South Dublin South Dublin South Dublin () is a county in Ireland, within the province of Leinster, and the Dublin Region, a successor to County Dublin, from which its name derives. South Dublin County Council is the local authority for the county. The county contains both dense suburbs of Dublin and stretches of unpopulated mountain. In 2011 it had a population of 278,749, making it the third most populous county in the state. South Dublin has an area of 222.74 square kilometres. It is bounded by Dublin City (15 km to the north east), the River Liffey (separating it from Fingal to
River Shannon to Dublin pipeline River Shannon to Dublin pipeline Dublin City Council published a plan in 2011 to supply up to 350 million litres of water a day from Lough Derg to Dublin city and region. In January 2014, Irish Water took over management of the project which is currently in the Planning Stage. In 2016 it was proposed that over two million people will benefit from the pipeline suppling not only Dublin but also an area including Arklow, Athlone, Athy, Carlow, Drogheda, Mullingar, Navan, Portaloise and Tullamore. In 2018 Irish Water announced plans to seek planning permission for the project. In November 2016