1,887 plants indexed. Showing 135 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.
Killinchy wastewater treatment plant serves the Balloo area in Northern Ireland, United Kingdom. It operates under the EU Urban Waste Water Treatment Directive, serving a population of approximately 5,800.
Annesborough wastewater treatment plant serves Annsborough, Northern Ireland, UK. It is located inland but within 50 km of the coast, treating wastewater for a population of approximately 5,877.
Donneybrewer wastewater treatment plant serves Derry/Londonderry, Northern Ireland, with a population equivalent of 5,213. The facility is located near the River Foyle and operates under UK and EU wastewater regulations.
Ballykelly wastewater treatment plant serves approximately 4,800 residents in County Londonderry, Northern Ireland. The facility discharges into local waterways within the Foyle catchment, supporting water quality in the region.
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.
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.
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.
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.
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.
Penicuik WWTW serves approximately 12,685 people in Penicuik, Midlothian, Scotland. The plant operates under UK wastewater regulations, discharging treated effluent into local watercourses within the River Esk catchment.
Newton Stewart STW serves the town of Newton Stewart in Dumfries and Galloway, Scotland, treating wastewater for approximately 5,020 people. The plant operates under UK regulations and discharges into the local water environment.
LOCKERBIE STW serves Lochmaben, Scotland, treating wastewater for approximately 5,861 people. The plant operates under UK regulations, discharging into local watercourses within the Dumfries and Galloway region.
Linlithgow WWTW serves approximately 13,951 people in Whitecross, Scotland. The plant operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
Kirkcaldy WWTW is a municipal wastewater treatment plant serving approximately 61,238 people in Kirkcaldy, Fife, Scotland. It operates under the UK's regulatory framework for wastewater treatment.
HADDINGTON WWTW serves approximately 12,000 people in Haddington, East Lothian, Scotland. The plant discharges treated wastewater into the local water environment, contributing to the protection of the Firth of Forth.
Guardbridge WWTW serves Leuchars, Fife, Scotland, treating wastewater for approximately 4,576 people. The plant is located near the coast and operates under UK wastewater regulations.
GRETNA STW serves approximately 5,048 people in Gretna, Scotland. The plant operates under UK wastewater regulations, discharging treated effluent into the local water environment.
Fort William New WWTP serves approximately 14,700 people in the Highland region of Scotland, United Kingdom. The plant discharges treated wastewater into the local water environment, contributing to the protection of the River Lochy and downstream ar
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.
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 16 plants linked to this operator.
Among the indexed plants, Killinchy has the highest designed capacity at 1 m3/day.