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In order to dispose at the South Plant facility, a disposal permit needs to be obtained from the DNRP Septage Disposal Program. The criteria for obtaining a disposal permit includes:

1. Obtain a Valid Pumper Certification from Public Health Seattle and King County.

  • Application information can be obtained from:

    Doug Jones, Community Environmental Health Officer
    (206) 477-8065
    doug.jones@kingcounty.gov
    14350 Southeast Eastgate Way,
    Bellevue, WA, 98007-6458

  • *Note: Vactor-type trucks, used for sewer cleaning, are required to obtain Pumper Certification from Public Health – Seattle and King County.

2. Submit to the Septage Disposal Program Coordinator: 

  • Proof of King County required liability coverage with the following minimum requirements:
    • Automobile liability of $1,000,000 per occurrence.
    • Each policy shall include King County, its officers, officials, employees and agents as additional insured.
  • A signed copy of the disposal site permit.

For more information about the DNRP Septage Disposal Program, please contact:

Chris Tinnin,
Building and Grounds Coordinator & Septage Supervisor:
 (206) 263-1821
 chris.tinnin@kingcounty.gov

Please review permit conditions

It is essential that haulers understand the differences between:

According to King County Code 28.84.050, and the conditions contained in the required permit for disposal at the King County South Treatment Plant septage facility in Renton, the following items are accepted (see definitions here):

  • Domestic Septage 
  • Chemical Toilet Waste
  • Cesspool Waste
  • Privy Contents
  • Liquid waste collected from the collection system that serves the South, West Point, Carnation or Brightwater treatment plants.
  • Commercial Wastes that have been pre-approved.

King County reserves the right to refuse waste suspected of not meeting its standards.

Pre-approval is NOT required for domestic septage disposal

To protect the environment, our treatment plant and the quality of the valuable resources leaving our treatment plant King County is now requiring that businesses, commercial facilities, and industries sending septage to the county's facility have approval to do so.

However, businesses that do not need an approval number are places where the only wastewater from the facility is from restrooms or kitchens. These types of businesses can be pumped and discharged at South Treatment Plant without having to contact King County Industrial Waste for an approval number.

You must record the business name, address, phone number, business type, and estimated volume pumped on the King County Hauled Waste Certification form. Write NA under approval number heading.

Pre-approval is REQUIRED for non-domestic septage disposal

To protect the environment, our treatment plant, and the quality of the valuable resources leaving our treatment plant King County is now requiring that businesses, commercial facilities, and industries sending septage to the county's facility have approval to do so.

Businesses or sites that need an approval number may have the potential to discharge wastewater that contains metals or other chemicals that are not normally found in domestic septage (for example silver from x-ray machines found in medical offices, inks from print shops, or solvents from furniture makers/restorers).

You must have the business supply you with their King County Industrial Waste Approval Number. Record the business name, address, phone number, business type, estimated volume pumped and approval number on the King County Hauled Waste Certification form.

Typical businesses that need an approval in order to dispose their septage at King County include:
  • Auto repair shops, auto-body shops
  • Beauty salons
  • Beverage makers (wineries, breweries, sodas)
  • Construction Sites
  • Dry Cleaners, commercial laundries (hospital, uniforms, linens)
  • Food Processors (seafood, dairies, meats)
  • Furniture makers, furniture restorers
  • Groundwater dewatering wells
  • Laboratories
  • Machine shops, metal fabricators
  • Medical offices (dental, medical, chiropractic and veterinary)
  • Mortuaries
  • Photo processing labs including the "one-hour minilabs
  • Print shops (printers, screen printers)
  • Schools (junior/senior high, vocational)
  • Shopping malls, warehouse complexes, business parks

King County may revoke this disposal permit for:

  • Non payment of disposal or renewal fees
  • Disposal of hazardous waste
  • Disposal of commercial waste that is not domestic in nature without prior approval from KCIW
  • Inappropriate use of the disposal facility
  • Not cleaning up spills at the disposal site