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.
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.
OLDHAM STW is a wastewater treatment plant serving approximately 155,760 people in Chadderton, Greater Manchester, England. It operates under the UK's regulatory framework for large agglomerations.
NORTHWICH STW serves approximately 58,000 people in Northwich, England. The plant operates under the UK's wastewater regulatory framework, discharging treated effluent into the local water environment.
NORTHBANK STW in Salford, England serves approximately 17,773 people. The plant discharges into the Manchester Ship Canal, part of the Mersey Basin, ultimately flowing into the Irish Sea.
Hoylake NORTH WIRRAL MEOLS STW serves approximately 80,000 people in Hoylake, England, as part of the Wirral wastewater network. The plant discharges treated effluent into the Irish Sea via local watercourses.
NANTWICH STW serves approximately 18,530 people in Nantwich, England. The plant operates under the UK's regulatory framework for wastewater treatment, discharging into the local water environment.
MOSSLEY STW is a wastewater treatment plant in Tameside, Greater Manchester, England, serving approximately 12,648 people. It operates under the UK's regulatory framework for wastewater treatment.
Morecambe STW serves approximately 35,677 people in England, United Kingdom. The plant is located near the coast and operates under the UK's wastewater regulatory framework.
MILNTHORPE STW is a wastewater treatment plant serving Sandside, England, United Kingdom. It treats wastewater for a population of approximately 8,628.
MILLOM STW serves approximately 7,739 people in Millom, Cumberland, England. The plant is located within 50 km of the coast and discharges into local watercourses.
Middlewich STW is a wastewater treatment plant serving approximately 15,786 people in Middlewich, Cheshire East, England. It operates under the UK's regulatory framework for wastewater treatment.
Mere Brow STW serves the West Lancashire area of England, treating wastewater for approximately 4,522 people. The plant operates under UK regulations, discharging treated effluent into local waterways.
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 5 plants linked to this operator.
Among the indexed plants, RUNCORN STW has the highest designed capacity at 1 m3/day.