counties (see map below)
 
Northwest Regional Office Water
Quality Program, Permit Coordinator
3190 - 160th Avenue SE
Bellevue, WA 98008-5452
(425) 649-7000 - TTY: 711 or 1-800-833-6341 (Map to the Northwest Regional Office)
For: King, Whatcom, Skagit, Snohomish, San Juan, Kitsap, and Island Counties (see map below)
 
Southwest Regional Office
Water Quality Program, Permit Coordinator
P.O. Box 47775
Olympia, WA 98504-7775
360-407-6300 - TTY: 711 or 1-800-833-6341 (Map to the Southwest Regional Office)
For: Thurston, Clallam, Jefferson, Grays Harbor, Mason, Pierce, Lewis, Skamania, Wahkiakum, Cowlitz, Clark, and Pacific Counties (see map below)