Wednesday 20 February: The Greater Dublin Drainage (GDD) Project involves the development of a new regional wastewater treatment facility at Clonshaugh and associated drainage infrastructure to serve the growing population of the north Dublin area. It is a vital project to protect public health, safeguard the environment and support the sustainable social and economic growth of the greater Dublin area into the future.

Irish Water welcomes the next stage in this project with confirmation from An Bord Pleanála that an oral hearing will begin on Wednesday 20 March 2019 as part of its assessment of the planning application. The location for the oral hearing will be the Gresham Hotel, O’Connell Street Dublin and it is scheduled to last 10 days.

Response to submissions report published

Irish Water made an application for strategic infrastructure development for the GDD project to An Bord Pleanála on 20 June, 2018. An Bord Pleanála then held a period of statutory public consultation.

Irish Water has responded to the submissions and observations received by An Bord Pleanála during this statutory consultation in a detailed report. This report has been published today and is available to view and download at

The purpose of the oral hearing will be to allow further discussion and examination of relevant issues by the parties to the application.

Irish Water, GDD Project Manager, Jane Chambers said “Greater Dublin Drainage is a vital, once-in-a-generation project to ensure that the wastewater generated every day in our homes, schools and workplaces will continue to be treated safely in compliance with the EU and national wastewater treatment regulations.

Having adequate wastewater treatment infrastructure is essential to facilitate housing provision and commercial development and to support the sustainable growth of the region. The proposed project is the most environmentally, technically and economically beneficial solution to meeting Dublin’s long-term wastewater treatment needs.

Irish Water looks forward to participating at the forthcoming oral hearing being held by An Bord Pleanála.”

Subject to planning consent, construction will begin with the Regional Biosolids Storage Facility in 2020, followed by construction of the GDD wastewater treatment plant, orbital sewer, pumping station and marine outfall.

It is intended that the new regional wastewater treatment facility and associated infrastructure serving greater Dublin will become operational from 2026 and will provide wastewater treatment capacity for the equivalent of half a million people into the future.

Contact Greater Dublin Drainage

Anyone with questions relating to the GDD project is welcome to contact the project team at:

Tel:       0818 44 55 67
(9am-5.30pm Mon-Fri except bank holidays)