Scottish Water engineers are fixing a burst water pipe in Cumnock - which the company says will take "a number of hours" to repair.
Residents of Holmhead said they had been without water for the past two nights, after disruptions to supplies.
One man said his water returned at around 9pm last night, after being off since around 6pm, but he says his water supply has gone off again this morning.
READ MORE: Holmhead residents left without water after burst main
Now the supply company say that fixing the issue could take up to six hours to complete, after releasing an update at 11.02am today.
The said: "We are currently repairing a burst water pipe which is causing the interruption to the water supply for customers in Cumnock
"The full repair will take an estimated six hours from now to complete.
"The water supply will gradually return to normal for customers once the repair has been completed. We expect it will take up to an hour for all customers to have normal water supply restored.
"While we carry out the repair please be aware that you may experience no water supply, low / intermittent pressure or discoloured water.
"If you require additional support, please use this link to sign up as a Priority Services Customer.
"If you have experienced flooding due to this incident and need support, please call us on 0800 0778 778 or via one of the other methods on our contact us page."
A further update is expected at around 5.30pm today (May 11).
Have you been having issues with your water supply?
Let us know if you've been having issues with your water supply, as Scottish Water have been fixing issues in Cumnock.
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