1,887 plants indexed. Showing 1,266 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.
OXTED STW serves approximately 13,895 people in Oxted, Surrey, England. The plant operates under the UK's wastewater regulatory framework, discharging treated effluent into local watercourses.
Canterbury STW serves approximately 62,000 people in Canterbury, Kent, England. The plant operates under the UK's wastewater regulatory framework, discharging treated effluent into the local water environment.
SITTINGBOURNE STW serves Swale, Kent, England, treating wastewater for approximately 66,675 people. The plant operates under the UK's implementation of the EU Urban Waste Water Treatment Directive.
Whitewall Creek STW in Upper Upnor, England serves approximately 33,576 people. The plant operates under UK regulations and discharges treated wastewater into the local water environment.
Maidstone and Aylesford STW serves approximately 120,000 people in Tonbridge and Malling, Kent, England. The plant operates under the UK's implementation of the EU Urban Waste Water Treatment Directive.
Redgate Mill STW serves Wealden, England, treating wastewater for approximately 21,344 people. The plant operates under UK regulations aligned with the EU Urban Waste Water Treatment Directive.
DOVER_FOLKSTONE STW serves approximately 108,500 people in Dover, England. The plant operates under the UK's implementation of the EU Urban Waste Water Treatment Directive, ensuring treated effluent meets environmental standards.
Hythe STW serves approximately 19,681 people in England, United Kingdom. The plant is located within 50 km of the coast and discharges treated wastewater into the local watershed.
ASHFORD STW serves Ashford, Kent, England, treating wastewater for over 104,000 people. The plant operates under the UK's implementation of the EU Urban Waste Water Treatment Directive.
Chatham and Gillingham STW serves over 248,000 people in Gillingham, England. The plant discharges treated wastewater into the Medway estuary, contributing to the Thames Basin's water quality management.
QUEENBOROUGH STW serves approximately 41,000 people in Swale, Kent, England. The plant discharges treated wastewater into local waterways within the Thames Estuary catchment.
HERNE BAY STW in Canterbury, England serves approximately 41,204 people. It operates under the UK's wastewater regulations, discharging treated effluent into local watercourses.
RAMSGATE SANDWICH DEAL STW serves Thanet, Kent, England, treating wastewater for approximately 87,714 people. The plant discharges into local watercourses within the Stour catchment, ultimately reaching the North Sea.
Tunbridge Wells South STW serves approximately 30,000 people in Wealden, East Sussex, England. The plant discharges treated wastewater into local watercourses within the Medway catchment.
TONBRIDGE STW serves approximately 47,712 people in Tonbridge and Malling, Kent, England. The plant operates under the UK's wastewater regulatory framework, treating sewage before discharge into local watercourses.
Broadstairs_Margate Out CSM Weatherlees B is a wastewater treatment plant serving Thanet, Kent, England. It operates under the UK's regulatory framework for urban wastewater treatment.
Sandown Ventnorbembridge STW serves over 137,000 people on the Isle of Wight, England. The plant is located near the coast and operates under UK wastewater regulations.
EASTLEIGH STW serves approximately 97,000 people in Eastleigh, Hampshire, England. The plant discharges treated wastewater into the local water environment, contributing to the protection of the River Itchen and Southampton Water.
Southampton North East Portswood STW serves approximately 74,000 people in Southampton, England. The plant discharges treated wastewater into the River Itchen, which flows into Southampton Water and the Solent.
Totton Marchwood Hythe Cadnam STW serves the New Forest area in Hampshire, England, treating wastewater for approximately 75,000 people. The plant operates under UK regulations aligned with the EU Urban Waste Water Treatment Directive.
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 1 plant linked to this operator.
Among the indexed plants, OXTED STW has the highest designed capacity at 1 m3/day.