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Wastewater discharge authorization for metal finishing businesses

The King County Industrial Waste Program (KCIW) issues waste discharge permits to metal finishing facilities that discharge wastewater to the King County sewage system.

Metal finishers are one of the largest industrial business sectors that we regulate, next to food processing. We work with metal finishers to ensure that discharges from these operations meet federal categorical pretreatment standards and the county's local limits for pollutants to protect human health, the environment, and the public's investment in wastewater facilities. Visit the Enivronmental Protection Agencies website to learn more about the EPA Metal Finishing Effluent Guidelines.

How to get formal authorization