Container deposit legislation (CDL), also known as a container deposit scheme (CDS), is a scheme that was first implemented in South Australia in 1977 and over the decades has spread to the Northern Territory in 2012, New South Wales in 2017, the Australian Capital Territory in June 2018, Queensland in November 2018 and Western Australia in October 2020. Schemes in the remaining states of Tasmania and Victoria are due to commence in 2023.