Oyster Bay Beach Sewer Upgrades

Project Status (Updated December 22, 2020)

The design for this project is 90% complete. The scope of work was modified to include a large diameter force main along Kitsap Way and Shorewood Drive that will allow for future upland service for Sewage Pump Station OB-2. Bidding for construction is anticipated in early March.

Project Overview

Many of the residential and commercial properties along Oyster Bay and Ostrich Bay are connected to sewer mains buried along the shores of these water bodies. These sewers are difficult to access and maintain and occasionally surcharge during heavy rain events. The City is in the process of eliminating/reducing the beach sewers over time.       

The proposed project will eliminate lateral connections to the gravity sewer main buried along the Oyster Bay beach between Madrona Point Drive and Kitsap Way (approximately 3600 feet in length). The sewer main will remain in-place and be converted to a redundant pressure main, but with no lateral connections. Grinder pumps will be installed on upland properties (estimated between 50 and 60 properties) to replace the beach gravity sewer system. The grinder pumps will pump to sewer piping (location and route of piping to be determined) most likely along Shorewood Drive and Kitsap Way. Project benefits include pollution reduction by reducing potential sewer discharge into Oyster Bay, reducing sewer infrastructure in the marine environment, and eliminating problematic maintenance access.

Click here for the project site map.

Budget and Funding

The estimated project cost is $3,770,000. The City has obtained a loan for $3,800,000 from the Department of Ecology Clean Water State Revolving Fund loan program to fund both design and construction. 

This Project has been funded wholly or in part by the United States Environmental Protection Agency under an assistance agreement to the Washington State Department of Ecology. The contents of this document do not necessarily reflect the views and policies of the Environmental Agency, nor does the mention of trade names or commercial products constitute endorsement or recommendation for use.


Following is the anticipated project schedule. Click here to download a graphical PDF of this schedule. 

Task   Dates
 Dept. of Ecology SRF Loan Executed  June 2018
 Consultant Selection  March 2019 - July 2019
 Design and Permitting  August 2019 - August 2020
 Bid/Award  December 2020 - February 2021
 Construction  March 2021 - January 2022
 Loan Expiration  December 2022

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