1,887 plants indexed. Showing 946 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.
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.
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.
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.
Downton STW serves approximately 5,000 people in Downton, Wiltshire, England. The plant discharges treated wastewater into the local water environment, contributing to the protection of the River Avon catchment.
DORCHESTER STW serves approximately 33,000 people in Dorchester, England. The plant discharges treated wastewater into the local water environment, supporting the River Frome catchment.
DEVIZES STW is a municipal wastewater treatment plant serving approximately 14,267 people in Devizes, Wiltshire, England. It operates under the UK's water quality regulations.
Crewkerne East STW is a wastewater treatment plant serving approximately 6,830 people in Crewkerne, Somerset, England. It operates under the UK's regulatory framework for wastewater treatment.
Corfe Mullen STW serves the Pamphill area in Dorset, England, treating wastewater for approximately 7,775 people. The plant operates under UK regulations and discharges into the local water environment.
Chippenham STW serves approximately 37,000 people in Chippenham, Wiltshire, England. The plant operates under the UK's implementation of the EU Urban Waste Water Treatment Directive.
CHEW STOKE STW is a wastewater treatment plant in Chew Stoke, England, serving approximately 7,000 people. It operates under UK regulations, discharging treated effluent into local watercourses.
CHEDDAR STW serves the village of Cheddar in Somerset, England, with a designed capacity of 1.00. The plant treats wastewater for a population of 8,779 under UK environmental regulations.
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 1 plant linked to this operator.
Among the indexed plants, MARTOCK STW has the highest designed capacity at 1 m3/day.