A number of homes and businesses in South Inishowen are without water this morning.
Irish water say repairs to a burst water main may cause supply disruptions to Burnfoot, Bridgend, Newtown and surrounding areas.
Works have an estimated completion time of 8pm this evening.
While supply may take 2-3 hours to fully return to all affected properties.
A traffic management system will be in place for the duration of these urgent repair works.