Development Engineering

The Development Engineering (DE) department of Lakehaven Water and Sewer District manages several areas including Certificates of Availability, new water & sewer service connections, new development projects, & information regarding existing water & sewer system facilities. Below are links to current fees & charges, as well as our department's FAQs by PDF. Click on the links to the left for more specific information and documents & forms.

Fees, Charges & Deposits Schedules

Lakehaven Water & Sewer

Edgewood Sewer

Development Engineering FAQs by PDF

Call 811 Before You Dig

Development Engineering Staff Availability to Public

New hours effective June 10, 2019
Monday through Thursday....8AM to 4:30PM Friday......................................8AM to 3:30PM

These hours apply only to DE Staff located in the Water Shop Building: 31623 1st Ave. S., Federal Way, WA.
New Water Main Construction-2015
  1. Development Engineering

    Physical Address
    31623 1st Avenue S
    Federal Way, WA 98003

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

    253-945-1580 or

    Fax: 253-529-4081

    Business Hours:
       Monday through Friday
       8AM - 4:30PM
       Holiday Closures