Skip to main content
close

KingCounty.gov is an official government website. Here's how you knowexpand_moreexpand_less

account_balance

Official government websites use .gov

Website addresses ending in .gov belong to official government organizations in the United States.

lock

Secure .gov websites use HTTPS

A lock lock or https:// means you've safely connected to the .gov website. Only share sensitive information on official, secure websites.

King County Logo
May
29

Completed capital projects

View a list of recently completed wastewater capital projects. 

Ballard Siphon replacement, Seattle (2014)

Barton CSO control / green stormwater infrastructure, Seattle (2015)

Barton Street Pump Station upgrade, Seattle (2015)

Bellevue Pump Station upgrade & force main installation, Bellevue (2011)

Bellevue influent trunk improvement, Bellevue (2012)

Brightwater Treatment System (2012)

Denny Way/Lake Union CSO control, Seattle (2005)

Denny Way Regulator Station upgrade, Seattle (2018)

Eastgate Interceptor lining, Bellevue (2018)

Eastside Interceptor pipe lining (Section 2), Renton (2020)

Eastside Interceptor (Section 13) Lining, Bellevue (2016)

53rd Avenue Pump Station upgrade, Seattle (2010)

Fremont siphon replacement, Seattle (2017)

Henderson/M.L. King CSO control, Seattle (2005)

Hidden Lake Pump Station replacement and sewer improvement, Seattle (2009)

Interbay Pump Station upgrade, Seattle (2015)

Juanita Bay Pump Station replacement, Seattle (2009)

Kent-Auburn conveyance system improvements (Phase A), Kent & Aburn (2014)

Kent-Auburn conveyance system improvements (Phase B) Kent, Auburn, & Pacific (2019)

Kirkland Pump Station and sewer upgrade, Kirkland (2009)

Loop® vehicle maintenance facility, North Bend (2022)

M Street trunk repair, Auburn (2020)

Magnolia Wet Weather Storage Facility, Seattle (2019)

Murray Wet Weather Facility, Seattle (2017)

North Beach CSO control, Seattle (2017)

North Beach force main maintenance, Seattle (2012)

North Beach outfall assessment, Seattle (2013)

North Creek Interceptor, Bothell (2019)

North Creek Storage Facility, Bothell (2004)

Rainier Valley wet weather storage, Seattle (2018)

Ravenna Creek pipe extension, Seattle (2011)

Skyway infiltration/inflow reduction, Seattle (2012)

Sunset and Heathfield pump stations upgrades - Bellevue (2022)

Sweyolocken Pump Station upgrade, Bellevue (2005)

Thornton Creek Basin - sewer study and upgrade (2023)

West Point Treatment Plant office annex, Seattle (2014)

West Point Treatment Plant screenings improvement, Seattle (2015)

West Point Treatment Plant Improvement Projects, Seattle (2018 and later)

expand_less