Skip to main content
King County logo

photo of downtown Seattle

Hot water goes down drains to connected sewer pipes every day and the water in these pipes maintains a fairly constant temperature as it travels from homes and businesses to treatment plants. Heat energy from these pipes is a renewable resource that isn’t being used.

King County Wastewater Treatment Division (WTD) is the first in Washington state, and one of the first wastewater utilities in the nation to offer Sewer Heat Recovery (SHR). Private commercial property owners and developers have the opportunity to recover heat energy from WTD sewer pipes for the purpose of heating or cooling their buildings. SHR technology is fairly common in Europe and parts of Canada, but standardized SHR use-agreements are pioneering in the United States.

By taking a holistic approach to partnering with businesses to address the impacts of climate change, this program is just one way King County is reimagining resilient and sustainable communities.

Only one project space remaining. For more information about the application process, visit the Potential Users page HERE. All applications are reviewed on a first-come, first-served basis. Program remains open until final project slot is filled.

For more information about Sewer Heat Recovery, please contact us at: