Links to Additional Information About Groundwater in Washington State

Washington Department of Ecology Groundwater Information

Groundwater-related Information From Other Washington State Agencies

Groundwater-related Information from Federal Agencies

Locally-based Groundwater Information


Washington Department of Ecology Groundwater Information

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Groundwater-related Information From Other Washington State Agencies

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Groundwater-related Information from Federal Agencies

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Locally-based Groundwater Information

Watershed planning groups often evaluate groundwater as part of locally-based water resource management efforts. To see if there's a planning group in your area, go to: Watershed Planning in Washington

Wellowner.org has a lot of helpful information related to groundwater and private water well systems, including tips on maintaining and testing your domestic well.

County agencies or partnerships can also be a good source of information about local groundwater conditions. Local health departments can provide helpful guidance on siting and maintaining water supply wells, and often provide a water-testing service if you're concerned about the quality of the water in your domestic well (usually focused on nitrates, bacteria, and in some counties, arsenic). Here's a list of web links for many of these local programs:

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If you have any suggestions about additional resources to add to this page, please contact: Charles Pitz (chpi461@ecy.wa.gov).