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IslandCounty Assessor


NEWS!  Island County Well Data is now available via an Online Mapping Application!  A second new groundwater data mapping application provides spatial analysis of groundwater conditions for approximately 2200 locations across the county.  The groundwater spatial analysis mapping application can be found HERE.

The Hydrogeology program ​works to understand the complex groundwater system that serves as the primary source of drinking water for county residents.  This understanding is accomplished by evaluating rainfall, water well and groundwater chemistry data using computer models and other analysis tools.  Additionally, all land-use projects that have a potential to impact the quality or quantity of groundwater are reviewed to ensure the protection of clean, reliable sources of drinking water for all residents of Island County.  Staff also serve as data stewards for the significant number of requests received from state and local agencies and community members.  Education is a key component of the Hydrogeology program.

Program outcomes include protection of drinking water sources from potential intrusion of seawater, protection of drinking water sources from potential contamination, and sound groundwater resource management.  72% of all Island County residents rely upon groundwater as a drinking water source.  All county residents share the responsibility to keep our groundwater resources safe.

Please contact the Island County Hydrogeologist to if you have questions regarding Island County Hydrogeology.

Island County

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Main Offices

Whidbey Office
1 NE 7th Street
Coupeville, WA 98239

Camano Office
121 N East Camano Dr
Camano Island, WA 98282

Helpful Numbers

Main Line: (360) 678-5111
Sheriff: (360) 679-7310

Juror Recordings
Superior Court: (800) 254-2755
District Court: (800) 946-9765

Island County Directory