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.
South Ambersham STW serves Chichester, England, treating wastewater for approximately 13,564 people. The plant operates under the UK's implementation of the EU Urban Waste Water Treatment Directive.
Ringmer STW serves the village of Ringmer near Lewes, East Sussex, England. The plant treats wastewater for a population of approximately 5,111 and discharges into the local water environment.
THORNHAM STW is a municipal wastewater treatment plant serving Chichester, West Sussex, England. It treats wastewater for a population of 20,326 under the UK's regulatory framework.
Chichester STW serves approximately 34,700 people in Chichester, West Sussex, England. The plant discharges treated wastewater into the local water environment, contributing to the protection of the nearby Chichester Harbour and Solent ecosystem.
Henfield STW is a wastewater treatment plant serving approximately 5,379 people in Horsham, West Sussex, England. It operates under UK regulations and discharges treated effluent into local watercourses.
LIDSEY STW is a wastewater treatment plant serving 27,750 people in Arun, West Sussex, England. It operates under the UK's regulatory framework for wastewater treatment.
PAGHAM STW serves Chichester, England, treating wastewater for approximately 8,209 people. The plant operates under UK regulations and discharges into the local environment near the coast.
ASHINGTON LONDON ROAD STW serves Horsham, England, treating wastewater for approximately 4,663 people. The plant operates under UK regulations, discharging into the local water environment.
Storrington STW serves approximately 7,800 people in West Sussex, England. The plant discharges treated wastewater into the local water environment, contributing to the protection of the River Arun catchment.
HAILSHAM NORTH STW serves Wealden, East Sussex, England, treating wastewater for approximately 14,856 people. The plant discharges into local watercourses within the Cuckmere River catchment.
HAILSHAM SOUTH STW serves Wealden, England, treating wastewater for approximately 30,000 people. The plant operates under UK regulations implementing the EU Urban Waste Water Treatment Directive.
Tangmere STW serves the village of Tangmere near Chichester, West Sussex, England. The plant treats wastewater from a population of approximately 4,873 and discharges into the local water environment.
Eastbourne STW is a wastewater treatment plant serving approximately 116,000 people in Eastbourne, England. It operates under the UK's implementation of the EU Urban Waste Water Treatment Directive.
Shoreham & Portslade STW serves Adur, England, treating wastewater for approximately 54,377 people. The plant operates under the UK's urban wastewater regulations, discharging into the English Channel via the River Adur estuary.
East Hastings Bexhill STW serves 138,587 people in St Leonards, England. The plant operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
Littlehampton and Bognor STW serves over 130,000 people in England, discharging treated wastewater into the English Channel via coastal outfalls. The plant operates under the UK's implementation of the EU Urban Waste Water Treatment Directive.
Luxford Ln East Grinstead STW serves approximately 9,390 people in Mid Sussex, England. The plant operates under the UK's wastewater regulatory framework, discharging treated effluent into local watercourses.
Horsham STW serves approximately 79,000 people in Horsham, West Sussex, England. The plant discharges treated wastewater into local watercourses within the River Arun catchment.
Pulborough STW serves Horsham, England, treating wastewater for approximately 8,538 people. The plant operates under UK regulations aligned with the EU Urban Waste Water Treatment Directive.
Petersfield STW serves approximately 20,400 people near Chichester, England. The plant operates under the UK's urban wastewater treatment 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 plants on this page, the most-referenced operator is Southern Water. UtilityRadar's records show 6 plants linked to this operator.
Among the indexed plants, SOUTH AMBERSHAM STW has the highest designed capacity at 1 m3/day.