South Australia set to ban single-use plastics statewide

South Australia is set to become the first state in Australia to ban single-use plastics entirely after a trial provided positive results.

The state government confirmed it would introduce legislation to ban such goods in coming months.

Adelaide Lord Mayor Sandy Verschoor said the trial had been a great success, including in the city's Central Market.

"There are over nine million people a year coming through, if we can reduce the plastics it will have huge impacts for our waste management for the city," she said.

Market traders who have already made the transition say it does come with a cost.

"There is initial outlay, something like a compostable bag, it does cost about four times a normal one," one health food store owner said.

But overall, it has boosted business.

"Customers are crying out for it, it's not only a decision for the environment, it's obviously a business decision as well."

Shoppers were divided over plans for a statewide ban, with concerns it could hit their hip pocket.

But environment minister David Speirs said there were incentives such as grants to lessen the blow to consumers.

"The results are now in," he said.

"It was overwhelming - people want South Australia to push the boundaries and play a leadership role in phasing out single use plastics."