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.
PEWSEY STW is a wastewater treatment plant serving approximately 7,200 people in Pewsey, Wiltshire, England. It operates under the UK's urban wastewater regulations, which mandate secondary treatment for inland agglomerations of this size.
PAULTON STW serves approximately 10,000 people in Paulton, England. The plant operates under the UK's wastewater regulatory framework, discharging treated effluent into local watercourses.
Ferndown, Verwood, West Moors, and St Ives STW serves approximately 40,798 people in Hurn, England. The plant operates under the UK's wastewater regulatory framework, discharging treated effluent into local watercourses.
MINEHEAD STW serves Dunster, Somerset, England, treating wastewater for approximately 25,945 people. The plant operates under UK regulations implementing the EU Urban Waste Water Treatment Directive.
Melksham STW serves approximately 18,700 people in Melksham, Wiltshire, England. The plant discharges treated wastewater into the local river system, contributing to the Bristol Avon catchment.
MARTOCK STW serves the Somerset town of Martock, England, treating wastewater for approximately 8,210 people. The plant discharges into local waterways within the Parrett River catchment.
MARNHULL STW is a wastewater treatment plant serving approximately 5,515 people in Marnhull, Dorset, England. It operates under the UK's regulatory framework for small agglomerations.
Malmesbury STW serves approximately 10,786 people in Milbourne, England. The plant operates under the UK's wastewater regulatory framework, discharging treated effluent into local watercourses.
Lytchett Minster STW serves approximately 8,749 people in Dorset, England. The plant operates under the UK's wastewater regulatory framework, discharging treated effluent into local watercourses.
LANGPORT STW serves Huish Episcopi, Somerset, England, treating wastewater for approximately 8,639 people. The plant operates under UK regulations implementing the EU Urban Waste Water Treatment Directive.
Bournemouth Kinson STW serves approximately 41,911 people in Parley Cross, England. The plant operates under the UK's wastewater regulatory framework, discharging treated effluent into local watercourses.
Clevedon, Nailsea, and Yatton STW is a wastewater treatment plant serving over 52,000 people in Kingston Seymour, England. It operates under the UK's regulatory framework for wastewater treatment.
KEYNSHAM STW is a wastewater treatment plant serving 17,638 people in South Gloucestershire, England. It operates under the UK's water quality regulations, discharging into the River Avon catchment.
ILMINSTER STW serves the Whitelackington area in Somerset, England, treating wastewater for approximately 7,418 people. The plant operates under UK regulations aligned with the EU Urban Waste Water Treatment Directive.
Bournemouth Holdenhurst STW serves Christchurch, England, treating wastewater for approximately 169,595 people. The plant is located near the coast and operates under UK regulations aligned with the EU Urban Waste Water Treatment Directive.
GLASTONBURY STW is a municipal wastewater treatment plant serving approximately 26,250 people in Glastonbury, Somerset, England. It discharges into the Somerset Levels, a low-lying wetland area of ecological importance.
Gillingham STW serves approximately 13,460 people in Gillingham, England. The plant operates under the UK's wastewater regulations, which require secondary treatment for agglomerations of this size.
FROME STW is a municipal wastewater treatment plant serving approximately 30,000 people in Spring Gardens, Somerset, England. It operates under the UK's implementation of the EU Urban Waste Water Treatment Directive.
Fordingbridge STW is a wastewater treatment plant serving the New Forest area in Hampshire, England. It treats wastewater for approximately 9,300 people under UK environmental regulations.
EVERCREECH STW serves Pecking Mill and Evercreech in Somerset, England, with a population equivalent of 16,129. The plant operates under UK wastewater regulations, discharging treated effluent into local watercourses.
UtilityRadar indexes 1887 wastewater treatment plants in United Kingdom, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, PAULTON STW has the highest designed capacity at 1 m3/day.