1,887 plants indexed. Showing 786 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.
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.
Whitland WWTW is a secondary treatment plant serving 1,925 people in Carmarthenshire, Wales. It discharges 428.57 m³/day of treated wastewater within 10 km of the coast.
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.
Neyland WWTW is a secondary treatment plant in Pembrokeshire, Wales, serving approximately 4,142 people. It discharges treated wastewater near the Cleddau Estuary, a coastal waterbody.
FFAIRFACH WWTW is a secondary treatment plant serving Llandeilo, Wales, UK. It treats wastewater for approximately 2,895 people with a designed capacity of 3,472 m³/day and an average discharge volume of 644.53 m³/day.
DREFACH_VELI STW is a secondary treatment plant in Waungilwen, Carmarthenshire, Wales, serving approximately 2,445 people. It discharges 544.34 m³/day of treated wastewater, with a designed capacity of 2,519 m³/day.
Crosshands S STW is an advanced wastewater treatment plant serving Cross Hands, Wales, UK. It treats wastewater for a population of 3,261 and discharges 726.01 cubic meters per day.
Resolven STW Storm Tanks Neath STW is a secondary treatment plant serving Melincourt, Wales. It discharges treated wastewater near the coast, with a designed capacity of 2988 m³/day.
ABERGAVENNY STW is a secondary wastewater treatment plant in Glangrwyney, Wales, serving approximately 3,182 people. It discharges 708.42 cubic meters of treated effluent daily, with a designed capacity of 3,319 cubic meters.
USK STW Graig Olway Farm Llangview STW is a secondary treatment plant serving 2,877 people in Llanllowell, Wales. It discharges 640.52 m³/day of treated wastewater near the coast.
RAGLAN STW CHEPSTOW ROAD RAGLAN STW is a closed secondary treatment plant in Raglan, Wales, serving 1,210 people. It discharged 269.39 m³/day with a designed capacity of 1,300 m³/day.
Creigiau Sewage Treatment Works (STW) serves the Creigiau area of Cardiff, Wales, treating wastewater for approximately 2,500 residents with secondary treatment before discharge.
DROPE STW Westbury Homes Glamorgan STW is a secondary treatment plant in Cardiff, Wales, serving approximately 2,011 people. It discharges treated wastewater near the coast, operating under UK regulations.
RHYDLAFAR ST STW is a secondary wastewater treatment plant serving 2,840 people in Cardiff, Wales, United Kingdom. It discharges 632.28 cubic meters of treated effluent daily.
ST ASAPH STW in St Asaph, Wales, is an advanced treatment plant serving 4,239 people. It discharges 943.75 m³/day of treated wastewater, with a designed capacity of 4,536 m³/day, located within 10 km of the coast.
Wheldrake STW is a secondary treatment plant serving 2,239 people in Wheldrake, England. It discharges 498.48 cubic meters of treated wastewater daily, operating under UK regulations.
HMP Lindholme and Moorland is a secondary wastewater treatment plant serving a population of 2,361 in Doncaster, England. It discharges treated effluent into local watercourses within the Humber River Basin.
Yeoford STW is a secondary treatment plant in Mid Devon, England, serving a population of 2,071. It discharges 461.08 cubic meters of treated wastewater daily into the local watercourse.
SOUTH MILTON STW is a secondary treatment plant in South Hams, England, serving 1,866 people. It discharges 415.44 m³/day of treated wastewater and is located within 10 km of the coast.
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 Dŵr Cymru / Welsh Water. UtilityRadar's records show 16 plants linked to this operator.
Among the indexed plants, ST ASAPH STW ST ASAPH STW has the highest designed capacity at 4,536 m3/day.