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Wastewater

Introduction
	Preventing Sewer Backups
	Fats, Oils and Grease Control

Wastewater is all the water that leaves the inside of your home or business through sinks, toilets, washing machines, etc. and enters Bellevue's wastewater (sewage) collection system. Wastewater then flows through city-owned and maintained pipes into King County's regional sewage system, where it is treated to meet federal and state water quality standards.

Sewer system illustration (click for full-size)

Bellevue's Wastewater Division is responsible for maintenance and repairs of the main sewer lines, including the service conections within the city's right of way and dedicated easements.

Service Area
Bellevue’s effective and efficient wastewater collection system includes approximately 524 miles of mainline pipes, 130 miles of service stubs (connection pipe in the right of way and dedicated easements), and 46 pump and lift stations. The pumping stations provide a means of moving wastewater from areas lacking gravity lines to an adjacent area where gravity lines exist to convey flow. As of 2011, the Wastewater division served an estimated 135,300 residents across 37 square miles, including Medina, Clyde Hill, Hunts Point, Yarrow Point, Beaux Arts and South Cove of Issaquah.

Private sewer pipe location
If you want to know where your sewer pipes are located on your property, call 425-452-4187, and a Utilities employee will provide what information is available. The City does not perform locates on private property.

In case of emergency

Call the Wastewater Operation and Maintenance Division immediately if sewage is coming up inside your home or business when you are not using any water, including laundry and dish washers. Wastewater staff will ask a few pertinent questions and dispatch a maintenance crew if needed. Maintenance crews are available 24 hours a day at 425-452-7840 or 911 after business hours.

Call a private service if you have slow drainage or suspect a blockage. The problem is likely in your side sewer line.

Contact Information

Utilities Operations and Maintenance & 24-Hour Emergency Response
Bellevue, WA 98009
Phone: 425-452-7840
E-mail: OMSupport@bellevuewa.gov?cc=whairfield@bellevuewa.gov

Utilities Department
450 110th Ave. NE
P.O. Box 90012
Bellevue, WA 98009
Phone: 425-452-6932
E-mail: utilities@bellevuewa.gov?cc=whairfield@bellevuewa.gov