The machine, at the corner of Beaufort and Clarence streets, offers refrigerated, micro-filtered still and sparkling water for people to refill their drink bottles or glasses.
It costs 40 cents per litre.
It is the second machine in the City, with the first installed at Beatty Park in 2013.
ProAcqua chief executive Joe Muscara said the machines aimed to help reduce the use and wastage of plastic water bottles.
‘By reusing and refilling their bottles, or better yet using stainless steel bottles, people won’t just be helping their hip pocket, they’ll be significantly reducing landfill and helping eliminate one of the biggest killers of our marine life,’ he said.