1,887 plants indexed. Showing 1,266 matching current filters.
The UK's wastewater is treated by 11 regional water companies including Thames Water, Severn Trent, Anglian Water, Welsh Water and Scottish Water, under Ofwat regulation. UtilityRadar indexes 1887 wastewater treatment plants in United Kingdom with a combined designed capacity of 2,480,261 m³/day. The largest plant on file is ROTHERWAS STW FIR TREE LANE HFD STW, treating 76,862 m³/day.
The UK's wastewater is treated by 11 regional water companies including Thames Water, Severn Trent, Anglian Water, Welsh Water and Scottish Water, under Ofwat regulation.
UtilityRadar's directory currently lists 1,887 wastewater treatment plants across United Kingdom. Together these plants represent a combined designed capacity of approximately 2,480,261 m³/day.
By treatment level, the directory contains 598 secondary, 20 advanced, 2 primary-treatment plants. Secondary treatment (typically activated sludge with biological nutrient removal) is the most common standard.
The largest plant indexed for United Kingdom is ROTHERWAS STW FIR TREE LANE HFD STW, with a designed capacity of 76,862 m³/day.
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.
New Holland wastewater treatment plant serves Lisburn, Northern Ireland, treating wastewater for approximately 67,199 people. It operates under the UK's regulatory framework for wastewater management.
Limavady wastewater treatment plant serves approximately 16,194 people in County Londonderry, Northern Ireland. It is located near the coast and operates under UK and EU wastewater regulations.
Larne wastewater treatment plant serves the town of Larne in Northern Ireland, United Kingdom. It treats wastewater from a population of approximately 28,116 and discharges into the Irish Sea.
Killyleagh wastewater treatment plant serves approximately 8,000 people in County Down, Northern Ireland. The facility discharges treated effluent into the Irish Sea via local watercourses.
Kilkeel wastewater treatment plant serves approximately 10,587 people in Kilkeel, Northern Ireland. The facility operates under UK regulations and discharges into local waterways near the Irish Sea coast.
Keady wastewater treatment plant serves the town of Keady in County Armagh, Northern Ireland. It operates under UK regulations and discharges treated effluent into local watercourses.
Dunmurry wastewater treatment plant serves approximately 53,605 people in the Belfast area of Northern Ireland, United Kingdom. The facility is located inland and operates under UK and EU regulatory frameworks.
Dungiven wastewater treatment plant serves approximately 4,759 people in County Londonderry, Northern Ireland. The facility operates under UK regulations and discharges into local waterways.
Dromore wastewater treatment plant serves Gamblestown, Northern Ireland, UK. It serves a population of 7,355 and has a designed capacity of 1.00 (units unspecified).
Downpatrick wastewater treatment plant serves approximately 17,372 people in Downpatrick, Northern Ireland. The facility operates under UK and EU wastewater regulations, discharging treated effluent into local watercourses.
Coalisland wastewater treatment plant serves approximately 12,095 people in County Tyrone, Northern Ireland. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
Castlederg wastewater treatment plant serves the town of Castlederg in County Tyrone, Northern Ireland. It operates under UK and EU regulations for small agglomerations.
Carrickfergus wastewater treatment plant serves approximately 32,000 people in County Antrim, Northern Ireland. The facility operates under UK regulations and discharges treated effluent into the local coastal environment of Belfast Lough.
Bushmills wastewater treatment plant serves the town of Bushmills in County Antrim, Northern Ireland. It treats wastewater from a population of approximately 5,539 under UK and EU regulatory frameworks.
Belfast wastewater treatment plant serves 365,000 people in Northern Ireland, discharging treated effluent into Belfast Lough. The facility operates under UK and EU regulatory frameworks.
Ballynahinch wastewater treatment plant serves approximately 7,942 people in County Down, Northern Ireland. The facility discharges treated effluent into local waterways under UK environmental regulations.
Kinnegar wastewater treatment plant serves Holywood, Northern Ireland, treating wastewater for approximately 73,000 people. The facility is located near the coast of Belfast Lough.
Ballymoney Glenstall wastewater treatment plant serves County Londonderry, Northern Ireland, treating wastewater for approximately 21,219 people. The facility operates under UK regulations and discharges into local waterways.
Ballykelly wastewater treatment plant serves approximately 4,800 residents in County Londonderry, Northern Ireland. The facility discharges into local waterways within the Foyle catchment, supporting water quality in the region.
Ballycastle wastewater treatment plant serves Ballyvoy, Northern Ireland, treating wastewater for approximately 14,000 people. It is located within 50 km of the coast, discharging into the North Atlantic via local waterways.
UtilityRadar indexes 1887 wastewater treatment plants in United Kingdom, with treatment level, capacity, operator and discharge data on each record.
Among the plants on this page, the most-referenced operator is NI Water. UtilityRadar's records show 20 plants linked to this operator.
Among the indexed plants, New Holland has the highest designed capacity at 1 m3/day.