A do not consume notice issued by Irish Water remains in place for over 300 residents in the Kiltegan area as works to install a nitrate removal plant in the area are ongoing and are currently in the process of being commissioned.
Wicklow County Council and Irish Water expect the works to be complete by mid-July.
Meanwhile, a boil water notice remains in place for areas supplied by the Avoca Ballinaclash Public Water Supply.
Residents living in the areas of Ballinaclash, Avoca and Ballymoneen are advised to boil water before use.
Irish Water drinking water compliance and operational experts are working with colleagues in Wicklow County Council to resolve the situation as soon as possible.