1,887 plants indexed. Showing 448 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.
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.
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.
TALGARTH STW BRONLLYS ROAD is a secondary treatment plant serving Bronllys, Powys, Wales. It treats wastewater for approximately 2,911 people with a designed capacity of 3,081 m³/day.
Rhayader STW is a secondary treatment plant serving approximately 2,105 people in Rhayader, Powys, Wales. It discharges treated wastewater into the local river system within the Wye catchment.
PRESTEIGNE STW CLATTERBROOM STW is a secondary treatment plant serving Presteigne, Wales, UK. It treats wastewater for a population of 2,262 with a designed capacity of 2,589 m³/day and a discharge volume of 503.6 m³/day.
Builth Wells STW STW is a secondary treatment plant in Llanelwedd, Wales, serving approximately 3,034 people. It discharges treated wastewater into the local catchment, contributing to the protection of the River Wye and downstream environments.
LLANIDLOES STW is a secondary treatment plant serving approximately 3,280 people in Llanidloes, Wales. It discharges 730.24 m³/day of treated wastewater, with a designed capacity of 3,500 m³/day.
PANT PLAS CERRIG STW FE is a secondary treatment plant in Llandysilio, Wales, serving a population of 2,192. It discharges 488.02 cubic meters of treated wastewater daily.
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.
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.
KIRKBY MALZEARD STW is a secondary treatment plant serving approximately 2,100 people in Kirkby Malzeard, North Yorkshire, England. It discharges treated wastewater into the local water environment.
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.
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 18 plants linked to this operator.
Among the indexed plants, LAMPETER STW STW has the highest designed capacity at 8,678 m3/day.