1,887 plants indexed.
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.
DUNNSWOOD STW serves Castlecary, Scotland, treating wastewater for approximately 31,858 people. The plant operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
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.
Dunblane WWTW is a municipal wastewater treatment plant serving approximately 9,568 people in Dunblane, Scotland, United Kingdom. The plant discharges treated effluent into the local water environment under Scottish regulatory oversight.
DINGWALL WWTP serves the town of Dingwall in the Scottish Highlands, treating wastewater for approximately 7,500 residents. The plant discharges into the local water environment under Scottish regulatory oversight.
Denny WWTW is a municipal wastewater treatment plant serving approximately 11,700 people in Denny, Falkirk, Scotland. The facility operates under UK regulations and discharges into the local water environment.
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.
Dalderse WWTW serves Falkirk, Scotland, treating wastewater for approximately 93,000 people. The plant is located near the Forth and Clyde Canal and operates under UK and EU wastewater regulations.
Dalbeattie STW is a municipal wastewater treatment plant serving approximately 4,820 people in Dalbeattie, Scotland. It operates under UK regulations and discharges treated effluent into the local water environment.
CUPAR WWTW is a municipal wastewater treatment plant serving approximately 14,780 people in Cupar, Fife, Scotland. It operates under UK regulations implementing the EU Urban Waste Water Treatment Directive.
CRIEFF WWTP serves the town of Crieff in Perth and Kinross, Scotland, with a population equivalent of 9,336. The plant operates under the UK's regulatory framework for wastewater treatment.
COWIE WWTW STIRLING serves the Throsk area in Stirling, Scotland, treating wastewater for approximately 8,898 people. The plant operates under UK regulations and discharges into the local water environment.
Coursington STW serves Motherwell, Scotland, treating wastewater for approximately 7,500 residents. The plant discharges into the local water system under UK environmental regulations.
Coupar Angus WWTP serves approximately 10,250 people in Perth and Kinross, Scotland. The plant operates under UK wastewater regulations and discharges treated effluent into the local water environment.
Carbarns STW serves Motherwell, Scotland, treating wastewater for approximately 48,000 people. The plant operates under the UK's regulatory framework for urban wastewater treatment.
Caldercruix STW is a closed secondary treatment plant in Plains, North Lanarkshire, Scotland. It served the local population before decommissioning.
Brechin WWTP serves approximately 10,400 people in Brechin, Angus, Scotland. The plant operates under UK wastewater regulations and discharges into the local water environment.
Bowhouse WWTW serves the village of Dunshalt in Fife, Scotland, treating wastewater for approximately 5,500 residents. The plant operates under UK and Scottish environmental regulations.
BOTHWELLBANK STW serves approximately 25,000 people in Bothwell, Scotland. The plant operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this size.
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 20 plants linked to this operator.
Among the indexed plants, CALDERCRUIX STW has the highest designed capacity at 3,500 m3/day.