Get In Touch
Loop Soil | Contact Form
Helpful Information
General Loop Information
King County Wastewater Treatment Division
Resource Recovery Section – Biosolids
206-477-5557
Email Us
See How Loop is Made
Visit one of King County’s treatment plants
Register for upcoming events and tours
How’s our driving?
For feedback about our trucks
Provide truck number and time
(800) REPORT-9
General Biosolids Information
Douglas County
Boulder Park Inc.
509-683-1142
Yakima and Neighboring Counties
Natural Selection Farms
509-837-3501
Email Natural Selection Farms