It was imposed by Irish Water on July 8th.
An Irish Water issued a boil water notice remains in effect for parts of south Kildare.
They are: Castledermot &, Graney
The notice also impacts parts of Wicklow, and Carlow Town, Palatine, Killerig/Grange, Rathvilly, Tullow, Ardattin, Ballon, Rathoe, Bennekerry, Tankardstown.
The BWN has been issued because of a "pollution incident in the River Slaney", which is affecting water supplies.
Following consultation with the HSE, the Boil Water Notice issued for the Carlow North Regional (Rathvilly) and Tullow Public Water Supplies has been extended to include Carlow Town. See https://t.co/ATOvdbxnJN for areas affected, which also includes parts of Kildare and Wicklow.
— Uisce Éireann - Irish Water (@IrishWater) July 9, 2021