1,887 plants indexed. Showing 1,266 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.
BOTHWELLBANK STW serves approximately 25,000 people in Bothwell, Scotland. The plant operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this size.
Bonnybridge WWTW serves approximately 15,000 people in Falkirk, Scotland. The plant discharges treated wastewater into the local water environment, contributing to the Forth River Basin's water quality management.
BO NESS WWTW is a wastewater treatment plant serving Muirhouses, Falkirk, Scotland. It treats wastewater for a population of approximately 16,168 and discharges into the local water environment.
Blairgowrie WWTP serves approximately 10,000 people in Blairgowrie and Rattray, Scotland. The plant operates under the UK's implementation of the EU Urban Waste Water Treatment Directive.
Blackburn WWTW serves Seafield, Scotland, treating wastewater from approximately 22,771 people. The plant operates under UK regulations and discharges into the local water environment.
BATHGATE WWTW serves approximately 14,838 people in Bathgate, West Lothian, Scotland. The plant operates under the UK's urban wastewater treatment regulations, discharging treated effluent into local watercourses.
Banff Macduff WWTW Moray PFI serves Macduff, Scotland, treating wastewater for approximately 12,133 people. The plant operates under the EU Urban Waste Water Treatment Directive, ensuring environmental protection for the local area.
AVIEMORE STW serves approximately 5,887 people in Aviemore, Scotland. The plant discharges into the Spey Valley, part of the River Spey catchment, a key salmon river in the United Kingdom.
Auchterarder WWTP serves the Perth and Kinross area in Scotland, United Kingdom, with a designed capacity of 1.00 (units unspecified). The plant treats wastewater for a population of approximately 4,721.
ARMADALE WWTW serves the town of Armadale in West Lothian, Scotland, treating wastewater for approximately 12,674 people. The plant is located within 50 km of the coast and operates under UK and EU wastewater regulations.
ARDOCH STW serves Dumbarton, Scotland, treating wastewater for approximately 65,631 people. The plant operates under UK regulations and discharges into the local water environment.
Annan Kenziels STW serves approximately 13,145 people in Annan, Dumfries and Galloway, Scotland. The plant discharges treated wastewater into the Solway Firth via local watercourses.
ALVA WWTW is a wastewater treatment plant serving Alva, Clackmannanshire, Scotland. It serves a population of approximately 7,000 and has a designed capacity of 1.00.
Alloa WWTW is a municipal wastewater treatment plant serving approximately 45,455 people in Alloa, Scotland. It operates under the UK's regulatory framework for wastewater treatment.
ALLERS STW serves Bothwell, Scotland, treating wastewater for approximately 40,923 people. The plant operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
Allanfearn WWTP serves Inverness, Scotland, treating wastewater for approximately 80,000 people. The plant discharges into the Moray Firth, a coastal environment in the North Sea.
PORTHMADOG STW serves the Welsh town of Porthmadog, treating wastewater for approximately 4,819 people. The plant is located near the coast in Gwynedd, Wales, within 50 km of the sea.
GRESFORD STW serves Pandy, Wales, treating wastewater for approximately 17,669 people. The plant operates under the UK's regulatory framework for wastewater treatment.
Connah's Quay STW serves Shotton, Wales, treating wastewater for approximately 18,104 people. The plant operates under UK regulations and discharges into the Dee Estuary.
MOLD STW serves the town of Mold in Flintshire, Wales, treating wastewater for approximately 20,656 people. The plant operates under UK regulations aligned with the EU Urban Waste Water Treatment Directive.
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 16 plants linked to this operator.
Among the indexed plants, BOTHWELLBANK STW has the highest designed capacity at 1 m3/day.