Matthews Park Pump Station and Sewer Improvement Projects -- Completed Fall 2006

King County protects public health and the environment by conveying and treating the region’s wastewater. To ensure safe and reliable operations in the future, the King County Wastewater Treatment Division has completed three projects in the Matthews Beach area to upgrade aging infrastructure. These facilities (see map below) carry wastewater from the north end of Lake Washington and the City of Seattle to the West Point Treatment Plant in Discovery Park.

What We've Accomplished

Since 2002, King County has completed three projects in the Matthews Beach area to upgrade aging infrastructure:

• Upgraded the pump station
• Repaired corroded concrete inside the North Portal (entrance) to the Lake City Tunnel in 2002
• In 2003, repaired the Matthews Park force main by slip lining the existing 42-inch pipe with a new plastic pipe. Slip lining the force main minimized construction-related disruption and extended the life of the pipe.

Construction Updates

• Fall 2006 (224 KB, PDF)
• September 2005 (579 KB, PDF)
• Summer 2005 (505 KB, PDF)
• Fall 2004 (540 KB, PDF)

Project News

• This Week, Feb. 4, 2004 - Sewer repair method saves money, reduces neighborhood impacts and ensures reliability
• This Week, Oct. 28, 2002 - Fixing aging sewers no pipe dream in King County

For more information

Contact Jennifer Kauffman about King County's project at 206-263-6029 or jennifer.kauffman@kingcounty.gov.

Department of Natural Resources and Parks
Wastewater Treatment Division
201 S. Jackson St.
Seattle, WA 98104-3855
Fax: 206-684-1278

Updated: April 13, 2007

Related Information:

Northwest Lake Washington Planning Area
(Conveyance System Improvement Program)