The District

The Lakehaven Water and Sewer District is committed to the continued delivery of safe, reliable and high quality drinking water and environmentally responsible sewer service to our customers.



The District is located between Seattle and Tacoma in King and Pierce Counties. The District’s northern boundary is one mile south of Kent, the southern boundary overlaps slightly the Pierce County line, the western boundary follows the Puget Sound shoreline and the eastern boundary overlaps slightly the western city limits of Auburn. The District provides service within most of the City of Federal Way and small portions of the cities of Auburn, Pacific, Tacoma, Des Moines and Milton. In addition, the District serves an unincorporated area of King County approximately 18 square miles north of Federal Way and west of Auburn.

The District encompasses an area of approximately 35 square miles with a service population of approximately 112,000 people. The District is primarily residential in character with approximately 75% of the land area devoted to single family dwellings.
The District is a municipal corporation of the State of Washington. The King County Board of Commissioners officially incorporated Lakehaven Sewer District on February 27, 1956, by adoption of Resolution Number 16210. On September 17, 1985, voters authorized the consolidation of King County Water District Number 124 into Lakehaven Sewer District. In conjunction with this merger, Lakehaven Sewer District changed its name to "Federal Way Water and Sewer District."

A merger with King County Water District Number 56 was completed in November, 1987. On August 7, 1994, the District changed its name to "Lakehaven Utility District". On October 6, 2016 the name was officially changed to "Lakehaven Water and Sewer District" to better clarify the products it serves to the community.

The District has, under one name or another, provided service to the Federal Way area for more than 50 years. The water system includes 400 miles of mainline, 22 wells and 12 storage tanks with an approximate storage capacity of 31 million gallons. The average daily pumping rate is about 10.6 million gallons per day (MGD).

The sewer system includes 350 miles of mainline, 27 pump stations and 2 secondary wastewater treatment plants. The Redondo Plant is designed for an average flow of 4.32 MGD, The Lakota Plant is designed for an average flow of 10 MGD.

Financial Statements

Each year The District is audited by the Office of the State Auditor. A “clean” audit is one in which no findings are issued and no material misstatements are noted in the District’s financial statements. The audit, performed annually by the Auditor’s Office, examines the District’s financial statements and its compliance with legal regulations that govern the operation of the water and sewer utility. The District takes pride in meeting its financial reporting and legal compliance obligations and the current report continues the District’s long record of having no audit findings.

The most recent three years of financial and compliance audit reports can be found at the links below. Audit reports for earlier years can be downloaded from the Washington State Auditor’s website at

  1. Physical Address
    31627A 1st Avenue S
    Federal Way, WA 98003

    Mailing Address
    P.O. Box 4249
    Federal Way, WA 98063

    Fax: 253-402-1987
    Emergency Phone: 253-941-1516

Areas Serviced

               Auburn | Des Moines | Federal Way | Kent | Milton | Tacoma

              Federal Way Public Schools | South King Fire and Rescue

About Service

Find a list of communities serviced by Lakehaven Water and Sewer District and a list of useful links to provide information about the district.