| Since the initial formation of the District,
numerous annexations, mergers, and withdrawals to the District's territory have occurred,
resulting in the current District boundary: The
Highline Water District is located south of Seattle, WA and generally extends from just
east of Interstate Highway 5 on the east to the Puget Sound on the west, and from State
Route 518 on the north to South 284th Place on the south. The District lies within
portions of the cities of Burien,
Des Moines,
Federal Way, Kent, Normandy
Park, SeaTac, and
Tukwila. It is included on the
Highline, Federal Way and Green River Community Planning Areas. Portions of the
District are also within the limits of unincorporated
King
County. The District is also within the South King County Critical Water Supply
Service Area and therefore subject to the requirements of the South King County
Coordinated Water System Plan.

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