King County Industrial Waste program
Working cooperatively with businesses to protect people, the environment, and the economy since 1969
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.
Getting authorization to discharge to the King County sewer system.
- Learn more about getting authorization for your business sector
- Download application forms
- Requirements for discharging wastewater
Managing your permit/authorization
Rewards and recognition
- Wastewater Treatment Division