Water has been restored to the township of Point Lookout, North Stradbroke Island this morning.
The reservoir remains low so residents are asked to continue to conserve water to allow the reservoir to replenish.
Crews worked overnight after the reservoir was found to be depleted late yesterday and have now successfully returned supply to residents.
Fresh crews will arrive this morning to continue work and investigate the cause of the problem.
A fresh water tanker will be sent on the first barge this morning as a backup water supply.