Dozens of homes and businesses in South Longford faced disruption this morning following a major burst.
Irish Water says crews have now fixed the main it's expected supply to customers will be restored fully in the next two to three hours.
Areas affected by the outage included Ballymahon, Carrickedmond and Barry.
Councillor Pat O'Toole says outages are now a common occurrence with householders and businesses facing disruption at least once a month.
He's now calling on Irish Water to replace pipework along the N55 between Ballymahon and Carrickboy.
"Very disappointing that once again we have a water outage in the greater Ballymahon area. This seems to be happening on a very regular basis now. at the last Ballymahon M.D we discussed this and I had a motion down to call on Irish Water to replace the pipe work between Ballymahon town and Carrickboy.
We're going to keep pressing Irish Water to get some work done especially on that stretch of road on the N55."
Irish Water also issued the following statement
Irish Water and Longford County Council have repaired a burst water main that was causing supply disruptions to Carrickredmond, Ballymahon, Barry and surrounding areas in Co. Longford. Following reports supply disruption in the Ballymahon area, crews immediately mobilised and worked as quickly as possible to investigate and repair the issue.
Every effort was made to maintain supply to as many customers as possible, repairs are completed and water is beginning to return. Typically, it takes two to three hours following repairs for normal supply to restore to all customers affected by an unplanned outage.
Speaking about the repair works Paraic Joyce, Irish Water said: "The repairs were conducted as quickly as possible to minimise disruption to the community and restore water for all customers.
"We understand the inconvenience unplanned outages can have on customers and we appreciate their patience as we worked to repair the burst and return the water supply."
Our customer care team is available to help 24/7 on 1800 278 278 and customers can also contact us on Twitter @IWCare with any queries. For further updates please see the Irish Water website www.water.ie