1,887 plants indexed. Showing 1,379 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.
Richill wastewater treatment plant serves Armagh, Northern Ireland, with secondary treatment for a population of 3,267. It discharges 727.35 megaliters annually and has a designed capacity of 4,914.00.
Rathfriland wastewater treatment plant serves the Newry area in Northern Ireland, UK. It provides secondary treatment for a population of approximately 3,977 and has a designed capacity of 4,000 m³/day.
Newtownstewart wastewater treatment plant in County Tyrone, Northern Ireland serves about 2,170 people with advanced treatment, discharging 483.12 megaliters annually.
Moy wastewater treatment plant serves the town of Moy in County Tyrone, Northern Ireland. It provides secondary treatment for a population of approximately 3,448 and has a designed capacity of 3,300 cubic meters per day.
Moneymore wastewater treatment plant serves approximately 2,800 people in County Londonderry, Northern Ireland. The secondary treatment facility discharges treated effluent into local waterways under UK regulations.
Markethill wastewater treatment plant serves 2,526 people in County Armagh, Northern Ireland. It provides secondary treatment and discharges treated effluent into local waterways within the Neagh Bann river basin.
Maghaberry wastewater treatment plant serves Broomhedge, County Down, Northern Ireland. It provides secondary treatment for a population of 4,225, discharging 940.63 m³/day.
Kilrea wastewater treatment plant serves 2,799 people in County Londonderry, Northern Ireland. It provides secondary treatment and discharges treated effluent into the River Bann catchment.
Irvinestown wastewater treatment plant in County Fermanagh, Northern Ireland, serves a population of 2,669 with advanced treatment. It discharges 594.21 cubic meters of treated effluent daily.
Gilford wastewater treatment plant in County Down, Northern Ireland serves about 2,447 people with advanced treatment. It discharges 544.79 megaliters annually and operates under the EU Urban Waste Water Treatment Directive.
Fivemiletown wastewater treatment plant in County Fermanagh, Northern Ireland, serves a population of 2,163 with secondary treatment. It discharges 481.56 cubic meters per day and has a designed capacity of 2,647 cubic meters per day.
Draperstown wastewater treatment plant in Northern Ireland serves approximately 3,275 people with secondary treatment. It discharges treated effluent into local waterways, supporting the region's water quality under UK regulations.
Crossmaglen Liscalgot is a secondary wastewater treatment plant serving Crossmaglen, Northern Ireland. It has a designed capacity of 3,800 m³/day and serves a population of 2,908.
TYNDRUM wastewater treatment plant serves Ardormie, Scotland, treating sewage for 567 people. It operates under secondary treatment standards within the UK regulatory framework.
Coldstream wastewater treatment plant serves Lennel, Scottish Borders, United Kingdom. This secondary treatment facility handles a population equivalent of 2,413 and discharges treated effluent into the local water environment.
STRATHBLANE STW is a secondary treatment plant serving Blanefield, Scotland. It treats wastewater for approximately 1,860 people with a designed capacity of 4,000 m³/day.
Spean Bridge/Roybridge WwTW is a secondary treatment plant serving 1,015 people in Spean Bridge, Scotland. It discharges treated wastewater into the local water environment under UK regulations.
Slamannan Waste Water Treatment Works is a secondary treatment plant in Falkirk, Scotland, serving approximately 1,574 people. It discharges 350.43 cubic meters of treated wastewater daily, with a designed capacity of 1,933.00 cubic meters.
Newtonmore WWTP is a secondary treatment plant serving the village of Newtonmore in the Scottish Highlands. It discharges treated wastewater into the River Spey catchment, supporting the local aquatic ecosystem.
Muirkirk STW is a secondary wastewater treatment plant serving approximately 1,795 people in East Ayrshire, Scotland. It discharges treated effluent into local watercourses within the River Ayr 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 NI Water. UtilityRadar's records show 13 plants linked to this operator.
Among the indexed plants, MUIRKIRK STW has the highest designed capacity at 5,000 m3/day.