The Washington State Department of Ecology commissioned a four-season municipal solid waste (MSW) characterization study in 2020-2021. Read More

In 2019, King County conducted a year-long waste characterization study and customer surveys at its disposal facilities as part of the Waste Monitoring Program. This research included data collection across all four seasons across throughout county. Read More

As part of King County’s Waste Monitoring Program in 2019, Cascadia Consulting Group conducted a characterization study focused on the organic materials coming from commercial businesses across King County, except for those from the City of Seattle. . This document describes the methods and outcomes of this materials characterization study of incoming commercial organics loads destined for organics processing. Read More

In 2017, the King County Solid Waste Division (SWD) completed a comprehensive characterization study of the single-family curbside collection program as part of the County's ongoing waste monitoring program. The study sought to understand residential composition and contamination, and generation rates, participation rates, and capture rates for the portion of the single-family population with curbside collection. Read More

The Washington State Department of Ecology commissioned a four-season municipal solid waste (MSW) characterization study during 2015-2016. Read More