Office of Drinking Water Organizational Chart (PDF)
Drinking Water Headquarters, Olympia — Office directions and staff contacts.
Operator Certification Contacts
After-Hours Emergency Hotline — For water system operators, local health officials, laboratory operators and others who need immediate technical, engineering, or public health advice from state drinking water experts during emergencies.
Technical Assistance, Office Directions, Staff Contacts
Map of Engineering and Planning Assignments (PDF) for all three regions.
Eastern Regional Office
Includes Adams, Asotin, Benton, Chelan, Columbia, Douglas, Franklin, Ferry, Garfield, Grant, Kittitas, Klickitat, Lincoln, Okanogan, Pend Oreille, Spokane, Stevens, Walla Walla, Whitman and Yakima Counties.
Northwest Regional Office
Includes Island, King, Pierce, San Juan, Skagit, Snohomish and Whatcom Counties.
Southwest Regional Office
Includes Clallam, Clark, Cowlitz, Grays Harbor, Jefferson, Kitsap, Lewis, Mason, Pacific, Skamania, Thurston, and Wahkiakum Counties.