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Groundwater Management
Groundwater is important to streams, lakes and wetlands that support fish and wildlife. Groundwater feeds surface streams in the summer months and provides water for salmon and other fish when there is little rain. Groundwater also provides drinking water for a significant percentage of King County residents.
King County groundwater resources
Groundwater protection program
Learn how the Department of Natural Resources and Parks partners with other agencies and local committees to protect the quantity and quality of groundwater resources in King County.
Groundwater data, maps, and reports
Browse maps and reports, or look up groundwater data with a text-based search or by searching on an interactive map.
Groundwater management areas
King County has five Groundwater Management Areas within the County boundaries: East King County, South King County, Redmond-Bear Creek Valley, Issaquah Creek Valley, and Vashon-Maury Island.
Private wells: Public Health - Seattle and King County
Resources and regulations related to wells and other small drinking water systems.
From the archives...
How do you teach kids about the importance of groundwater? With singing, dancing groundhogs!
Journey back in time to 2006, when King County's Groundwater Protection Program teamed with Leaping Media to produce the award-winning Groundwater Story educational video. Learn groundwater facts from a pair of rodents and a singing aquifer!
State and federal groundwater resources
United States Geological Survey Groundwater Data for Washington State
The USGS Washington Water Science Center has information about Washington's rivers and streams, groundwater, water quality, and cutting-edge water research.
US Environmental Protection Agency: Ground Water and Drinking Water
A clearinghouse of information on drinking water, with articles on aquifers, wells, and protecting underground sources of drinking water.
US Environmental Protection Agency: Drinking water standards
Primary standards and treatment techniques protect public health by limiting the levels of contaminants in drinking water.
Washington State Department of Ecology: Wells
The Washington DOE regulates well construction to ensure safe drinking water, protect water resources, and provide minimum standards for the drilling industry.
Washington State Department of Health: Office of Drinking Water
The Office of Drinking Water focuses on oversight of public drinking water systems, including water quality monitoring, water system planning, waterworks operator certification, implementation of the federal Safe Drinking Water Act, and implementation of the Drinking Water State Revolving Fund.
Washington State Department of Ecology: Water Supply
The Washington DOE manages water resources to benefit all Washingtonians and to protect the natural environment for current and future generations.
Washington State Department of Natural Resources: Groundwater
A statewide look at groundwater from the Washington Geological Survey.