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.
STONE STW is a secondary wastewater treatment plant in Stone, Buckinghamshire, England, serving approximately 3,200 people. It discharges treated effluent into local watercourses under UK environmental regulations.
Standon Standon Herts STW is a secondary wastewater treatment plant in East Hertfordshire, England, serving approximately 3,850 people. It discharges treated effluent into local watercourses under UK environmental regulations.
Sherborne St John STW is a secondary treatment plant serving 2,650 people in Basingstoke and Deane, England. It discharges approximately 590 m³/day of treated wastewater into the local water environment.
Ramsbury Marlborough STW is a secondary treatment plant in Ramsbury, Wiltshire, England, serving approximately 3,180 people with a designed capacity of 3,201 m³/day.
PURTON STW is a secondary treatment plant serving 3,700 people in Purton, Wiltshire, England. It discharges 823.75 m³/day of treated wastewater into local watercourses.
Milton-under-Wychwood Milton U STW is a secondary treatment plant in West Oxfordshire, England, serving 3,840 people with a designed capacity of 3,930 m³/day and a discharge volume of 854.92 m³/day.
Middleton Cheney STW is a secondary treatment plant serving 4,420 people in West Northamptonshire, England. It discharges 984.05 m³/day of treated wastewater into local watercourses.
Long Crendon Buckinghshire STW is a secondary treatment plant serving 2,550 people in Long Crendon, England. It discharges 567.72 cubic meters of treated wastewater daily.
Lechlade Glos STW is a secondary treatment plant serving approximately 2,950 people in Cotswold, England. It discharges treated wastewater into the local water environment under UK regulations.
KINTBURY STW is a secondary wastewater treatment plant serving 2,680 people in Kintbury, England. It discharges 596.66 m³/day of treated effluent, with a designed capacity of 2,691 m³/day.
Kingston Bagpuize STW is a secondary treatment plant serving 3,010 people in Oxfordshire, England. It discharges treated wastewater into local watercourses, supporting the Thames River Basin.
Kingsclere Hants STW is a secondary wastewater treatment plant serving 4,260 people in Newbury, Hampshire, England. It discharges treated effluent into the local water environment under UK regulatory standards.
KINGS SUTTON KINGS SUTTON NOR STW is a secondary treatment plant serving King's Sutton, England. It treats wastewater for approximately 3,660 people with a discharge volume of 814.84 cubic meters.
Kimpton STW is a secondary treatment plant serving 2,160 people in North Hertfordshire, England. It discharges treated wastewater into local watercourses, supporting the region's water quality.
Hurley STW is a secondary treatment plant serving approximately 2,450 people in Hurley, England. It discharges 545.46 m³/day of treated wastewater, with a designed capacity of 4,770 m³/day.
Hook Norton Hook Norton Oxon STW is a secondary treatment plant in Cherwell, Oxfordshire, serving 2,620 people. It discharges 583.30 cubic meters of treated wastewater daily, with a designed capacity of 2,953 cubic meters.
Heyford STW is a secondary treatment plant serving 2,190 people in Cherwell, Oxfordshire, England. It discharges 487.57 m³/day of treated wastewater into local watercourses.
Hatfield Heath STW is a secondary treatment plant in Uttlesford, England, serving 2,850 people. It discharges 634.51 m³/day of treated wastewater, operating under UK regulations.
Finstock Finstock Oxon STW is a secondary wastewater treatment plant in West Oxfordshire, England, serving a population of 3,460. It discharges 770.32 cubic meters of treated effluent daily.
FAIRFORD FAIRFORD GLOS STW is a secondary treatment plant in Cotswold, England, serving approximately 4,360 people. It discharges treated wastewater into the local water environment.
UtilityRadar indexes 1887 wastewater treatment plants in United Kingdom, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, HURLEY STW has the highest designed capacity at 4,770 m3/day.