Warrnambool's AquaZone will close its pools for three days over the school holidays for extra works just weeks after it reopened following a $1 million upgrade.
The city council said a few people had slipped over on the new non-slip surface and works would be carried to make it more "grippy".
The indoor pools, creche and cycle room will be closed from Wednesday to Friday this week while repairs take place.
Mayor Tony Herbert said there were some areas of the new non-slip surface that "didn't take as well" as they should have during the renovations, and they needed to be repaired.
A statement from council said there were a few patches which were not as "grippy" as they would like.
"This is a flooring application used with success at other public pools but we need to make sure we are getting the best possible results with it," a spokesman said.
"A few people have slipped over and while that's not uncommon at a pool, particularly with excited children, we want to eliminate the flooring as a possible contributing factor."
The council said that the cost of the repair works would be negotiated and shared between the council and the contractor.
The gym is expected to operate as normal during the works, and the pools will reopen on Saturday.
During July and August, the pool underwent a $985,000 upgrade where the pools were closed to the public and drained to allow for the installation of new air handling and water treatment systems.
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