1,887 plants indexed. Showing 1,267 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.
Basingstoke Wildmoor Basingst STW serves approximately 117,000 people in Basingstoke and Deane, Hampshire, England. The plant discharges treated wastewater into the River Loddon catchment, part of the Thames Basin.
Banbury Spital Farm Banbury STW serves approximately 90,200 people in Cherwell, Oxfordshire, England. The plant operates under the UK's wastewater regulatory framework, ensuring treated effluent meets environmental standards.
Bampton Bampton Oxon STW serves approximately 5,100 people in West Oxfordshire, England. The plant operates under the UK's regulatory framework for wastewater treatment.
AYLESBURY RABANS LANE AYLESBU STW serves approximately 99,300 people in Fairford Leys, England. The plant operates under the UK's implementation of the EU Urban Waste Water Treatment Directive.
ASH VALE STRATFORD ROAD NORTH STW serves Rushmoor, England, treating wastewater for approximately 16,300 people under the UK's regulatory framework.
ASCOT STW serves approximately 19,400 people in Chavey Down, England. The plant operates under the UK's wastewater regulatory framework, ensuring compliance with environmental standards.
Arborfield Berks STW serves approximately 18,700 people in Arborfield, England. The plant operates under the UK's wastewater regulations, ensuring treated effluent meets environmental standards.
Appleton Abingdon Oxon STW is a wastewater treatment plant serving approximately 5,750 people in Vale of White Horse, Oxfordshire, England. It operates under the UK's regulatory framework for small agglomerations.
Alton Hampshire STW serves approximately 45,800 people in East Hampshire, England. The plant operates under the UK's regulatory framework for wastewater treatment.
ALDERSHOT ALDERSHOT HANTS STW serves Rushmoor, England, treating wastewater for approximately 37,300 people. The plant operates under the UK's regulatory framework, discharging into local watercourses.
ABINGDON OXON STW serves approximately 38,900 people in the Vale of White Horse, Oxfordshire, England. The plant discharges into the River Thames catchment, supporting local water quality.
BOWERHILL STW serves Berryfield, England, treating wastewater for approximately 6,111 people. The plant operates under UK regulations and discharges into the local water environment.
Yeovil STW serves approximately 54,864 people in Yeovil, Somerset, England. The plant operates under the UK's water quality regulations, discharging treated effluent into the local catchment.
Wotton Under Edge STW serves approximately 5,772 people in Stroud, Gloucestershire, England. The plant operates under UK wastewater regulations and discharges treated effluent into the local water environment.
WOOTTON BASSETT STW serves Royal Wootton Bassett, Wiltshire, England, treating wastewater for approximately 13,250 people. The plant operates under UK regulations, discharging into local watercourses.
WOOL STW serves Bovington, Dorset, England, treating wastewater for approximately 9,456 people. The plant operates under UK regulations, discharging into the local catchment that drains to the English Channel.
WINCANTON STW is a wastewater treatment plant serving Wincanton, Somerset, England. It operates under the UK's regulatory framework for water quality and discharges into the local catchment of the River Cale.
Wimborne STW serves approximately 21,900 people in Wimborne Minster, England. The plant operates under UK regulations and discharges treated effluent into the local water environment.
WICK ST LAWRENCE STW serves Kingston Seymour, North Somerset, England, treating wastewater for approximately 20,579 people. The plant operates under UK regulations and discharges into local waterways.
Weymouth STW serves approximately 90,629 people in Weymouth, England. The plant is located near the coast and discharges into the English Channel via local watercourses.
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 Wessex Water. UtilityRadar's records show 2 plants linked to this operator.
Among the indexed plants, ALTON ALTON HAMPSHIRE STW has the highest designed capacity at 1 m3/day.