King County Wastewater Treatment Division

An orca breaches from calm water with a forested shoreline in the distance.

Community Water Quality

September 11, 2026

Imagining King County’s clean water future: Our Vision for 2100

Community voices helped shape our Vision for Clean Water. See how it will guide wastewater services and investments for generations to come.

wtdsocialmedia

Worker wearing blue gloves removes debris from a pump inside a wastewater facility.

Close-up of debris clogging an opening in a wastewater pump.

Mass of wipes and debris on the floor after being removed from wastewater pump.

Workers in safety gear examine control panels inside a pump station.

Worker in safety gear hoses down the wastewater wet well while holding a flashlight.

Wide view of a pump room with pipes and valves.

Operations Water Quality

August 18, 2026

Clogged, not forgotten: The hidden reality when you flush wipes

New equipment at a pump station in Shoreline offers hope for wastewater operators who respond regularly to messy wipe clogs.

wtdsocialmedia

Hands sort freshly picked red plums into a cardboard box.

Community People

August 5, 2026

Growing new beginnings at CitySoil Farm

How King County is helping create meaningful educational experiences for teens who are living with substance use disorders and mental health needs.

wtdsocialmedia

A person wearing a hardhat, safety glasses, reflective vest and gloves in front of pipes, a clock and valves.

People

June 23, 2026

Persistent as water: Celebrating the women engineers of King County WTD

From treatment plants to major capital projects, these seven women engineers are helping shape the future of wastewater infrastructure while inspiring those who follow behind them.

Marie Fiore

Gloved worker climbs into a maintenance hole, one arm braced on the rim, with the cover set aside on the pavement.

Infrastructure Operations

May 13, 2026

Inside the pipes that keep everything flowing

Beneath King County streets, crews inspect hundreds of miles of sewer pipes to help keep wastewater flowing reliably. Follow along with the conveyance inspection team as they send cameras and a remote-controlled crawler deep below the surface.

wtdsocialmedia

Aerial view of a large wastewater treatment facility located on a narrow shoreline surrounded by blue water. The plant includes a building with solar panels on the roof. In the distance across the water, a tree-lined coast and snow-capped mountains are visible under a clear sky.

Sustainability

April 6, 2026

Clean energy projects bring $5.2 million in savings for WTD

Through federal and local energy-efficiency incentives, clean energy projects at West Point Treatment Plant earned King County $5.2 million in savings for the 2024 tax year.

wtdsocialmedia

Portrait of a maintenance worker wearing a hard hat and safety vest, holding a long trimming tool on a wooded path in fall.

Operations People

January 21, 2026

The senior gardener at South Treatment Plant sees the beauty in it all

For more than 20 years, Jim Davis has cared for the 90 acres around South Treatment Plant, bringing a careful eye and a sense of beauty to the everyday work that keeps the grounds thriving.

wtdsocialmedia

Workers in hard hats and safety vests stand together in a forest during an on-site project discussion.

WTD Updates

December 23, 2025

Progress across communities, waterways, and projects in 2025

Steady work strengthened the system, from capital upgrades to river cleanup and daily operations.

wtdsocialmedia

Wastewater Treatment Operator Tyler Stiltner wearing a high visibility jacket stands near flooded land in Carnation.

Operations

December 12, 2025

Stranded but steady: Operator keeps Carnation Treatment Plant running during atmospheric river

When flooding cut off the Carnation Treatment Plant, Wastewater Operator Tyler Stiltner stayed onsite to keep it running.

wtdsocialmedia

A WTD operator stands beside a large multi-cylinder generator used for emergency power.

Operations

November 26, 2025

Rainy season is here, meet our backup generators

Our backup generators and offsite operators work together to keep pumps and critical equipment running when storms take out the power.

wtdsocialmedia

A group of people wearing yellow hard hats and orange safety vests touring a wastewater treatment facility.

Water Quality

October 30, 2025

Protecting Puget Sound through source control

The King County Industrial Waste Program is offering treatment plant tours and conducting a comprehensive survey to help manage industrial pollutants, including PFAS and 6PPD-Q, that could enter our regional wastewater system and impact Puget Sound.

wtdsocialmedia

Community People

October 24, 2025

Building independence through inclusion

At Brightwater Treatment Plant, young adults in the ATI program tackle real-world challenges while building confidence and job skills along the way. Their hands-on work not only transforms the landscape but also sparks personal growth, independence, and lasting pride.

wtdsocialmedia

Clean Water Stories

from King County

Imagining King County’s clean water future: Our Vision for 2100

Clogged, not forgotten: The hidden reality when you flush wipes

Growing new beginnings at CitySoil Farm

Persistent as water: Celebrating the women engineers of King County WTD

Inside the pipes that keep everything flowing

Clean energy projects bring $5.2 million in savings for WTD

The senior gardener at South Treatment Plant sees the beauty in it all

Progress across communities, waterways, and projects in 2025

Stranded but steady: Operator keeps Carnation Treatment Plant running during atmospheric river

Rainy season is here, meet our backup generators

Protecting Puget Sound through source control

Building independence through inclusion

Clean Water Stories

from King County

Share this: