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August 2019
Commercial Organic Materials Characterization Download PDF , 775 K
This report summarizes the organic materials coming from commercial businesses across King County, except for those from the City of Seattle. The County aims to better understand the incoming loads and Material Recovery Facilities (MRFs) that process recoverable material—including organic materials as well as single-stream curbside recyclables—from residential and commercial sources in King County.

December 2018
Waste Monitoring Program: 2018 Customer Satisfaction Surveys Final ReportDownload PDF , 475 K
This report summarizes the results of the 2018 self-haul and commercial customer satisfaction survey conducted at nine of the ten King County solid waste disposal facilities in March and June of 2018. Customers rated each facility in terms of layout, available services and ease of use.

October 2018
2018 King County Curbside Characterization Report Download PDF 1.25 MB
In 2017, the King County Solid Waste Division (SWD) contracted with Cascadia Consulting Group, Inc. (Cascadia) to complete 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. The study design ensured that the organics results would be comparable to previous organics composition studies from 2009-2014 and provides additional metrics to track progress towards waste diversion goals.

September 2017
2017 King County Targeted Business Characterization Report Download PDF 2 MB
This targeted business characterization study estimates the quantity of food waste being disposed by the commercial sector in King County’s service area and further estimates the proportion of disposed food that is edible. These results will inform the County’s recycling policies and help determine next steps to prevent and reduce food waste.

January 2017
2016 Transfer Station Customer Survey Download PDF 1.2 MB
This survey provides King County with data on how self-haul customers obtain information about recycling services offered at King County Solid Waste Division facilities, the clarity of recycling signs and directions at these facilities, and the level of satisfaction with customer service at the scale house and on the tipping floor pertaining to recycling services.

September 2016
2015 King County Waste Characterization and Customer Survey ReportDownload PDF , 2 MB
Waste characterization studies analyze the waste stream by collecting and sorting samples of loads from customers bringing materials to facilities in King County.

April 2015
2015 Organics Characterization ReportDownload PDF , 1 MB
Characterization study of the single-family organics collection program as part of the county's ongoing waste monitoring program.

February 2015
Waste Monitoring Program: 2015 Market Assessment for Recyclable MaterialsDownload PDF , 400 K
This study assesses markets for recoverable materials generated in the county focusing on curbside materials, organics and construction and demolition waste.

February 2015
Waste Monitoring Program: 2014 Customer Satisfaction Surveys Final ReportDownload PDF , 400 K
This report summarizes the results of the 2014 self-haul and commercial customer satisfaction survey conducted at nine of King County’s solid waste disposal facilities in June and July of 2014.

October 2012
2011 King County Waste Characterization and Customer Survey ReportDownload PDF , 3.3 MB
Waste characterization studies analyze the waste stream by collecting and sorting samples of loads from customers bringing materials to facilities in King County.

June 2012
2012 Organics Characterization ReportDownload PDF , 1 MB
Characterization study of the single-family organics collection program as part of the county's ongoing waste monitoring program.

December 2009
2009 organics characterization studyDownload PDF , 355 K
In 2009, King County conducted a countywide composition study of the curbside organic service as part of its ongoing waste monitoring program. The study estimated the proportion of subscribers putting a cart out for collection, the proportion of carts that contain food, and the average quantity of food scraps set out by each participating household, as well as characterized the contents of the carts.

February 2009
Waste Monitoring Program: 2007/2008 Construction and Demolition Materials Characterization StudyDownload PDF , 1.6 MB
King County Solid Waste Division requires detailed information on the sources and composition of the construction and demolition (C&D) material stream to plan and design targeted C&D material prevention and recycling programs. In response to these information needs, the county commissioned this study of the C&D material stream.

April 2009
Waste Monitoring Program: 2008 Transfer Station Customer Surveys, with appendicesDownload PDF , 430 K
These surveys provide King County with answers to crucial questions such as where the waste comes from, how to increase recycling, and why and how often people visit a transfer station. They also help the County understand and track its customers and provide effective service.

December 2008
Waste Monitoring Program: 2008 Customer Satisfaction Surveys, Final ReportDownload PDF , 211 K
This report summarizes the results of the 2008 self-haul and commercial customer satisfaction survey conducted at ten of King County's solid waste disposal facilities in August and September of 2008.

October 2008
2007 Waste Characterization StudyDownload PDF , 401 K
2007 Waste Characterization Study AppendicesDownload PDF , 413 K
Waste characterization studies analyze the waste stream by collecting and sorting samples of loads from customers bringing materials to facilities in King County.

March 2008
2007 Waste Reduction and Recycling SurveyDownload PDF , 622 K
The goal of this study is to track changes in behavior and attitudes about household waste disposal, recycling, and waste reduction among King County residents.

March 2007
2006 Transfer Station Customer SurveysDownload PDF , 300 K
2006 Transfer Station Customer Survey AppendicesDownload PDF , 134 K
The Transfer Station Customer Survey provides King County with answers to crucial questions such as where the waste comes from, how to increase recycling, and why and how often people visit a Transfer Station. These surveys help the County understand and track its customers and provide effective service.

November 2006
2006 Material Recovery Facility (MRF) AssessmentDownload PDF , 384 K
This assessment quantifies and characterizes the commingled material delivered to four Puget Sound Area MRF's from residential and commercial sources, as well as the material that comes out of the MRF's as product or as residual.

2006
2006 Customer Satisfaction SurveyDownload PDF , 126 K
This report summarizes the results of a 2006 customer satisfaction survey of self-haulers and commercial customers at nine of King County's solid waste disposal facilities.

2006
2006 Transfer Station Recycling SurveyDownload PDF , 84 K
The main objective of this survey was to better understand why self-haul customers bring recyclables to County facilities instead of using other options, such as curbside collection and private recycling facilities.

2006
2006 Market Assessment for Recyclable Materials - Final ReportDownload PDF , 587 K

2006
2006 Market Assessment for Recyclable Materials - Executive SummaryDownload PDF , 66 K

April 2005
2005 Waste Reduction and Recycling SurveyDownload PDF , 407 K
The goal of this study is to track changes in behavior and attitudes about household waste disposal, recycling, and waste reduction among King County residents.

2004
Market Assessment of Construction and Demolition Waste MaterialsDownload PDF , 242 K

2004
Market Assessment for Recyclable Materials in King CountyDownload PDF , 569 K

2003
Solid Waste Collection Practices in King County Download PDF , 515 K

2003
Residential Waste Reduction and Recycling SurveyDownload PDF , 477 K

2002 – 2003
Waste Characterization and Customer SurveyDownload PDF , 2.2 K

September 2002
Summary Report of the 2001 Survey of Washington State's Recycling IndustryDownload PDF , 553 K
Results of the 2001 Survey of Recycled Material Collectors and Haulers, Transporters, Processors, and Re-Manufacturers.

2002
Customer Satisfaction SurveyDownload PDF , 137 K

2002
Waste Monitoring ReportDownload PDF , 272 K

2002
Construction and Demolition Waste Characterization and Recycling Industry Profile Final ReportDownload PDF , 1.8 K

2002
Construction and Demolition Waste Characterization and Recycling Industry Profile Final Report - AppendiciesDownload PDF , 409 K

1998
Assessment of Markets for King County Recyclable MaterialsDownload PDF , 490 K
This report presents key findings and recommendations from a three-month study of markets for recyclable commodities collected through residential, commercial and self haul recycling in King County.

2017 King County Targeted Business Characterization Report (PDF)
This reportDownload PDF , 2 MB estimates the quantity of food waste being disposed by the commercial sector in King County’s service area and the proportion of disposed food that is edible.
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 Call: 206-477-4466

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Fax: 206-296-0197

King County Solid Waste Division mission: Waste Prevention, Resource Recovery, Waste Disposal