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King County Industrial Waste Program (KCIW)

Contacting the King County Industrial Waste Program:

Complete staff and program directory

The King County Industrial Waste Program
130 Nickerson Street, Suite 200
Seattle, WA 98109-1658
Phone: 206-263-3000 and TTY Relay: 711

Fax: 206-263-3001

E-mail: Info.KCIW@kingcounty.gov

LINK: map showing how to drive to our office

King County Industrial Waste Program

The King County Industrial Waste Program (KCIW) administers regulations that allow it to give approval to discharge industrial wastewater to the King County sewer system.

Industrial Pretreatment Newsletter 
The winter 2014 newsletter is now available. (View recent issues of the newsletter, published in the spring/summer, fall and winter.)

KCIW’s general fact sheet: Discharging industrial wastewater to the King County sewer system 
KCIW’s general fact sheet: Discharging industrial wastewater to the King County sewer system (PDF)


Our regulations
are designed to prevent businesses from discharging substances that can degrade the wastewater treatment process, harm workers or facilities, or impact water quality. Since 1969, the KCIW has required many industries to pretreat wastewater before discharging it into the sewer.

Biosolids Metals Chart 2012
By working together, we can help King County recover and recycle beneficial resources, like biosolids, from the wastewater treatment process.