1,887 plants indexed. Showing 786 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.
Doddington STW is a secondary treatment plant serving 3,720 people in Fenland, Cambridgeshire, England. It discharges treated wastewater into local watercourses within the Great Ouse catchment.
DEDHAM STW is a secondary wastewater treatment plant in Colchester, England, serving 2,081 people. It discharges 463.30 m³/day and has a designed capacity of 2,650 m³/day.
Debenham STW is a secondary treatment plant serving 2,138 people in Mid Suffolk, England. It discharges treated wastewater into local watercourses, operating under UK environmental regulations.
CROWLAND STW is a secondary treatment plant serving 3,788 people in Crowland, South Holland, England. It discharges 843.34 cubic meters of treated wastewater daily.
Copford STW is a secondary wastewater treatment plant serving 4,243 people in Colchester, Essex, England. It discharges 944.64 m³/day and is located within 10 km of the coast.
CLEY NEXT THE SEA STW is a secondary wastewater treatment plant in North Norfolk, England, serving approximately 2,894 people. It discharges 644.31 cubic meters of treated effluent daily, with a designed capacity of 3,293 cubic meters.
CLARE STW is a secondary wastewater treatment plant serving Braintree, Essex, England. It discharges treated effluent into local waterways, supporting the region's water quality management.
CAISTOR STW is a secondary wastewater treatment plant in West Lindsey, England, serving approximately 3,800 people. It discharges treated effluent into local watercourses within the Lincolnshire region.
BYLAUGH STW is a secondary treatment plant serving approximately 3,000 people in Breckland, Norfolk, England. It discharges treated wastewater into local waterways within the Norfolk region.
BRISTON STW is a secondary wastewater treatment plant in North Norfolk, England, serving approximately 2,571 people. It discharges treated effluent into local watercourses, supporting the region's water quality management.
BRANTHAM STW is a secondary treatment plant in Babergh, Suffolk, England, serving approximately 3,188 people. It discharges treated wastewater near the coast, with a designed capacity of 3,622 m³/day.
Billinghay STW is a secondary wastewater treatment plant in North Kesteven, Lincolnshire, England, serving a population of 2,499. It discharges treated effluent into local watercourses within the Anglian Water region.
Badwell Ash STW is a secondary treatment plant in Mid Suffolk, England, serving approximately 2,200 people. It discharges 489.57 cubic meters of treated wastewater daily.
ALFORD STW is a secondary treatment plant in East Lindsey, England, serving 3,648 people. It discharges 812.17 m³/day of treated wastewater and is located within 10 km of the coast.
ACLE STW is a secondary treatment plant serving 3,713 people in Broadland, Norfolk, England. It discharges 826.64 m³/day of treated wastewater into local waterways near the North Sea coast.
Lifford WWTP is a primary treatment plant serving 2,262 people in County Donegal, Ireland. It discharges 503.60 m³/day of treated wastewater into the local water environment.
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.
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.
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 4 plants linked to this operator.
Among the indexed plants, CAISTOR STW has the highest designed capacity at 9,728 m3/day.