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Welcome to Greater Dublin Drainage


Greater Dublin Drainage (GDD) is a project to develop a new regional wastewater treatment facility and associated infrastructure to serve the growing population of Dublin and parts of the surrounding counties of Kildare and Meath.

As our population and economy grows, so too does the volume of wastewater. The amount of wastewater generated in greater Dublin is projected to increase by over 50% in the period to 2050. We must collect and treat this wastewater so that the treated water can be safely returned to the environment.

GDD is a once-in-a-generation project. It represents the next major step in the development of our wastewater infrastructure for Dublin and the surrounding counties. Once operational from 2025, the GDD project will have the capacity to provide wastewater treatment for the equivalent of half a million people.

To meet the needs of our growing population, the GDD project solution will include a new regional wastewater plant at Clonshagh (Clonshaugh), an orbital sewer, a new pumping station, a marine outfall to the Irish Sea and a regional biosolids storage facility, which will serve the population of greater Dublin.

GDD is a key part of Irish Water’s investment in new wastewater infrastructure in greater Dublin and will protect public health, safeguard our environment and facilitate growth to 2050 and beyond.

Irish Water is continuing to progress the environmental studies required to prepare a planning application for the GDD project, which will be made to the independent planning authority, An Bord Pleanála, in 2018.

Click here for more information on the GDD project.

Latest News

GDD Project Update & Information Events – Autumn 2017

Prior to submitting a planning application, we are undertaking a public information campaign for the Greater Dublin Drainage project. We are providing information and holding public information events on the development of this vital regional project which will serve the … Continue reading

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