1,887 plants indexed. Showing 1,267 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.
Killinchy wastewater treatment plant serves the Balloo area in Northern Ireland, United Kingdom. It operates under the EU Urban Waste Water Treatment Directive, serving a population of approximately 5,800.
Ballynacor wastewater treatment plant serves approximately 102,500 people in Derrymacash, Northern Ireland. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
Annesborough wastewater treatment plant serves Annsborough, Northern Ireland, UK. It is located inland but within 50 km of the coast, treating wastewater for a population of approximately 5,877.
North Down and Ards wastewater treatment plant serves Groomsport, Northern Ireland, treating wastewater for approximately 71,433 people. The facility operates under UK regulations and discharges into the Irish Sea.
North Coast wastewater treatment plant serves Portstewart, Northern Ireland, UK, with a population equivalent of 76,357. The facility is located near the coast and operates under UK and EU regulatory frameworks.
Donneybrewer wastewater treatment plant serves Derry/Londonderry, Northern Ireland, with a population equivalent of 5,213. The facility is located near the River Foyle and operates under UK and EU wastewater regulations.
Warrenpoint wastewater treatment plant serves the town of Warrenpoint in Northern Ireland, United Kingdom. It is located near the coast and treats wastewater for a population of approximately 14,707.
Waringstown wastewater treatment plant serves County Down, Northern Ireland, treating wastewater for approximately 6,333 people. The facility operates under UK and EU regulatory frameworks for municipal wastewater treatment.
Strabane wastewater treatment plant serves Sion Mills in County Tyrone, Northern Ireland. It treats wastewater for approximately 20,305 people under the EU Urban Waste Water Treatment Directive.
Saintfield wastewater treatment plant serves Aldford, England, UK. It has a designed capacity of 1.00 and serves a population of 5048.
Omagh wastewater treatment plant serves Newtownstewart, Northern Ireland, treating wastewater for approximately 38,720 people. The facility operates under UK and EU regulatory frameworks for wastewater management.
Newtownbreda wastewater treatment plant serves approximately 40,000 people in Belfast, Northern Ireland. It operates under the EU Urban Waste Water Treatment Directive, ensuring compliance with environmental standards for inland discharge.
Ballyrickard wastewater treatment plant serves Newtownards, Northern Ireland, UK. It treats wastewater for approximately 29,883 people under the EU Urban Waste Water Treatment Directive.
Whitehouse Newtownabbey wastewater treatment plant serves approximately 88,000 people in Newtownabbey, Northern Ireland. It is located near the coast and operates under UK and EU wastewater regulations.
Newry wastewater treatment plant serves approximately 58,000 people in Newry, Northern Ireland. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
Newcastle wastewater treatment plant serves 16,263 people in Newcastle, Northern Ireland. Located on the coast, it operates under UK regulations and discharges into the Irish Sea.
Moira wastewater treatment plant serves the town of Moira in Northern Ireland, United Kingdom. It provides essential sanitation for approximately 5,085 residents under the EU Urban Waste Water Treatment Directive.
Maghera wastewater treatment plant serves the town of Maghera in Northern Ireland, United Kingdom. It operates under the EU Urban Waste Water Treatment Directive, which governs treatment standards for agglomerations of this scale.
Culmore wastewater treatment plant serves approximately 133,823 people in Culmore, Northern Ireland. It operates under UK regulations implementing the EU Urban Waste Water Treatment Directive.
Lisnaskea wastewater treatment plant serves approximately 6,400 people in County Fermanagh, Northern Ireland. It discharges into the local water environment under UK regulations.
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 19 plants linked to this operator.
Among the indexed plants, Killinchy has the highest designed capacity at 1 m3/day.