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.
Killearn Waste Water Treatment Works is a secondary treatment plant serving 1,607 people in Dumgoyne, Scotland. It discharges 357.77 m³/day of treated effluent into the local water environment.
HARTHILL STW is an advanced wastewater treatment plant serving Whitburn, Scotland. It treats wastewater for approximately 4,040 people with a designed capacity of 6,500 m³/day.
FASLANE STW is a secondary treatment plant serving 3,500 people at HM Naval Base Clyde in Garelochhead, Scotland. It discharges 779.22 cubic meters of treated wastewater daily.
DRUMNADROCHIT WWTP is a secondary treatment plant serving Lewiston, Scotland. It discharges treated wastewater into Urquhart Bay on Loch Ness, part of the River Ness catchment.
BLACKFORD WWTW is a secondary treatment plant serving 1,483 people in Blackford, Scotland. It discharges treated wastewater into the local catchment, ultimately draining to the North Sea.
AVOCH WWTW is an advanced wastewater treatment plant serving Avoch, Scotland, United Kingdom. It treats wastewater from a population of 1,455 and discharges treated effluent into the local environment.
Winchburgh WWTW is a secondary treatment plant serving 2,862 people in West Lothian, Scotland. It discharges 637.18 m³/day of treated wastewater near the Union Canal, within 10 km of the coast.
Walkerburn WWTW is a secondary treatment plant serving about 4,452 people in Walkerburn, Scottish Borders, United Kingdom. It discharges 991.17 m³/day of treated wastewater into the local water environment.
Strathpeffer WWTP is a secondary treatment plant serving 1,537 people in Strathpeffer, Scotland. It discharges treated wastewater near the coast, with a designed capacity of 3,000 m³/day.
SOUTHERNESS STW is an advanced wastewater treatment plant serving Southerness, Scotland. It treats wastewater for approximately 3,227 people and discharges 718.44 cubic meters per day.
SANQUHAR STW is a secondary treatment plant serving 2,135 people in Sanquhar, Scotland. It discharges 475.33 m³/day of treated wastewater into the local water environment.
PATNA STW is an advanced wastewater treatment plant in Polnessan, Scotland, serving a population of 2,242. It discharges treated effluent into local watercourses near the coast.
ORMISTON WWTW is an advanced wastewater treatment plant serving Pencaitland, East Lothian, Scotland. It treats wastewater for a population of 3,144 and has a designed capacity of 5,100 cubic meters per day.
OLDMELDRUM WWTP is a secondary treatment plant serving 3,252 people in Oldmeldrum, Scotland. It discharges 724.01 m³/day of treated wastewater into local watercourses.
NEWTOWN ST BOSWELL WWTW is an advanced wastewater treatment plant in Newtown St Boswells, Scottish Borders, Scotland. It serves a population of 1,994 and discharges 443.93 m³/day of treated effluent.
NEWMACHAR WWTP is a secondary treatment plant in Newmachar, Aberdeenshire, Scotland, serving approximately 3,117 people. It discharges treated wastewater near the coast, with a designed capacity of 3,000 cubic meters per day.
Newburgh WWTW is a secondary treatment plant in Fife, Scotland, serving about 2,400 people. It discharges treated wastewater near the coast, operating under UK regulations.
New Cumnock STW is a secondary wastewater treatment plant serving approximately 3,700 people in New Cumnock, East Ayrshire, Scotland. It discharges treated effluent into the local water environment under UK regulatory frameworks.
Muir of Ord New STW is a secondary wastewater treatment plant serving approximately 4,343 people in Muir of Ord, Scotland. It discharges 966.90 m³/day of treated effluent and is located within 10 km of the coast.
MOFFAT STW is a secondary treatment plant serving Moffat, Scotland, with a designed capacity of 5,000 m³/day and a population equivalent of 3,270.
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, HARTHILL STW has the highest designed capacity at 6,500 m3/day.