1,887 plants indexed. Showing 946 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.
Antrim Milltown wastewater treatment plant serves approximately 66,254 people in Antrim, Northern Ireland. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
CASTLE DOUGLAS New STW serves approximately 4,949 people in Rhonehouse, Dumfries and Galloway, Scotland. The plant operates under the UK's wastewater regulatory framework, with a designed capacity of 1.00.
NEWPORT and TAYPORT STW NEW serves Newport-on-Tay, Scotland, treating wastewater for approximately 8,335 people. The plant is located near the Firth of Tay and operates under UK regulations.
Banchory STW serves approximately 8,500 people in Banchory, Aberdeenshire, Scotland. The plant discharges treated wastewater into the River Dee, a key salmon river in the region.
Whitburn WWTW is a wastewater treatment plant serving approximately 12,568 people in Whitburn, West Lothian, Scotland. It operates under the UK's regulatory framework for wastewater treatment.
Valleyfield WWTW serves High Valleyfield, Fife, Scotland, treating wastewater for approximately 8,666 people. The plant is located within 50 km of the coast and discharges into the local water environment.
UNDERWOOD STW serves Auchinleck, Scotland, treating wastewater for approximately 21,393 people. The plant operates under UK regulations aligned with the EU Urban Waste Water Treatment Directive.
Turriff WWTP serves approximately 7,594 people in Turriff, Aberdeenshire, Scotland. The plant discharges treated wastewater into the local water environment under Scottish regulatory oversight.
Tillicoultry WWTW serves approximately 6,600 people in Benview, Clackmannanshire, Scotland. The plant discharges treated wastewater into the local water environment under Scottish regulatory oversight.
TAIN WWTP serves the town of Tain in the Scottish Highlands, treating wastewater for approximately 4,823 residents. The plant discharges into the Dornoch Firth, a coastal inlet of the North Sea.
SWINSTIE STW serves Bellside, North Lanarkshire, Scotland, treating wastewater for approximately 11,458 people. The plant operates under UK regulations aligned with the EU Urban Waste Water Treatment Directive.
Strathaven STW is a municipal wastewater treatment plant serving approximately 7,700 people in Strathaven, South Lanarkshire, Scotland. It operates under UK regulations implementing the EU Urban Waste Water Treatment Directive.
STONEHOUSE STW is a wastewater treatment plant serving Stonehouse, South Lanarkshire, Scotland. It treats wastewater for a population of 5,289 and discharges into the local water environment.
Stirling WWTW serves over 73,000 people in Stirling, Scotland. The plant discharges treated wastewater into the River Forth, supporting the local water environment.
STEWARTON STW serves approximately 7,200 people in Stewarton, East Ayrshire, Scotland. The plant operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this size.
SPRINGFIELD WWTW serves the town of Springfield in Fife, Scotland, treating wastewater for approximately 7,000 residents. The plant discharges into the local water environment under Scottish regulatory oversight.
South Queensferry WWTW serves approximately 8,590 people in South Queensferry, Scotland. The plant discharges treated wastewater into the Firth of Forth, a major estuary on Scotland's east coast.
Skellyton STW serves Larkhall, Scotland, treating wastewater for approximately 16,200 people. The plant operates under UK regulations aligned with the EU Urban Waste Water Treatment Directive.
SHOTTS STW serves the town of Shotts in North Lanarkshire, Scotland, treating wastewater for approximately 9,684 people. The plant operates under UK and Scottish water quality regulations.
SELKIRK WWTW serves approximately 7,200 people in Selkirk, Scottish Borders, United Kingdom. The plant discharges treated wastewater into the local water environment, supporting the River Tweed catchment.
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 19 plants linked to this operator.
Among the indexed plants, Antrim Milltown has the highest designed capacity at 1 m3/day.