About 700 agencies provide treatment for alcohol and other drug issues in Australia, and three-quarters of these agencies are in New South Wales, Victoria and Queensland. Most of the closed episodes provided in 2010-11 were for clients receiving treatment for their own drug use, and alcohol was the most common principal drug of concern in most states and territories. Counselling was the most common main treatment type in New South Wales, Victoria, Western Australia, South Australia and Tasmania, and was the second most common main treatment in the remaining state and territories.