1,887 plants indexed. Showing 1,857 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.
Donaghmore advanced wastewater treatment plant serves Llanrwst, Wales, UK. It discharges treated effluent near the coast, with a designed capacity of 1500 m³/day and a population served of 3031.
Creagh wastewater treatment plant in County Londonderry, Northern Ireland, serves 2,046 people with secondary treatment. It discharges 455.51 m³/day and has a designed capacity of 4,400 m³/day.
Portaferry wastewater treatment plant serves 3,801 people in County Down, Northern Ireland. It provides advanced treatment and discharges 846.23 megaliters annually near the Irish Sea coast.
Kesh wastewater treatment plant in Northern Ireland serves 2,678 people with secondary treatment. It has a designed capacity of 3,000 m³/day and discharges 596.22 m³/day.
Hilltown wastewater treatment plant in County Down, Northern Ireland serves 2,143 people with secondary treatment. It discharges 477.11 megalitres annually and operates under the EU Urban Waste Water Treatment Directive.
Glenavy wastewater treatment plant serves 2,112 people in County Antrim, Northern Ireland, with secondary treatment. It discharges 470.20 m³/day and has a designed capacity of 2,500 m³/day.
Garvagh wastewater treatment plant serves 2,773 people in County Londonderry, Northern Ireland, with secondary treatment. It discharges 617.37 m³/day and has a designed capacity of 3,214.00 m³/day.
Dromore Tyrone wastewater treatment plant serves approximately 2,000 people in County Tyrone, Northern Ireland. It provides secondary treatment and discharges treated effluent into local waterways.
Portglenone wastewater treatment plant serves Clady, Northern Ireland, treating wastewater for approximately 3,476 people. It operates under secondary treatment standards within the UK regulatory framework.
Drumaness wastewater treatment plant in Northern Ireland serves 2,609 people with advanced treatment. It discharges 580.85 megalitres annually and has a designed capacity of 2,651 megalitres.
Claudy wastewater treatment plant serves the village of Claudy in Northern Ireland, UK. It provides secondary treatment for a population of approximately 2,722 and discharges treated effluent into local watercourses.
Sion Mills wastewater treatment plant serves 3,544 people in County Tyrone, Northern Ireland. It provides secondary treatment and discharges treated effluent into the local river system.
Richill wastewater treatment plant serves Armagh, Northern Ireland, with secondary treatment for a population of 3,267. It discharges 727.35 megaliters annually and has a designed capacity of 4,914.00.
Rathfriland wastewater treatment plant serves the Newry area in Northern Ireland, UK. It provides secondary treatment for a population of approximately 3,977 and has a designed capacity of 4,000 m³/day.
Newtownstewart wastewater treatment plant in County Tyrone, Northern Ireland serves about 2,170 people with advanced treatment, discharging 483.12 megaliters annually.
Moy wastewater treatment plant serves the town of Moy in County Tyrone, Northern Ireland. It provides secondary treatment for a population of approximately 3,448 and has a designed capacity of 3,300 cubic meters per day.
Moneyreagh wastewater treatment plant serves 2,380 people in County Down, Northern Ireland, with advanced treatment. It discharges 529.87 megaliters annually into the local water environment near the coast.
Moneymore wastewater treatment plant serves approximately 2,800 people in County Londonderry, Northern Ireland. The secondary treatment facility discharges treated effluent into local waterways under UK regulations.
Markethill wastewater treatment plant serves 2,526 people in County Armagh, Northern Ireland. It provides secondary treatment and discharges treated effluent into local waterways within the Neagh Bann river basin.
Maghaberry wastewater treatment plant serves Broomhedge, County Down, Northern Ireland. It provides secondary treatment for a population of 4,225, discharging 940.63 m³/day.
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, Portaferry has the highest designed capacity at 5,287 m3/day.