Port Gamble MBR/LOSS Wastewater Treatment Plant

Project Overview

Wilson Engineering completed the design, construction administration, permitting, and value engineering for the 100,000 GPD MBR Package Plant. The plant design included a collection pump station, Membrane Bioreactor (MBR) treatment, control/ lab building, SCADA monitoring, headworks facility with fine screen, grit removal, equalization, plant drain pump station, site stormwater treatment and detention, and UV disinfection. This project was unique in that the system was permitted as a Large On-site Septic System through the Department of Health rather than the Department of Ecology.  The wastewater is treated more than typical wastewater so that it can be injected to drainfields near the plant.


Client Contact

John Poppe


Port Gamble, WA

Related Projects

Skagit Casino MBR Water Reclamation Facility

Engineering and construction management services for new membrane bioreactor (MBR) Water Reclamation Facility (WRF) that meets primary drinking water standards.

Moses Lake Wastewater Treatment Plants

Engineering and construction management for two new wastewater treatment plants (4 MGD and 0.75 MGD), and a new central headworks facility.

City of Ferndale Sewer Comp. Plan & WWTP Facility Plan

Comprehensive Sewer Plan including sewer system hydraulic modeling and capital plan, along with WWTP Improvements Facility Plan.