Works have been taking place overnight to repair a burst watermain affecting several busy city roads.
The fault has been impacting areas including College ROad, Lough Atalia Road and Wellpark Road.
Uisce Éireann says the fault has been restored, but it may take some time for water to be restored to all customers
It usually takes two to three hours after repairs for normal supply to be restored, but it may be longer for those at the end of the network or on higher ground as the system recharges.
Vulnerable customers who have registered with Uisce Éireann receive direct communications from us for planned and unplanned outages lasting more than four hours.
To register as a vulnerable customer or as an alternative contact, visit our Vulnerable Customers page.
Uisce Éireann is committed to keeping customers informed across multiple platforms 24/7 and we encourage customers to engage with us through our website, X channels @IWCare and @IrishWater and through our customer care helpline which is open 24/7 on 1800 278 278.
Uisce Éireann has a free text service, providing real-time updates for local issues. Customers can sign up with their Eircode and mobile number at our Text Updates page.