Colin Byrne
- Published on: 20 April 2023
- Last updated on: 4 February 2025

Colin Byrne has responsibility at Head of Business Unit level for leading the Water Advisory Unit. This unit consists of the Department’s water policy advisers and technical policy team for water services and water quality. The unit provides broad technical advice to the Water Division and to the Department; leads Ireland’s Water Framework Directive planning process including overseeing the preparation and coordination of implementation of river basin management plans and associated programmes of measures; oversees policy-level compliance with the requirements of the Nitrates Directive, Urban Wastewater Treatment Directive, Bathing Waters Directive and Drinking Water Directive. It also manages related EU Infringements and provides strategic technical oversight of the associated Uisce Éireann work programmes.