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The process of disposing of septage at our treatment facility at South Treatment plant is pretty simple. We have trucks weigh in before dumping a load and weigh out before leaving the facility. If you’re disposing of domestic or non-domestic septage from a commercial source, you must record the estimated volume pumped from the source on the King County Hauled Waste Certification Form prior to dumping a load. 

Here are some of our facility’s amenities: