1,887 plants indexed. Showing 476 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.
Dunfermline STW serves approximately 77,678 people in North Queensferry, Fife, Scotland. The plant operates under UK wastewater regulations and discharges treated effluent into the Firth of Forth.
Dalmuir PFI Dalmuir WWTW serves approximately 544,000 people in Erskine, Scotland. The plant operates under the UK's regulatory framework for wastewater treatment.
Dalmarnock STW serves over 230,000 people in Rutherglen, Scotland, as part of the region's municipal wastewater infrastructure. The plant operates under UK regulations derived from the EU Urban Waste Water Treatment Directive.
DALDOWIE STW in Cambuslang, Scotland serves approximately 270,000 people. The plant operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
BO NESS WWTW is a wastewater treatment plant serving Muirhouses, Falkirk, Scotland. It treats wastewater for a population of approximately 16,168 and discharges into the local water environment.
Banff Macduff WWTW Moray PFI serves Macduff, Scotland, treating wastewater for approximately 12,133 people. The plant operates under the EU Urban Waste Water Treatment Directive, ensuring environmental protection for the local area.
ARDOCH STW serves Dumbarton, Scotland, treating wastewater for approximately 65,631 people. The plant operates under UK regulations and discharges into the local water environment.
Annan Kenziels STW serves approximately 13,145 people in Annan, Dumfries and Galloway, Scotland. The plant discharges treated wastewater into the Solway Firth via local watercourses.
Alloa WWTW is a municipal wastewater treatment plant serving approximately 45,455 people in Alloa, Scotland. It operates under the UK's regulatory framework for wastewater treatment.
Allanfearn WWTP serves Inverness, Scotland, treating wastewater for approximately 80,000 people. The plant discharges into the Moray Firth, a coastal environment in the North Sea.
Connah's Quay STW serves Shotton, Wales, treating wastewater for approximately 18,104 people. The plant operates under UK regulations and discharges into the Dee Estuary.
GREENFIELD STW serves approximately 15,140 people in Greenfield, Wales. The plant discharges treated wastewater into the local water environment under UK regulatory frameworks.
Holyhead WWTW STW serves 17,680 people in Llaingoch, Wales. The plant discharges treated wastewater into the Irish Sea via local watercourses, operating under UK environmental regulations.
Port Talbot and Neath STW serves over 123,000 people in Wales, United Kingdom. The plant discharges into local water bodies within 50 km of the coast, supporting regional wastewater management.
LLANELLI STW serves approximately 52,847 people in Carmarthenshire, Wales, as part of the UK's wastewater infrastructure. The plant discharges into the local water environment under regulatory oversight.
Tenby and Saundersfoot STW serves 18,262 people in Cymru/Wales, United Kingdom. The plant discharges treated wastewater into the local coastal environment, supporting water quality in the region.
PEMBROKE STW serves Pembroke Dock, Wales, treating wastewater for approximately 17,713 people. The plant is located near the coast and operates under UK regulations aligned with the EU Urban Waste Water Treatment Directive.
SWANSEA STW serves approximately 169,648 people in Swansea, Wales. The plant discharges treated wastewater into the Bristol Channel, supporting local water quality standards under UK regulations.
Aberystwyth STW serves the Welsh coastal town of Aberystwyth, treating wastewater for approximately 17,858 people. The plant is located within 50 km of the coast and discharges into the local catchment.
Pontyberem WWTW serves around 10,091 people in Pontyberem, Carmarthenshire, Wales. The plant is located within 50 km of the coast and discharges into local watercourses.
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 Scottish Water. UtilityRadar's records show 10 plants linked to this operator.
Among the indexed plants, DUNFERMLINE STW has the highest designed capacity at 1 m3/day.