Residents of Wolfe Tone Place, Circular Road, Long Lane, College Row and Cathedral Road in Letterkenny have been affected by a water main burst this Thursday evening.
Irish Water is working on the issue, with works scheduled to take place until 10pm on 28 April.
A traffic management plan will be in place for the duration of the works.
Customers are advised to allow 2-3 hours after the estimated restoration time for your supply to fully return.