King County’s Wastewater Treatment Division (WTD) is being recognized for its commitment to sustainable communities and the environment. WTD’s Sunset / Heathfield Pump Stations and force main upgrade project was awarded an Envision® Silver Award this month for project sustainability. This is the second Envision-certified project for the region’s wastewater utility. In 2018, King County’s…
The West Point Treatment Plant processes about 100 million gallons of wastewater each day, and up to 440 million gallons during heavy rains. While the plant’s operators are working hard to keep the treatment process flowing smoothly, a momentary lapse of power supply quality can bring vital equipment operations to a hard stop. That’s why in February 2021, King County Executive Dow Constantine signed an emergency declaration and the King County Council authorized up to $65 million to provide West Point with more reliable power. The team…
Our employees plan, design, build, and operate treatment facilities to clean wastewater for the region. Planning and building new wastewater infrastructure is complex. It can easily take a decade or more to go from identifying a project is needed, to cutting the ribbon on a newly completed facility. Each project goes through several phases of…
Wastewater treatment workers are essential frontline workers you may not have immediately thought about during the pandemic. Like other critical government workers, they can’t do their jobs from home, so during 2020 they had to adjust many of the ways they worked in order to protect their own health and prevent the spread of the…
The employees who inspect and monitor all of the structures and pipes within the regional sewer system have a big job to do – with over 380 miles of sewer pipes to check, spread out over 424 square miles. The Conveyance Inspection and Flow Monitoring (CIFM) group uses instruments and equipment to see what’s happening…
King County’s Coal Creek Sewer Upgrade Project team is reaching out in summer 2021 to hear from people who care about accessible recreation.
What is happening A nationwide shortage of sodium hypochlorite – a chlorine compound and disinfectant in common household bleach and the primary disinfectant in our wastewater treatment process – triggered by a supply-chain disruption, is impacting wastewater treatment operations throughout the Northwest, including King County. Like several other utilities in the region, our staff is conserving the disinfectant while we try to…
The Brightwater Trails area in Woodinville has been popular for families, dog walkers, birders, and runners since it opened. Three miles of trails have connected people to nature and art for over 10 years. This year, the trails provided a welcome breath of fresh air for people looking to get some socially distanced exercise outside.…
It’s important to us that our wastewater facilities to be a good neighbor to the people who live, work and play near them. Part of being a good neighbor means that we work hard to control odors / smells that come from the wastewater treatment process—which can get gassy! Why does sewage smell? Treating dirty water at…
Built in 1966, West Point Treatment Plant is the largest wastewater treatment plant by volume in Washington state, and the third largest by average daily flow on the West Coast. Like much of the King County wastewater system, it’s more than 55 years old and many of its components reach their “end of life” each…
King County Wastewater Treatment 