"There have been some concerns over the financial viability and one of the most concerning things was that in July we spent the entire annual maintenance budget in the one month," Mr Wimsett said.
"The reason I am expressing concern now is that the trust still has time to recover the situation. But we need the support of the community as the complex heads into its 20th anniversary in December."
And with the pool plant, bought second-hand from the Lido in Palmerston North, now more than 20 years old, maintenance was draining the trust's budget.
"But it's worse than that," Mr Wimsett said.
"When you have maintenance issues, the flow-on is a reducing customer base, but with higher worker and heating charges, it's been a challenge for the trust in the past 18 months."
The Tararua District Council provides funding for AMP Wai Splash which is run by the trust, headed by Brian Beale, who is working closely with council on plans to tackle the complex's financial viability.
Mr Wimsett, who works with the trust in his own time, outside of his council work hours, said getting the staffing roster right at the pools would help.
"The 1pm to 3pm timeframe sees little use of the complex, so we've addressed the staffing roster accordingly.
"We're now working on an eight-point plan to help the struggling finance situation," he said.
"We're looking for sponsorship, entrance fees at the pool increased on Sunday, and we've applied for and been successful in getting operational funding.
"If our plans come together we will head off the cash-flow problems."
Mr Wimsett said on average entrance fees had increased by just 50 cents, but he accepted some people would find the increase challenging.
"We are still competitive and aren't the most expensive pool in the region," he said.
Councillor Andy Thompson asked whether cost control came into the eight-point plan.
Mr Wimsett said the trust was starting to address the costs.
"We've already attacked power prices and we've knocked $8000 off our insurance costs," he said.
Councillor Jim Crispin said Wai Splash had been "a hell of a good asset", but expensive to run.
"I don't want to see it in a position where we (council) don't support it. We must support it and look after it."
But Mr Crispin warned that if a similar complex was built in Pahiatua, they could expect similar problems.
Ernie Christison said the pools were a valuable asset.
"We've probably had our money's worth out of the assets," he said.
Mr Thompson asked if there was a plan for a capital upgrade at the pool.
Mr Wimsett said the trust had been steadily replacing plant and in the past 12 months the water-treatment system had been upgraded, but there was more work to be done.
"The current toilets are not designed for wheelchair access and our fire alarm system is a very low standard and our emergency lighting didn't provide enough light for people to escape, so I've had to install temporary lighting in the meantime," he said.