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.
TYLDESLEY STW is a wastewater treatment plant serving approximately 31,985 people in Wigan, Greater Manchester, England. It operates under the UK's regulatory framework for wastewater treatment.
Tarvin STW is a wastewater treatment plant serving approximately 7,500 people in Tarvin, Cheshire, England. It operates under the UK's regulatory framework for water quality and environmental protection.
STRETFORD STW serves approximately 24,179 people in Trafford, Greater Manchester, England. The plant discharges treated wastewater into the local water system, contributing to the protection of the Manchester Ship Canal and the Mersey Estuary.
STOCKPORT STW serves approximately 176,000 people in Cheadle, Greater Manchester, England. The plant treats wastewater from the Stockport area before discharging into the local river system.
ST HELENS STW is a wastewater treatment plant serving St Helens, England, with a population equivalent of 137,463. It operates under the UK's regulatory framework, discharging treated effluent into local waterways.
SOUTHPORT BANK END STW serves Southport, England, with a population equivalent of 92,889. The plant discharges treated wastewater into the Irish Sea via local watercourses, operating under the UK's urban wastewater treatment regulations.
Skelmersdale STW is a wastewater treatment plant serving approximately 52,539 people in West Lancashire, England. It operates under the UK's regulatory framework for wastewater treatment.
SETTLE STW serves Giggleswick, England, treating wastewater for approximately 8,620 people. The plant operates under the UK's regulatory framework for wastewater treatment.
Liverpool Sandon North Liverpool Docks STW serves over 630,000 people in Liverpool, England. The plant discharges treated wastewater into the River Mersey estuary, which flows into the Irish Sea.
Sandbach STW serves approximately 19,408 people in Sandbach, England. The plant operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
SALE STW is a wastewater treatment plant in Trafford, Greater Manchester, England, serving approximately 69,359 people. It operates under the UK's regulatory framework for wastewater treatment.
Saddleworth STW serves approximately 18,184 people in Oldham, England, as part of the United Kingdom's wastewater infrastructure. The plant operates under UK regulations derived from the EU Urban Waste Water Treatment Directive.
RUNCORN STW serves approximately 83,000 people in Runcorn, England. The plant operates under the UK's wastewater regulatory framework, discharging treated effluent into the local water environment.
ROYTON STW is a municipal wastewater treatment plant serving Royton, Greater Manchester, England. It treats wastewater from approximately 30,495 people under the UK's regulatory framework.
ROSSENDALE STW is a municipal wastewater treatment plant serving approximately 59,777 people in Rossendale, Lancashire, England. It operates under the UK's regulatory framework for wastewater treatment.
ROCHDALE STW serves approximately 198,000 people in Rochdale, Greater Manchester, England. The plant discharges treated wastewater into the local river system, ultimately draining into the Irish Sea.
Preston Clifton Marsh STW serves over 250,000 people in Fylde, Lancashire, England. The plant discharges into the River Ribble estuary, which flows into the Irish Sea, supporting diverse aquatic life.
Preesall Knott End STW is a municipal wastewater treatment plant serving approximately 5,800 people in Wyre, Lancashire, England. It discharges treated effluent into the local water environment near the Irish Sea coast.
PENRITH STW serves approximately 27,417 people in Brougham, England. The plant operates under UK wastewater regulations, discharging treated effluent into local watercourses.
Partington STW serves 8,401 people in Trafford, England, as part of the UK's municipal wastewater infrastructure. The plant discharges treated effluent into local waterways 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 United Utilities. UtilityRadar's records show 8 plants linked to this operator.
Among the indexed plants, TYLDESLEY STW has the highest designed capacity at 1 m3/day.