Office of Drinking Water Organizational Chart (PDF)
Drinking Water Key Contacts
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.
Regional Offices

Technical Assistance, Office Directions, Staff Contacts
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.
Includes Island, King, Pierce, San Juan, Skagit, Snohomish and Whatcom Counties.
Includes Clallam, Clark, Cowlitz, Grays Harbor, Jefferson, Kitsap, Lewis, Mason, Pacific, Skamania, Thurston, and Wahkiakum Counties.