AbstractIn this article, the organization of services for the treatment of women with dual disorders in Fresno County, California is discussed. The collaboration between the Mental Health Department, with its system of services for persons with chronic mental illness, and the Substance Abuse Division of the County Mental Heallh Department, which provides perinatal treatment and recovery services, is described. The philosophy of treatment and a description of the services provided in Fresno County are addressed in addition to future directions in the treatment of dual diagnosis disorders.