For questions about the Wastewater Treatment Division website, please send an e-mail message or contact us at:
King Street Center
201 S. Jackson St., Suite 500
Seattle, WA 98104-3855
Telecommunication device for the deaf (TTY): 711
Get Directions to our office location in Seattle, Washington.
What happens during a King County project? How is the public involved? Learn more by clicking on a specific "phase" on the banner above or the links below.
System planning | Project planning | Project design | Project construction | Facility operations
View more photos (external link, Flickr).
Community Engagement Guide
King County has developed a Community Engagement Guide to promote effective engagement and customer service with all county communities. This guide builds on the county's Strategic Plan as well as the Equity and Social Justice Ordinance.