In New South Wales in 2009-10, 258 government-funded alcohol and other drug treatment agencies and outlets provided 35,202 treatment episodes. This was an increase of eight treatment agencies and 309 episodes compared to 2008-09. Alcohol was the most common principal drug of concern, rising from 51% of episodes in 2008-09 to 54% in 2009-10. Cannabis accounted for 18% and heroin for 10% of episodes. The proportion of amphetamine-related episodes fell slightly from 9% to 7%. Counselling was the most common form of main treatment provided (34% of episodes), followed by withdrawal management (20%) and assessment only (16%).