In Washington, 353 substance abuse treatment facilities responded to the 2004 N-SSATS, reporting that there were 34,839 clients in substance abuse treatment on March 31, 2004. The survey response rate in Washington was 96%.

In Washington, 76% of the facilities surveyed focused primarily on substance abuse treatment services.

In Washington, 96% of the substance abuse problems being treated pertained to both alcohol and drug abuse.

In Washington, 79% of the substance abuse problems being treated pertained to drug abuse only.

In Washington, 87% of the substance abuse problems being treated pertained to alcohol abuse only.

In Washington, 90% of the substance abuse treatment being received was from outpatient care.

In Washington, 15% of the substance abuse treatment being received was from residential care.