Coffey Joins Irish Water in Opening of Strandhill Wastewater Treatment Plant

Coffey joined Irish Water, Sligo County Council and Nicholas O’Dwyer Ltd last Friday morning to officially open Grange, Strandhill, Tubbercurry and Ballinafad Wastewater Treatment Plants (WwTP). The ceremony marks the formal completion of a €16m investment by Irish Water into wastewater treatment capacity for the people of Co. Sligo.

Irish water and Sligo County Council officially opened the new and upgraded wastewater treatment plants at Grange, Strandhill, Tubbercurry and Ballinafad on Friday 1st October 2021. Coffey completed the design and build of the new facilities and will operate three of plants on behalf of Irish Water on a seven-year contract going forward. Nicholas O’Dwyer was the client representative throughout the duration of the project.

Details of Grange, Strandhill, Tubbercurry & Ballinafad Wastewater Treatment Plants (WwTP) Project

The works included upgrading of the existing wastewater treatment plants at Strandhill, Tubbercurry and Ballinafad and the construction of a new plant on a greenfield site at Grange. Work at Strandhill, Tubbercurry and Grange included construction of new inlet works, storm water holding tanks, secondary biological treatment via a Sequence Batch Reactor (SBR), control buildings and sludge thickening facilities.  Additionally, the existing Caravan Park Pumping Station was upgraded at Strandhill and a gravity sewer pipeline to the wastewater treatment plant along with a rising main to bring treated wastewater to the River Moy outfall location were built at Tubbercurry. Finally, at Ballinafad, the works included construction of new inlet works, a storm water holding tank and Rotating Biological Contactor (RBC) secondary biological treatment process.

Benefits of the Grange, Strandhill, Tubbercurry & Ballinafad Wastewater Treatment Plants (WwTP) Project

The upgraded plant at Tubbercurry has doubled the wastewater treatment capacity for the town to 3,500 population equivalent (PE). The Grange investment increases wastewater treatment capacity to 900 PE; the capacity increase at Strandhill allows the plant to cater for a 3,700 PE and the Ballinafad upgrade brings its treatment capacity to 200 PE. In total, the project directly impacts a population of approximately 8,300 people and delivers benefits in terms of development potential, environmental protection, and improved water quality for all.  Additionally, the upgrades ensure that treated wastewater is now fully compliant with the Urban Wastewater Treatment Regulations and with the Wastewater Discharge Licence (WWDL) issued by the EPA before it is discharged into the natural environment. Specifically, the new and upgraded treatment plants will improve water quality in the sea, rivers and lakes for all water sport enthusiasts, as well as marine life in coastal areas including Rosses Point, Streedagh and Strandhill Beaches and the water quality in Tubbercurry Stream, River Moy and in Lough Arrow.

Call Coffey on 091 844 356, email at for more details on this project or to discuss our other work with Irish Water.

Thanks to Irish Water and Michael McLaughlin for images from the event.