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.

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

As our population and economy grow, 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. 

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.

Project Status

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

Prior to submitting a planning application for GDD in 2018, Irish Water undertook a public information campaign for the Greater Dublin Drainage project in November 2017.

GDD Public Information Event Displays - November 2017

For more information, visit the GDD Project website.

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