A reservoir interruption may cause supply disruptions to An Machaire Beag, Leargain Riach, Cionn na Leargaí, Na Dúnaibh and surrounding areas.
Works are scheduled to take place from midnight until 4pm today.
It is recommended that those affected allow 3-4 hours after the estimated restoration time for supply to fully return.
Meanwhile, a reservoir interruption may cause supply disruptions to Falcarragh Village, Derryconnor and surrounding townlands today, with works scheduled to take place until 11am.