The reheating of Baywave's pools is expected to begin in less than a week.
The bore system at the Mount Maunganui pools was shut down after it was unable to maintain consistent water temperatures for all pools.
Bay Venues project manager Justine Brennan said investigation into the bore issue had now been completed and work to implement the remediation plan will begin today.
The plan will involve re-casing the reinjection bore and partially re-casing the production bore.
Problems with the bore system, which provides heating to the pools at Baywave, were identified on May 13.