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Many King County facilities are closed to the public, and many services are being offered remotely. Learn more about changes and cancellations.  
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We administer regulations to make sure the wastewater generated by industries is treated properly. Many industries must pretreat wastewater before sending it to the sewer. This protects the wastewater treatment process, workers, facilities, and water quality.

And it works. Our waterways are cleaner today than in previous decades because business practices have improved.

Industrial Users: click here to learn about
your responsibilities and requirements
during the COVID-19 Pandemic.

KCIW is revising rules that govern its work.
Click here for more information.

Learn more about the Industrial Waste Program

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206-477-5300

206-263-3001