Irish Water has said a boil water notice for Boyle, Co Roscommon has been lifted.
Residents in Boyle and Ardcarne have been told that drinking water restrictions, which have been in place since 2013, are now fully removed.
Irish Water said the move was seven months ahead of schedule.
The agency says it is “the first step in an integrated programme to resolve all outstanding boil water notices in Co Roscommon this year”.
It said the Boyle notice had affected 6,000 customers.
It added that the lifting of the notice was “achieved through a dedicated prioritised programme of work and a total investment by Irish Water of €26.8m”.