Uisce Eireann says repairs to a burst water main may cause supply disruptions at Bellanascaddan and surrounding areas between Letterkenny and Kilmacrennan.
Works are scheduled to take place until 2:45 this afternoon.
Meanwhile, a power outage may cause supply disruptions to Corradooey, Rooskey, Findrum, Blackrepentance, Convoy and surrounding areas until 4 o’clock this afternoon.
In all cases, Uisce Eireann recommends that people allow 2-3 hours after the estimated restoration time for supplies to fully return.