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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

Industrial wastewater discharge approvals

Discharging dental wastewater to the King County sewage system

Dental practices that discharge mercury into the King County sewage system must be in compliance with the county discharge limits for mercury.

Mercury in King County Biosolids  Has the installation of Amalgam Separator Units in King County made a difference?

To demonstrate compliance with these regulations, a dental office can install an approved amalgam separator unit or sample its wastewater and apply to our program for a permit to discharge. Our program also conducts compliance inspections at dental offices on an ongoing basis.

Learn how the installation of amalgam separators in King County has made a difference (PDF 69KB).  KCIW wants to help dentists to continue to join with us in keeping harmful pollutants out of the environment. The program has prepared a fact sheet and offers other technical assistance for dental practices.

Download: The Dental Wastewater Discharge Permit Application and instructions.

Update your practice's contact information:

Is yours a new dental office - or have you recently relocated your office within King County? Please contact KCIW (see Contact below left) and provide the following information: name, name of practice, address, phone and business e-mail.
View the Fact sheet: Discharging Dental Wastewater into the King County Sewer System (PDF 1966KB)

Download: The Dental Wastewater Discharge Permit Application and instructions. Note: it is very important that you discuss your practice with the Industrial Waste Program before developing a permit application. (See Contacts, left.)