Irish Water says work on upgrading the Lough Talt water treatment plant in South Sligo is on track to be completed by the end of this year.
The new plant will benefit more than 13,000 people.
Recently, there have been queries from people in the area about progress on work on the current treatment plant which does not provide adequate protection against cryptosporidium and THMs.
Meanwhile, as the upgrade work continues, Irish Water is also pointing out that the boil water notice for the scheme still remains in place.
Local Fine Gael Councillor and Cathaoirleach of Sligo County Council Dara Mulvey says work on the treatment plant is proceeding as planned.
Meanwhile, Independent Sligo/Leitrim TD Marian Harkin says Irish Water is in the final stages of commissioning the Lough Talt water scheme.
After speaking with Irish Water today (Monday), she says Irish Water is working with the Environmental Protection Agency (EPA) to ensure that all drinking water standards are fully complied with.
She added that the timetable for lifting the boil water notice is before the end of the year when all the test runs are fully completed.