Washington State Department of Social and Health Services

Research & Data Analysis Division



Project identifier: Profile of Substance Use and Need for Treatment Services - Washington State Needs Assessment Household Survey

This series of reports provides detailed estimates of substance use, the need for substance abuse treatment, and use of substance abuse treatment services for each of Washington's 39 counties. These reports update a previous set of reports produced in 1999 based on 1993-94 survey data.

Each county profile provides estimates of:

  • Lifetime, past year, and 30-day substance use by type of substance
  • Need for substance abuse treatment both countywide and by demographic subgroup
  • Treatment penetration rates both countywide and by demographic subgroup

More information can also be found in the Supplemental Data Â»

The Washington State Needs Assessment Household Survey (WANAHS)

The WANAHS was a statewide survey of 6,713 adults designed to measure the prevalence of substance use and the need for substance abuse treatment. Data were collected from February 2003 through February 2004. Funding was provided by a grant from the Federal Center for Substance Abuse Treatment. The Washington State Department of Social and Health Services (DSHS) Research and Data Analysis (RDA) section conducted the project on behalf of the DSHS Division of Alcohol and Substance Abuse (DASA). Telephone interviewing was conducted by Washington State University's Social and Economic Sciences Research Center. The survey achieved a response rate of 50 percent and a cooperation rate of 69 percent.

The WANAHS over sampled minorities and lower-income populations in order to facilitate demographic analyses. The WANAHS sample was weighted to U.S. Census data to provide direct statewide estimates of substance use and the need for substance abuse treatment services. Further details about survey methods are included in a forthcoming state report.

Clickable map - Download County Reports

Map of counties in Washington State San Juan Clallam Jefferson Gray Harbor Pacific Whatcom Skagit Snohomish King Pierce Lewis Cowlitz Clark Wahkiakum Skamania Klickitat Yakima Benton Walla Walla Columbia Garfield Asotin Whitman Franklin Kittitas Grant Adams Chelan Douglas Lincoln Spokane Pend Oreille Stevens Ferry Okanogan Mason Thurston Kitsap Island