Uisce Éireann (formerly Irish Water) | Water Utility | Uisce ÉireannHomepage of the national water utility, Uisce Éireann (formerly Irish Water). Navigate through the site using the links on this page.The raw water supply to Ballymore Eustace Water Treatment Plant is taken from Poulaphouca Reservoir (Blessington Lakes), and is monitored continuously. Dedicated water service crews are on the ground and repair works are expected to be completed by 3pm https://www.water.ie/