1,887 plants indexed.
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.
WETHERSFIELD STW is a secondary treatment plant serving 2,570 people in Braintree, Essex, England. It discharges 572.17 m³/day of treated wastewater, with a designed capacity of 3,076 m³/day.
West Stow STW is a secondary treatment plant serving 2,548 people in West Suffolk, England. It discharges 567.27 m³/day of treated wastewater into the local water environment.
WEEDON STW is a secondary treatment plant in Church Stowe, England, serving approximately 3,018 people. It discharges 671.91 cubic meters of treated wastewater daily.
Watlington STW is a secondary treatment plant in King's Lynn and West Norfolk, England, serving 4,410 people. It discharges treated wastewater into the local water environment, supporting the region's water quality.
Washingborough STW is a secondary treatment plant in North Kesteven, England, serving approximately 3,421 people. It discharges treated wastewater into the local water environment.
WAINFLEET STW is a secondary wastewater treatment plant in East Lindsey, England, serving a population of 2,319. It discharges treated effluent near the North Sea coast, operating under the UK's implementation of the EU Urban Waste Water Treatment Di
ULCEBY STW is a secondary treatment plant in Ulceby, North Lincolnshire, England, serving approximately 2,163 people. It discharges treated wastewater near the Humber Estuary, a major North Sea inlet.
Tollesbury STW is a secondary treatment plant serving 2,415 people in Maldon, Essex, England. It discharges treated wastewater near the coast, operating under UK regulations.
Thorpeness STW is a secondary treatment plant in East Suffolk, England, serving around 2,029 people. It discharges treated wastewater near the North Sea coast, operating under UK regulations.
Tempsford STW is a secondary treatment plant serving approximately 2,029 people in Tempsford, Central Bedfordshire, England. It discharges treated wastewater into local watercourses within the Great Ouse catchment.
SWINESHEAD STW is a secondary wastewater treatment plant serving 3,057 people in Boston, England. It discharges 680.59 cubic meters of treated effluent daily, operating under UK regulations.
STEEPLE CLAYDON STW is a secondary treatment plant in Steeple Claydon, Buckinghamshire, England, serving approximately 2,901 people with a designed capacity of 3,500 m³/day.
SPILSBY STW is a secondary treatment plant in East Lindsey, England, serving approximately 4,148 people. It discharges 923.49 m³/day of treated wastewater into local watercourses.
Southminster STW is a secondary wastewater treatment plant serving 3,620 people in Maldon, Essex, England. It discharges 805.94 cubic meters per day and is located within 10 km of the coast.
South Hykeham STW is a secondary treatment plant in North Kesteven, England, serving approximately 2,154 people. It discharges treated wastewater into local watercourses, supporting the region's water quality.
Skellingthorpe STW is a secondary wastewater treatment plant in North Kesteven, England, serving a population of 4,484. It discharges treated effluent into local watercourses under UK environmental regulations.
Silverstone STW is a secondary treatment plant serving 2,791 people in Towcester, England. It discharges 621.37 m³/day of treated wastewater into local watercourses.
SAXLINGHAM STW is a secondary treatment plant serving 2,226 people in South Norfolk, England. It discharges 495.59 m³/day of treated wastewater into local watercourses.
SAXILBY STW is a secondary wastewater treatment plant in West Lindsey, England, serving approximately 4,019 people. It has a designed capacity of 4,036 m³/day and discharges 894.77 m³/day of treated effluent.
RYHALL STW is a secondary wastewater treatment plant serving Belmesthorpe and Ryhall in Rutland, England. It treats wastewater for approximately 2,598 people with a designed capacity of 2,825 m³/day.
UtilityRadar indexes 1887 wastewater treatment plants in United Kingdom, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, SKELLINGTHORPE STW has the highest designed capacity at 7,600 m3/day.