Vashon-Maury Island, WA | Region 10 | US EPA

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Vashon-Maury Island, WA

Vashon-Maury Island is located near the southern end of Puget Sound in the southwestern corner of King County, Washington. The Island covers an area of 36.7 square miles and its population has been estimated at approximately 7,800 persons.

Region 10 received a petition from the Seattle-King County Department of Public Health on April 2, 1992, which requested EPA to designate Vashon-Maury Island as a sole source aquifer.

EPA's review of the petition and other data determined that:

The Island's glacial geologic deposits make the aquifer system vulnerable to contamination from a variety of activities occurring on the land surface.

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Designation (Federal Register - as proposed)
Support Documents
Sole Source Aquifer Maps

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