1,887 plants indexed. Showing 1,405 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.
BOURN STW is a secondary treatment plant in Bourn, South Cambridgeshire, England, serving approximately 3,000 people. It discharges treated wastewater into local watercourses within the Great Ouse catchment.
Bottisham STW is a secondary treatment plant in East Cambridgeshire, England, serving approximately 3,912 people. It discharges treated wastewater into local watercourses, supporting the region's water quality.
Billinghay STW is a secondary wastewater treatment plant in North Kesteven, Lincolnshire, England, serving a population of 2,499. It discharges treated effluent into local watercourses within the Anglian Water region.
BASSINGHAM STW is a secondary wastewater treatment plant in North Kesteven, England, serving 2,286 people. It discharges treated effluent into local watercourses, supporting the River Witham catchment.
BALSHAM STW is a secondary treatment plant serving 2,254 people in South Cambridgeshire, England. It discharges 501.82 m³/day of treated wastewater into local watercourses.
Badwell Ash STW is a secondary treatment plant in Mid Suffolk, England, serving approximately 2,200 people. It discharges 489.57 cubic meters of treated wastewater daily.
ASHBROOK STW is a secondary treatment plant in North Hertfordshire, England, serving 3,611 people. It discharges treated wastewater into the local water environment.
Lifford WWTP is a primary treatment plant serving 2,262 people in County Donegal, Ireland. It discharges 503.60 m³/day of treated wastewater into the local water environment.
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.
Ballynacor wastewater treatment plant serves approximately 102,500 people in Derrymacash, Northern Ireland. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
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.
Waringstown wastewater treatment plant serves County Down, Northern Ireland, treating wastewater for approximately 6,333 people. The facility operates under UK and EU regulatory frameworks for municipal wastewater treatment.
Strabane wastewater treatment plant serves Sion Mills in County Tyrone, Northern Ireland. It treats wastewater for approximately 20,305 people under the EU Urban Waste Water Treatment Directive.
Saintfield wastewater treatment plant serves Aldford, England, UK. It has a designed capacity of 1.00 and serves a population of 5048.
Omagh wastewater treatment plant serves Newtownstewart, Northern Ireland, treating wastewater for approximately 38,720 people. The facility operates under UK and EU regulatory frameworks for wastewater management.
Newtownbreda wastewater treatment plant serves approximately 40,000 people in Belfast, Northern Ireland. It operates under the EU Urban Waste Water Treatment Directive, ensuring compliance with environmental standards for inland discharge.
Moira wastewater treatment plant serves the town of Moira in Northern Ireland, United Kingdom. It provides essential sanitation for approximately 5,085 residents under the EU Urban Waste Water Treatment Directive.
Maghera wastewater treatment plant serves the town of Maghera in Northern Ireland, United Kingdom. It operates under the EU Urban Waste Water Treatment Directive, which governs treatment standards for agglomerations of this scale.
Lisnaskea wastewater treatment plant serves approximately 6,400 people in County Fermanagh, Northern Ireland. It discharges into the local water environment 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 NI Water. UtilityRadar's records show 11 plants linked to this operator.
Among the indexed plants, BILLINGHAY STW has the highest designed capacity at 4,039 m3/day.