Christchurch City Council has added the pool to the list of facilities inside the new 4000 sq m multi-use community centre under construction at Kyle Park in Hornby.
"There's an ongoing need for therapeutic warm-water pools in Christchurch, particularly in the city's west.
"At the moment, the nearest public facilities are in Rolleston and at Taiora QEII."
He said the council will contribute $2.5 million to the cost of the pool and the other $1.4 million will come from fundraising by the Rotary Club of Hornby and Greater Hornby Residents’ Association.
Both groups are determined to reach the goal and the council will "back them 100 per cent", Cox said.
"Like all the best community projects, delivering a hydrotherapy pool for Hornby will be a real group effort.
"Having a shared fundraising goal will help connect the community to the new Hornby Centre and build a sense of belonging and ownership."
Rotary Club of Hornby head of projects Paul Burns said various fundraising initiatives are planned.
The groups have launched a website to share their progress.
"We have started planning for a local business fundraiser and local community fundraisers. It is a great chance for everyone to play their part for their area and get behind a once in a generation project of this scale," Burns said.
"A warm water pool environment can provide benefit to anyone, including those wanting to increase their fitness, reduce pain with movement in a low impact environment, or generally improve their sense of wellbeing through the relaxing benefits of warm water,” said Duff.