Uisce Éireann crews are working to repair a major burst in Carrick On Suir and restore water to customers affected.
The burst has been located in the Greenhills area and repairs are ongoing.
An alternative water supply is located in the Green Hill Estate.
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Uisce Éireann's Pierce Faherty has assured customers that every effort is being made to restore a full water supply as quickly as possible.
"We understand the inconvenience of an unplanned outage and we thank customers for their support while our works continue."
Repairs are expected to be completed by 5pm on Wednesday May 21.
Typically, it takes two to three hours following repairs for normal supply to restore to all customers affected by an unplanned outage.
However, it may take longer for normal supply to be restored to customers at the end of the network or on higher ground as the system recharges.
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To ensure the safety of the crews carrying out the repairs to the burst and the safety of the public, traffic management will be in place and will be clearly signposted.
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