But the group's CEO, Rebecca Davey, says she is relieved there is now a solid commitment from both sides of politics.

Labor on Tuesday announced it would build a new pool in Tuggeranong if re-elected in October.

It came a day after the Canberra Liberals said they would partner with the John James Foundation and MS Australia by contributing $5 million for a hydrotherapy pool for the new ACT Wellness Centre due to be built in Deakin.

Arthritis ACT has been campaigning for a new pool in the territory's south since the government announced it was closing the one at Canberra Hospital.

The government previously promised the new Stromlo pool would have a hydrotherapy pool, but it later emerged it was not warm enough to be classified as one.

Ms Davey said there was enough demand in the south of Canberra for both proposed pools.

She said people would still be going without the therapy in the years it will take a new pool to be built.

The private pools being used as a "stop gap" were not a suitable depth for many clients, and too difficult for some people to get into, Ms Davey said.

"It is disappointing it takes an election but that's what we work with," she said.

"Thank goodness at least we have commitments."

Labor said its pool would cost about $3.2 million as well as $250,000 for a feasibility study.

The Lakeside Leisure Centre facility in the Tuggeranong is the preferred site for the pool, while Erindale pool has been identified as an alternative location.

It came as Labor announced one of its promised five new walk-in centres will be co-located at an existing general practice - the National Health Co-Op in Coombs.

The new facility would focus on maternal and child health by offering a range of maternity health services such as pre-natal checkups, and would cost about $700,000 to establish.

"The new centre will help Canberra Health Services test a model of working alongside general practice and free up space at the Weston Creek Walk-In Centre for a new medical imaging service," Chief Minister Andrew Barr said.

Health Minister Rachel Stephen-Smith on Tuesday clarified the five new walk-in centres promised this week would generally cost between $10 and $20 million to build.

However some that are located in existing buildings, like the centre in Coombs, would cost significantly less.

On Monday, she would not reveal costings but said each centre wold cost between $2.5 to $5 million.