Irish Water say they are working with the County Council to restore normal water supplies following issues at a pumping station in Lisgoold.
They say customers may experience low pressure and some discoloured water in the meantime.
In a statement to RedFM News, Irish Water estimated that normal water supply should be restored by midnight tonight and once completed, the water should begin to return to normal,
They are warning that this could take longer for those on the extremities of the network or on higher ground.