Irish Water say customers in the area may experience low water pressure for a time.
Water Supply has been restored to 300 homes in Offaly overnight.
The outage was caused by an underground leak affecting Pullough and the surrounding area.
Irish Water are advising that customers may experience low water pressure for a time this morning.
John Gavin, Irish Water, said
“The repairs were conducted as quickly and efficiently as possible to minimise disruption to the area and restore water for all customers.
We understand the inconvenience unplanned outages can have on customers and we appreciate your patience as we worked to return the water supply to homes and businesses as quickly as possible.”