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.
Peacehaven Wastewater Treatment Works serves approximately 273,000 people in East Sussex, England. The plant discharges treated effluent into the English Channel, supporting coastal water quality.
Truro Newham STW serves approximately 28,367 people in Truro, Cornwall, England. The plant discharges treated wastewater into the local water environment near the Truro River estuary.
Blackburn STW is a major wastewater treatment plant serving South Ribble, Lancashire, England. It treats wastewater for approximately 250,700 people under the UK's regulatory framework.
Whitchurch STW serves the town of Whitchurch in Shropshire, England, treating wastewater for a population of approximately 10,852. The plant operates under UK regulations implementing the EU Urban Waste Water Treatment Directive.
Neston STW is a wastewater treatment plant serving approximately 18,075 people in Neston, England. Located near the Dee Estuary, it plays a key role in protecting the local aquatic environment.
Chester STW serves approximately 117,000 people in Chester, England. The plant operates under the UK's implementation of the EU Urban Waste Water Treatment Directive.
Heswall Sewage Treatment Works STW serves approximately 9,300 residents in Heswall, Wirral, England. The plant operates under the UK's wastewater regulatory framework and discharges into the local water environment.
Ross Lower Cleeve WWTW serves Ross-on-Wye, England, treating wastewater for approximately 18,157 people. The plant discharges into the River Wye, a key tributary of the Severn Estuary.
COLEFORD STW serves approximately 26,098 people in Forest of Dean, England. The plant operates under the UK's implementation of the EU Urban Waste Water Treatment Directive, ensuring appropriate treatment for inland discharge.
Leominster STW Southern Avenue STW serves the town of Leominster in Herefordshire, England. The plant treats wastewater for approximately 11,437 people under UK environmental regulations.
BROMYARD STW serves Bromyard, England, treating wastewater for approximately 4,589 people. The plant operates under UK regulations and discharges into local watercourses.
EIGN STW Outfall Works Road HFD STW is a wastewater treatment plant serving Bullinghope, England, UK. It handles a population equivalent of 135,931 and has a designed capacity of 1.00 (units unspecified).
ABINGDON STW is a closed secondary treatment plant in Sutton Courtenay, Oxfordshire, England. It was designed to handle a capacity of 41,683 cubic meters per day, serving the local area.
Aldershot Military STW serves 4,500 people in Rushmoor, Hampshire, England. The plant operates under UK wastewater regulations, discharging treated effluent into local watercourses.
OXFORD STW serves approximately 206,000 people in Oxford, England, as part of the UK's municipal wastewater infrastructure. The plant discharges treated effluent into the River Thames catchment, supporting the local aquatic environment.
Wokingham Berks STW serves approximately 12,600 people in Wokingham, England. The plant discharges treated wastewater into local watercourses within the Thames River basin.
WOKING STW serves approximately 73,400 people in Woking, Surrey, England. The plant discharges treated wastewater into the River Wey catchment, part of the Thames Basin, under UK environmental regulations.
Witney STW serves approximately 44,600 people in West Oxfordshire, England. The plant discharges treated wastewater into the River Windrush, a tributary of the River Thames.
Wisley STW is a municipal wastewater treatment plant serving Guildford, England, UK. It treats wastewater from approximately 24,800 people and operates under the UK's implementation of the EU Urban Waste Water Treatment Directive.
WINDSOR HAM ISLAND OLD WINDSO STW serves approximately 37,400 people in Old Windsor, England. The plant discharges treated wastewater into the River Thames, supporting 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 plants on this page, the most-referenced operator is South West Water. UtilityRadar's records show 1 plant linked to this operator.
Among the indexed plants, ABINGDON STW has the highest designed capacity at 41,683 m3/day.