Works are scheduled to take place overnight.
Households in Offaly may be without water tonight.
It comes as part of Pump Station Upgrade works, which could see supply disrupted in Tullamore.
The following areas may be impacted: Arden Road, Arden Vale, Arden View, Axis, Burlington Business Park, Carraig Cluin, Charleville Road, Clara Road, Clonaslee Trunk, Cloncollig, Clonminch, Collins Lane North, Collins Lane Trunk, Daingean Road, Marian Place, Shrah, Tinnycross, Tullamore North.
Works are scheduled to take place from midnight until 2am.
However, Uisce Eireann says it may take up to three hours afterwards for supply to fully return.
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