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Contaminated sites can harm the environment, contribute to blight and hinder economic development. A Brownfield site is defined by the U.S. Environmental Protection Agency as "real property, the expansion, redevelopment or reuse of which may be complicated by the presence or potential presence of a hazardous substance, pollutant or contaminant."

The King County Brownfields Program provides assistance to qualified private individuals and businesses, nonprofit organizations, and municipalities within King County to assess and clean up contaminated sites, or Brownfields.

Types of assistance

Who is eligible?

  • Private individuals and businesses
  • Nonprofit organizations
  • Municipalities

Request assistance

Do you know of a site that might need assessment? Request assistance via e-mail.

Download the Brownfields Program Brochure Download PDF 1 MB
Contact Us

 Call: 206-477-4466

TTY Relay: 711

Fax: 206-296-0197