The ATDC was formed in 2001 after a group of AOD sector service providers considered the benefits of establishing a collective voice for the sector. Shortly after in 2002 the organisation was incorporated and the first Executive Committee was appointed.
Although initially the ATDC had no funding the Committee secured a one off grant from the Federal Government in 2004 which enabled the appointment of the first Executive Officer. In that same year an office was established in Hobart with the support of the Tasmanian Council of Social Service (TasCOSS).
In 2005 the Executive Committee evolved into an eight member Board of Management and it was at this time that the Tasmanian Department of Health and Human Services (DHHS) through the Alcohol and Drug Service (ADS) first provided financial support to the ATDC via a service agreement.
Over subsequent years the ATDC was successful in obtaining project and program funding to commence work in areas such as Quality Improvement, Clinical Supervision, Alcohol Education and Training, and the Comorbidity Sector Development project.
In 2008 the ATDC convened the first ATDC Conference which later became a biennial event with conferences held in 2010, 2012, 2014 and 2016.
Throughout its history the ATDC has formed and maintained strong working relationships with multiple stakeholder bodies including peer bodies in other states and territories.