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Natural Resources and Parks

King County, Washington

For questions about King County Natural Resources and Parks website, please contact Fred Bentler, webmaster.

Nov. 22, 2011

Help protect your pipes – and save money - by recycling used cooking oil and fats

Partnerships offer safe, easy disposal and recycling of unwanted cooking fats

GeneralBioDieselLogo King County logoWondering what to do with the leftover fryer oil and kitchen grease after the big holiday feast? Don’t pour it down the drain – grease sticks to the inside of sewer pipes and can build up to such a point that it blocks the entire pipe, leading to expensive and unpleasant clean-ups.

The King County Department of Natural Resources and Parks has partnered with General Biodiesel to provide residents with a safe, environmentally-friendly way to dispose of used cooking oil and grease so it can be recycled instead of ending up in landfills or drains.

During the holiday season, General Biodiesel will provide several convenient drop-off locations throughout King County where people can bring their unwanted cooking fats and grease. Locations are open 24/7, and there is no minimum amount. For a complete list of drop-off locations, visit

To ensure safe and secure transport and disposal of your fats and grease, King County and General Biodiesel suggest putting the cooled material from fryers, pots or pans in a sealed container.

At the disposal tank, slowly pour the grease into the collection container to avoid splatter and mess. Be sure to close the community collection tank lid when you’re finished. Take your own containers home and leave nothing behind but the oil you deposited.

More information on keeping our sewers “fat-free” is available at or by calling 206-684-1280 or 711 TTY.

Note to editors and reporters: Visit the WTD Newsroom, a portal to information for the news media about the Wastewater Treatment Division, King County Department of Natural Resources and Parks:


General Biodiesel is a Seattle-based enterprise that processes and refines regionally generated used cooking oil, grease, and renderings in to EPA-registered road-use biodiesel. Local waste stream, creating local green economy jobs, producing low-carbon fuel for local use. Learn more about General Biodiesel at

People enjoy clean water and a healthy environment because of King County's wastewater treatment program. The county’s Wastewater Treatment Division protects public health, the environment and the economy by serving 17 cities, 17 local sewer districts and more than 1.5 million residents in King, Snohomish and Pierce counties. Formerly called Metro, the regional clean-water agency now operated by King County has been preventing water pollution for nearly 50 years.