The pool has undergone a $1.5 million upgrade across the past eight months.

Changes include adding an accessibility ramp, modification of pool depths to make it a maximum of two metres and a minimum of 1.1 metres, improved filtration, and removal of hobs around the pool.

Horsham Aquatic Centre director Mark Myer said the pool would open on December 7, with free entry on that day.

"There will be a pool party the following weekend," he said.

Horsham Rural City Council infrastructure director John Martin said the pool would take about five days to fill with water.

"A period of one week has been allowed for to ensure that commissioning of the upgraded pool runs smoothly, and at this stage we anticipate the public opening can happen by the end of the first week of December," he said.

READ MORE: Making a splash | Horsham Historical Society

Sport and Recreation Victoria contributed $200,000 towards the project for the inclusion of the wet deck around the outside of the pool.

"The wet deck surrounding is the seamless edge to the pool that has replaced the older style of guttering system. It is slip resistant and makes entering the water easier," Mr Martin said.

Returned soldiers built the 50-metre outdoor pool in 1956 and it was incorporated into the Horsham Aquatic Centre development in 2006.

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