skip to main content

For more information about the Regional Infiltration and Inflow Control Program, please contact Kristine Cramer.

Wastewater Treatment Division
King Street Center
Suite 0505
201 South Jackson Street
Seattle, WA 98104

Get Directions to our office location in Seattle, Washington

Initial I/I reduction projects

Location of initial I/I reduction project

In accordance with the adopted Regional I/I Control Program, in 2011 King County will construct an I/I reduction project in the Skyway Water and Sewer District service area (unincorporated King County). I/I projects were also planned in Bellevue and Issaquah, however, in 2010 King County budget limitations led to a decision not to implement these projects.

While some of the sewer rehabilitation work will focus on the public portions of the sewer system (sewer mains and manholes), much of the rehabilitation work will occur on private side sewers with the cooperation of property owners. King County and the local sewer agencies will work closely with the affected communities during the design and implementation of the projects.

The results of these initial projects will be used to develop recommendations to the King County Council regarding long-term I/I reduction and control, including applicable changes to policy or code

Project schedule

Regional I/I Control Program Milestones, 2007 through 2013

Next steps

During final design in 2010 property owners that are eligible and willing to participate in the sewer rehabilitation project will be asked to sign a Right of Entry agreement for construction. To limit the amount of excavation in neighborhoods, King County will use less invasive trenchless rehabilitation techniques whenever possible.

See the Frequently Asked Questions for more project information.Skyway I/I reduction project area

April 2011: King County has begun construction on the side sewer repair project to reduce infiltration and inflow (I&I) in the Skyway/Lakeridge area. Learn more.

New releases

Related information