Surface Water Management Division
Useful Groundwater Links
King County Groundwater Program
The Snohomish Health District
The Snohomish Health District provides homeowner education, water sampling services, well inspection, and well permitting.
Washington State Department of Ecology Ground Water Information
This link will direct you to the groundwater programs within the Washington State Department of Ecology.
Washington State Department of Ecology's Water Well Log Report Search & Viewer
Washington State Department of Ecology's Water Resource Program
Groundwater assessment in Washington State
This will connect you with the Washington State Department of Ecology’s groundwater staff.
Chapter 173-200 WAC, Water Quality Standards For Ground Waters - Of The State Of Washington
This link will take you to the Washington State Administrative Code that covers groundwater.
Groundwater Sources Under the Direct Influence of Surface Water (GWI)
This is the Washington State Department of Health webpage on the rules governing Group A or community well systems.
US Environmental Protection Agency Groundwater and Drinking Water
This link takes you to the Environmental Protection Agency’s Office of Groundwater and Drinking Water.
US Geological Survey Groundwater Information Pages
This link will direct you to information on groundwater that has been compiled by the US Geological Survey.
US Geological Survey Water Resources of Washington State
This link will direct you to information on groundwater, water quality, and many other topics that have been compiled by the US Geological Survey specific to Washington State.
US Geological Survey Ground-Water Data for Washington
This link takes you to the US Geologic Survey’s groundwater quality database for Washington State.