Residents of Urapanga, a remote Indigenous community 600 kilometres southwest of Darwin, have cut consumption of sugary drinks by 43 per cent in the past year.

Urapunga Aboriginal Corporation board member Antonella Pascoe said the community was drinking too much sugar, so a plan was hatched to turn things around.

The store achieved this by limiting the size of soft drinks and implementing sugar-free Wednesdays.

"As directors of the store, we felt like we could make a positive change," Ms Pascoe said.

"We know that the community is now drinking less sugar.

"One of the best things is the way it has made the community think about what they are drinking, even on days when they can buy sugary drinks."

Urapanga Store manager Brendan Turner said while the restriction frustrated some, a conversation had been started about sugar consumption.

"More people are choosing sugar-free options the rest of the week, after first trying them on Wednesday," he said.

"So even though it's just one day, the effect of Wednesday is carried through to every day."

Outback Stores area manager Wayne Martin said restricting confectionery, ice cream and table sugar sales were now being considered.

"We can propose different measures to stores, but ultimately it's the store directors who choose what they'd like to implement in their community," he said.

Over the past decade the proportion of full-sugar drinks being sold has dropped 34 per cent across stores serviced by Outback Stores. Water sales have increased 131 per cent.