This report presents national, state and territory data on publicly funded alcohol and other drug treatment services and their clients, including information about the types of drug problems for which treatment is sought and the types of treatment provided. This is the fourth report in the series of annual publications on the Alcohol and Other Drug Treatment Services National Minimum Data Set (AODTS-NMDS). This report, along with others in the Drug Treatment Series, is useful for policy-makers, planners, researchers and the broader community.