1,887 plants indexed. Showing 369 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.
DALSCONE STW new is a secondary wastewater treatment plant in Dumfries, Scotland, serving approximately 3,800 people. It discharges 846.90 megalitres annually and has a designed capacity of 6,173.00 megalitres.
Dalmellington STW is a secondary treatment plant serving 3,564 people in East Ayrshire, Scotland. It discharges treated wastewater into local watercourses, operating under UK environmental regulations.
COMRIE WWTP is a secondary treatment plant serving 2,273 people in Crieff, Scotland. It discharges 506.05 megalitres annually and operates under the EU Urban Waste Water Treatment Directive.
Catrineholm STW is a secondary treatment plant serving Catrine, East Ayrshire, Scotland. It treats wastewater for a population of 2,421 with a designed capacity of 4,000 m³/day.
Carstairs Junction STW is a secondary treatment plant serving approximately 2,945 people in South Lanarkshire, Scotland. It discharges treated wastewater into the local water environment under UK regulatory frameworks.
BLACKWOOD STW is a secondary wastewater treatment plant serving Auchenheath, Scotland, with a population equivalent of 4,042. It discharges approximately 900 m³/day and has a designed capacity of 4,071 m³/day.
Biggar STW is a secondary treatment plant in Thankerton, Scotland, serving about 3,011 people. It discharges 670.35 m³/day of treated wastewater, with a designed capacity of 3,700 m³/day.
Balfron WWTW is a secondary treatment plant serving approximately 1,783 people in Balfron, Scotland. It discharges treated wastewater into the local water environment, supporting the Forth River Basin.
Annandale Water MSA STW is a secondary treatment plant serving Johnstonebridge, Scotland. It treats wastewater for approximately 2,000 people with a designed capacity of 2,000 m³/day.
ALYTH WWTP is a secondary treatment plant serving 2,832 people in Alyth, Scotland. It discharges 630.50 m³/day of treated wastewater into the local water environment.
ALFORD WWTP is a secondary treatment plant serving approximately 2,779 people in Alford, Aberdeenshire, Scotland. It discharges 618.70 m³/day of treated wastewater, with a designed capacity of 3,250 m³/day.
Corwen WWTW STW is a secondary treatment plant serving approximately 1,760 people in Corwen, Wales. It discharges treated wastewater into the local water environment under UK regulations.
Llangollen STW is a secondary treatment plant serving 3,436 people in Llangollen, Wales. It discharges treated wastewater into the River Dee basin, supporting local water quality.
BALA WWTW STW is a secondary treatment plant serving Llangywer, Gwynedd, Wales. It discharges treated wastewater into the local catchment, ultimately draining to the Dee Estuary and Irish Sea.
Llanrwst STW is a secondary treatment plant serving approximately 3,823 people in Conwy, Wales. It discharges treated wastewater into the local water environment, operating under UK regulations.
Lampeter STW STW is a secondary wastewater treatment plant serving approximately 3,165 people in Lampeter, Ceredigion, Wales. It discharges 704.64 cubic meters of treated effluent daily.
Llandysul WWTW is a secondary treatment plant serving 2,012 people in Pont-Tyweli, Wales. It discharges 447.94 m³/day of treated wastewater into the local catchment.
Llandovery Wastewater Treatment STW is a secondary treatment plant serving the town of Llandovery in Carmarthenshire, Wales. It discharges treated effluent into local waterways, supporting the region's water quality.
ADPAR WWTW serves Newcastle Emlyn, Wales, treating wastewater for approximately 1,883 people. The plant operates at secondary treatment level under UK regulations, discharging into local watercourses.
Llanybydder WWTW is a secondary treatment plant in Ceredigion, Wales, serving around 1,991 people. It discharges treated wastewater into local watercourses within the Teifi River 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 11 plants linked to this operator.
Among the indexed plants, LAMPETER STW STW has the highest designed capacity at 8,678 m3/day.