A pump failure about three weeks ago had forced the pool to close.
A replacement pump had been installed and staff were now working to raise the temperature of the water and attend to water quality, Mr Allan said.
The pool temperature at noon yesterday was 22degC and it was expected to take until Friday to reach 28degC.
New insulating pool covers were recently installed, which meant the temperature did not plummet as much as expected during the closure.
The pool was built by a community trust and opened in October 1992, but has long been considered past its use-by date.
It will close this winter for about $300,000 worth of maintenance and repairs from July 12 until August 30.
Plans have been drawn up for an $11.5 million aquatic centre but last year the swimming public's hopes were dashed when the Queenstown Lakes District Council decided it could not afford a new aquatic centre and dropped it from the 10-year community plan.
While the QLDC says it will set aside space for a new aquatic centre in proposals for a new sports stadium at a yet-to-be-determined site, there are still strong calls for a stand-alone pool to be built at Kelly's Flat, near Wanaka's three schools.
