Plastic supermarket bags bannedSouth Australia was the first Australian state to ban lightweight plastic supermarket bags, phasing in the new laws from 1 January to 4 May, 2009. The ban aimed to reduce the more than four billion plastic checkout bags Australians used each year. The Northern Territory and the Australian Capital Territory introduced similar bans in 2011. At the time of the South Australian ban, China, Bhutan, Bangladesh and Rwanda had already banned light weight plastic bags.