THE State Member for Hervey Bay is concerned the council and Wide Bay Water do not have a plan for the region's growth.
Former Hervey Bay Mayor Ted Sorensen said he was disappointed there was no policy.
"It's a little bit disappointing that the council has no growth policy with the water infrastructure," he said.
"Water is a vital thing and you've got to plan for the future, you don't just turn the taps on."
Mr Sorensen said improving the region's water infrastructure was a priority in the lead-up to the next State Election.
"We've got to get it (infrastructure) somewhere, we've got to put pipelines in somewhere ... (to) make sure we do have a future and a future water supply."
But Wide Bay Water chief executive officer Peter Care said the region would need to find more water.
"A larger dam on our existing system is not an option, but as the region grows, alternative raw water sources will be needed in the future to cater for this growth," Mr Care said.
He said WBW was investigating alternatives and the timing and costs associated with these options.
" Most options take a long time to implement due to legislative requirements, so we need to plan in advance," he said.
Fraser Coast Mayor Gerard O'Connell said the future of the region's water supply might require more infrastructure.
"We spend a considerable amount of time around the planning of this emerging community," he said.
"There's no doubt in my mind the big-ticket solutions or options will require the funding the support and the partnership of State Government."