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.
SALFORD STW is a wastewater treatment plant serving approximately 101,668 people in Salford, Greater Manchester, England. It operates under the UK's implementation of the EU Urban Waste Water Treatment Directive.
WORSLEY STW in Salford, England serves approximately 22,500 people. The plant operates under the UK's wastewater regulatory framework, discharging treated effluent into local watercourses.
Workington STW serves approximately 58,739 people in Workington, England, as part of the UK's municipal wastewater infrastructure. The plant is located near the coast of Cumbria, discharging into the Solway Firth.
WINSFORD STW serves approximately 33,773 people in Winsford, England. The plant operates under the UK's wastewater regulatory framework, discharging treated effluent into local watercourses.
Windermere STW in Cartmel Fell, England, serves approximately 10,154 people. The plant operates under the UK's wastewater regulatory framework, discharging into the Lake District watershed.
Wilmslow STW serves the community of Styal, England, treating wastewater for approximately 23,377 people. The plant operates under UK environmental regulations.
WIGTON STW serves Micklethwaite, England, treating wastewater for approximately 8,753 people. The plant operates under UK regulations and discharges into the local water environment.
WIGAN HOSCAR STW serves approximately 375,749 people in West Lancashire, England. The plant operates under the UK's implementation of the EU Urban Waste Water Treatment Directive.
WIDNES STW serves approximately 89,286 people in Widnes, England, as part of the Halton wastewater infrastructure. The plant discharges into the Mersey Estuary, a key ecological zone in the Liverpool City Region.
Whitehaven STW in Parton, England serves approximately 34,370 people. The plant is located near the coast and operates under UK wastewater regulations.
Whalley STW is a municipal wastewater treatment plant serving approximately 5,076 people in Ribble Valley, Lancashire, England. It operates under UK regulations implementing the EU Urban Waste Water Treatment Directive.
WHALEY BRIDGE STW serves approximately 39,000 people in High Peak, Derbyshire, England. The plant operates under the UK's wastewater regulatory framework, treating sewage from the local community before discharge.
Westhoughton STW is a municipal wastewater treatment plant serving approximately 28,906 people in Westhoughton, Greater Manchester, England. It operates under the UK's water quality regulations, discharging treated effluent into local watercourses.
Weaverham STW is a municipal wastewater treatment plant serving approximately 7,260 people in Weaverham, Cheshire West and Chester, England. It operates under the UK's urban wastewater regulations.
South Warrington STW serves approximately 43,861 people in Warrington, England. The plant operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
North Warrington STW serves approximately 273,537 people in Warrington, England. The plant operates under the UK's implementation of the EU Urban Waste Water Treatment Directive.
Walton Le Dale STW serves approximately 58,258 people in Preston, England, as part of the UK's wastewater infrastructure. The plant operates under the Urban Waste Water Treatment Regulations, which implement the EU Urban Waste Water Treatment Directi
URMSTON STW is a municipal wastewater treatment plant serving Salford, England, United Kingdom. It treats wastewater for approximately 32,166 people and operates under the EU Urban Waste Water Treatment Directive.
ULVERSTON STW is a municipal wastewater treatment plant serving approximately 16,729 people in Ulverston, England. The facility operates under the UK's regulatory framework for wastewater treatment.
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.
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 7 plants linked to this operator.
Among the indexed plants, WORSLEY STW has the highest designed capacity at 1 m3/day.