The major project is seen as crucial to the provision of future housing infrastructure.
A €1.3 billion drainage project for the Greater Dublin Area will now go ahead.
Uisce Éireann has reached a settlement as part of High Court judicial review proceedings relating to elements of the Greater Dublin Drainage Project.
The major project is seen as crucial to the provision of future housing infrastructure.
The settlement was reached after engagement between the parties, meaning a full court hearing will no longer be required.
In September, a legal challenge was lodged against the project by Wild Irish Defence.
As part of the agreement, Uisce Éireann has committed to a number of additional measures aimed at strengthening public confidence in the project’s environmental outcomes.
Although several statutory steps are still outstanding, procurement of a construction contractor is due to begin in February 2026.
Once a contractor is appointed, the Greater Dublin Drainage Project is expected to take about four years to build.
The Project is designed to provide additional wastewater treatment capacity for the region.
It will serve parts of Kildare, Meath and north Dublin, providing wastewater treatment for up to 500,000 people.
The Ringsend plant, currently at full capacity, cannot meet growing demand, according to Uisce Eireann.
The new treatment facility will be built on a 30-acre site at Clonshaugh.
It will be linked to Blanchardstown by an underground sewer and connected to the sea at Baldoyle via a 6km outfall pipe.
The project was first submitted in 2018.

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