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For more information about the DNRP Septage Disposal Program, please contact Chris Tinnin, Septage Coordinator

Wastewater Treatment Division 
South Plant Treatment Facility
1200 Monster Road S.W.
Renton, WA 98057

Get Directions to our plant location in Renton, Washington

Permit form

You can download and view documents (PDF files) using a PDF Reader.

  • 2012 Annual Septage Disposal Permit  (DOC,  PDF)
    This document is required before allowing any disposal at the South Plant Septage Facility.

The following documents can be found at the King County Industrial Waste Program internet page for commercial septage.

  • King County Hauled Waste Guidelines (Hauled Waste Certification Form on page 2 of Guidelines)
  • Industrial Waste Program Septage Acceptance Application
  • Fact Sheet: Sending commercial septage to King County's South Treatment Plant.  How businesses and commercial facilities apply for approval (April 2009)