Wastewater plants in Ireland

166 plants indexed. Showing 30 matching current filters.

Ireland's urban wastewater treatment is regulated by Uisce Éireann (Irish Water) and the EPA, with major plants serving Dublin, Cork, Limerick and Galway. UtilityRadar indexes 166 wastewater treatment plants in Ireland with a combined designed capacity of 113 m³/day. The largest plant on file is Leixlip Waste Water Treatment Plant, treating 1 m³/day.

Ireland's urban wastewater treatment is regulated by Uisce Éireann (Irish Water) and the EPA, with major plants serving Dublin, Cork, Limerick and Galway.

Plant directory coverage

UtilityRadar's directory currently lists 166 wastewater treatment plants across Ireland. Together these plants represent a combined designed capacity of approximately 113 m³/day.

Largest plant

The largest plant indexed for Ireland is Leixlip Waste Water Treatment Plant, with a designed capacity of 1 m³/day.

About our data

Plant records are aggregated from publicly available regulatory data (US EPA ECHO, EU UWWTD reporting, national water authority publications), augmented by direct operator information and verified via Google Maps coordinates. Each record includes location, treatment level, capacity where known, operator and operational status. To browse plants by treatment level worldwide, see our secondary and advanced filter views, or read our guide to how sewage treatment works.

30 plants matching filters

Ennis North Waste Water Treatment Plant

County Clare, Ennis Municipal District

Ennis North Waste Water Treatment Plant serves 26,647 people in County Clare, Ireland. The plant discharges into the local water environment, supporting the Shannon Estuary and downstream ecosystems.

Not Reported 26,647 Medium

Courtown_Riverchapel Waste Water Treatment Plant

County Wexford, The Municipal District of Gorey — Kilmuckridge

Courtown_Riverchapel Waste Water Treatment Plant serves County Wexford, Ireland, treating wastewater for over 21,000 people. The plant is located near the coast and operates under EU regulations.

Not Reported 21,262 Medium

Tradaree Waste Water Treatment Plant

County Clare, Shannon Municipal District

Tradaree Waste Water Treatment Plant serves approximately 26,740 people in County Clare, Ireland. The facility operates under Ireland's implementation of the EU Urban Waste Water Treatment Directive.

Not Reported 26,740 Medium

Drogheda Wastewater Treatment plant

County Meath, The Municipal District of Laytown — Bettystown

Drogheda Wastewater Treatment Plant serves County Meath, Ireland, treating wastewater for approximately 66,000 people. The plant discharges into the local water system under EU regulatory oversight.

Not Reported 66,049 Medium

Tralee Wastewater Treatment Plant

County Kerry, Tralee Municipal District

Tralee Wastewater Treatment Plant serves County Kerry, Ireland, treating wastewater for approximately 35,000 people. The plant discharges into the local environment, supporting water quality in the region.

Not Reported 35,149 Medium

Shanganagh Waste Water Treatment Plant

Killiney, Leinster

Shanganagh Waste Water Treatment Plant serves Killiney, County Dublin, Ireland, treating wastewater for approximately 95,000 people. The facility operates under Ireland's implementation of the EU Urban Waste Water Treatment Directive.

Not Reported 94,960 Medium

Cork City Waste Water Treatment Plant

County Cork, Municipal District of Carrigaline

Cork City Waste Water Treatment Plant serves over 312,000 people in County Cork, Ireland. It is located near the coast and discharges into the local water system.

Not Reported 312,640 Medium

Wexford town Waste Water Treatment Plant

County Wexford, The Borough District of Wexford

Wexford town Waste Water Treatment Plant serves 25,616 people in County Wexford, Ireland. The facility is located near the coast and operates under EU Urban Waste Water Treatment Directive standards.

Not Reported 25,616 Medium

Swords Wastewater Treatment Plant

Swords, Leinster

Swords Wastewater Treatment Plant serves the town of Swords in County Dublin, Ireland, treating wastewater for a population of approximately 77,782. The plant is located near the coast in the Leinster region.

Not Reported 77,782 Medium

Balbriggan

Unknown, Unknown

Balbriggan wastewater treatment plant serves approximately 39,650 people in Ireland. The facility is located near the coast and operates under EU Urban Waste Water Treatment Directive regulations.

Not Reported 39,650 Medium

Malahide Waste Water Treatment Plant

Malahide, Leinster

Malahide Waste Water Treatment Plant serves approximately 18,785 people in Malahide, County Dublin, Ireland. Located near the Broadmeadow Estuary, it operates under EU Urban Waste Water Treatment Directive standards.

Not Reported 18,785 Medium

Dungarvan UDC Waste Water Treatment Plant

County Waterford, The Municipal District of Dungarvan — Lismore

Dungarvan UDC Waste Water Treatment Plant serves County Waterford, Ireland, treating wastewater for approximately 24,564 people. The plant operates under Ireland's implementation of the EU Urban Waste Water Treatment Directive.

Not Reported 24,564 Medium

Ballina Waste Water Treatment Plant

County Mayo, Ballina Municipal District

Ballina Waste Water Treatment Plant serves approximately 20,094 people in County Mayo, Ireland. The facility discharges treated effluent into the local water environment under Ireland's implementation of the EU Urban Waste Water Treatment Directive.

Not Reported 20,094 Medium

Tramore Waste Water Treatment Plant

Unknown, Unknown

Tramore Waste Water Treatment Plant serves approximately 16,000 people in Ireland. The facility is located within 50 km of the coast, discharging treated effluent into the local water environment.

Not Reported 16,000 Medium

Sligo

Sligo, Sligo Municipal Borough District

Sligo wastewater treatment plant serves approximately 27,408 people in County Sligo, Ireland. Located in Finisklin, it operates under the EU Urban Waste Water Treatment Directive.

Not Reported 27,408 Medium

Limerick City Waste Water Treatment Plant

Limerick, Munster

Limerick City Waste Water Treatment Plant serves approximately 280,000 people in Limerick, Ireland. The facility is located near the River Shannon and operates under EU wastewater treatment regulations.

Not Reported 280,451 Medium

Wicklow Waste Water Treatment Plant

County Wicklow, The Municipal District of Wicklow

Wicklow Waste Water Treatment Plant serves approximately 26,500 people in County Wicklow, Ireland. Located near the coast, it operates under EU Urban Waste Water Treatment Directive standards.

Not Reported 26,526 Medium

Greystones Waste Water Treatment Plant

Greystones, Unknown

Greystones Waste Water Treatment Plant serves the coastal town of Greystones, County Wicklow, Ireland. It treats wastewater from a population of approximately 36,205 under the EU Urban Waste Water Treatment Directive.

Not Reported 36,205 Medium

Letterkenny Waste Water Treatment Plant

Letterkenny Municipal District, Ulster

Letterkenny Waste Water Treatment Plant serves the Letterkenny Municipal District in County Donegal, Ireland. It treats wastewater from approximately 24,000 people, operating under EU Urban Waste Water Treatment Directive standards.

Not Reported 23,982 Medium

Leixlip Waste Water Treatment Plant

Lucan, Leinster

Leixlip Waste Water Treatment Plant serves over 100,000 people in Lucan, County Dublin, Ireland. It discharges into the River Liffey, which flows into Dublin Bay.

Not Reported 100,309 Medium

Frequently asked

How many wastewater treatment plants are in Ireland?

UtilityRadar indexes 166 wastewater treatment plants in Ireland, with treatment level, capacity, operator and discharge data on each record.

Who operates wastewater treatment in Ireland?

Among the plants on this page, the most-referenced operator is Uisce Éireann (Irish Water). UtilityRadar's records show 20 plants linked to this operator.

What is the largest wastewater treatment plant in Ireland?

Among the indexed plants, Ennis North Waste Water Treatment Plant has the highest designed capacity at 1 m3/day.

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