Latest: Water transported in to ease crisis in Louth and Meath

Latest: Irish Water has said it  is confident that the water supply in the north east will be fully restored by Thursday.

Update 6pm: Irish Water has said it  is confident that the water supply in the north east will be fully restored by Thursday.

A special part is being engineered in Belfast to fix a burst main in Drogheda, which is due to be ready and fitted by Wednesday.