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.
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.
Reepham STW is a secondary treatment plant serving approximately 4,200 people in Broadland, Norfolk, England. It discharges treated wastewater into the local water environment under UK regulations.
RAYNE STW is a secondary treatment plant serving 2,768 people in Rayne, Braintree, Essex, England. It discharges treated wastewater into local watercourses within the Blackwater catchment.
Papworth Everard STW is a secondary treatment plant serving 4,106 people in South Cambridgeshire, England. It discharges treated wastewater into local watercourses within the Great Ouse catchment.
OLD LEAKE SKIPMARSH LANE STW is a secondary treatment plant in Boston, England, serving approximately 2,597 people. It discharges 578.18 cubic meters of treated wastewater daily.
Old Buckenham STW is a secondary treatment plant in Breckland, Norfolk, England, serving approximately 2,319 people. It discharges treated wastewater into local watercourses within the Norfolk river basin.
ODELL STW is a secondary treatment plant in Felmersham, England, serving approximately 3,689 people. It discharges 821.30 cubic meters of treated wastewater daily, with a designed capacity of 4,950 cubic meters.
NEWPORT STW is a secondary treatment plant in Uttlesford, England, serving approximately 2,834 people. It discharges 630.95 cubic meters of treated wastewater daily, with a designed capacity of 3,127 cubic meters.
NEEDINGWORTH STW is a secondary wastewater treatment plant in Needingworth, Huntingdonshire, England, serving a population of 2,184. It discharges treated effluent into local watercourses within the Great Ouse catchment.
NECTON STW is a secondary wastewater treatment plant in Breckland, Norfolk, England, serving approximately 3,112 people. It discharges treated effluent into local watercourses within the Anglian River Basin District.
NAYLAND STW is a secondary wastewater treatment plant in Babergh, Suffolk, England, serving approximately 3,047 people. It discharges treated effluent into local waterways, supporting the Stour River catchment.
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.