Wastewater plants in United Kingdom

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.

Plant directory coverage

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.

Treatment levels

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.

Largest plant

The largest plant indexed for United Kingdom is ROTHERWAS STW FIR TREE LANE HFD STW, with a designed capacity of 76,862 m³/day.

About our data

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.

1,266 plants matching filters

WESTBURY STW

Westbury, England

Westbury STW is a municipal wastewater treatment plant serving approximately 22,703 people in Westbury, Wiltshire, England. It operates under the UK's water quality regulations, discharging into local watercourses.

Not Reported 22,703 Low

BURNHAM ON SEA _ HIGHBRIDGE STW

Huntspill, England

Burnham on Sea / Highbridge STW serves around 52,000 people in Huntspill, Somerset, England. The plant discharges treated wastewater into local waterways within the Somerset Levels, a low-lying wetland area.

Not Reported 52,118 Medium

WELLS STW

Haybridge, England

WELLS STW in Haybridge, Somerset, England, serves approximately 14,608 people as part of the UK's municipal wastewater infrastructure under the Urban Waste Water Treatment Regulations.

Not Reported 14,608 Low

WELLINGTON STW

Wellington, England

WELLINGTON STW serves approximately 14,717 people in Wellington, Somerset, England. The plant operates under the UK's wastewater regulatory framework, discharging treated effluent into local watercourses.

Not Reported 14,717 Low

WATCHET STW

Williton, England

WATCHET STW serves Williton, Somerset, England, treating wastewater for a population of 10,644. The plant operates under UK regulations and discharges into the local water environment.

Not Reported 10,644 Low

WARMINSTER STW

Warminster, England

WARMINSTER STW is a municipal wastewater treatment plant in Warminster, Wiltshire, England, serving approximately 24,926 people. It operates under the UK's regulatory framework for wastewater treatment.

Not Reported 24,926 Low

WAREHAM STW

Wareham, England

WAREHAM STW serves approximately 16,263 people in Wareham, Dorset, England. The plant discharges treated wastewater into the local water environment, contributing to the protection of the River Frome and Poole Harbour.

Not Reported 16,263 Medium

TROWBRIDGE STW

Trowbridge, England

TROWBRIDGE STW serves approximately 67,871 people in Trowbridge, Wiltshire, England. The plant discharges treated wastewater into the local water environment, contributing to the protection of the Bristol Avon catchment.

Not Reported 67,871 Low

THORNBURY STW

Old Passage, England

THORNBURY STW serves Old Passage, England, treating wastewater for approximately 13,343 people. The plant is located near the Severn Bridge and operates under UK wastewater regulations.

Not Reported 13,343 Low

THINGLEY STW

Gastard, England

THINGLEY STW serves Gastard, England, treating wastewater for approximately 17,556 people. The plant operates under the UK's regulatory framework for wastewater treatment.

Not Reported 17,556 Low

TETBURY STW

Cotswold, England

TETBURY STW is a municipal wastewater treatment plant serving Tetbury in Cotswold, England. It operates under UK regulations and discharges treated effluent into the local water environment.

Not Reported 5,779 Low

TAUNTON STW

Creech St. Michael, England

Taunton STW serves approximately 82,000 people in Creech St. Michael, Somerset, England. The plant operates under the UK's water quality regulations, discharging treated effluent into local watercourses.

Not Reported 81,887 Low

BLANDFORD FORUM STW

Spetisbury, England

BLANDFORD FORUM STW in Spetisbury, England serves approximately 17,640 people. The plant operates under the UK's wastewater regulatory framework, discharging treated effluent into the local water environment.

Not Reported 17,640 Low

SWANAGE STW

Swanage, England

SWANAGE STW serves approximately 22,000 people in Swanage, Dorset, England. The plant discharges treated wastewater into the English Channel, supporting coastal water quality.

Not Reported 22,017 Medium

SUTTON BENGER STW

Christian Malford, England

SUTTON BENGER STW is a wastewater treatment plant serving Christian Malford, Wiltshire, England. It treats wastewater for approximately 5,000 people under UK environmental regulations.

Not Reported 4,964 Low

STURMINSTER NEWTON STW

Sturminster Newton, England

STURMINSTER NEWTON STW serves approximately 5,527 people in Sturminster Newton, Dorset, England. The plant operates under UK wastewater regulations, treating municipal sewage before discharge into local watercourses.

Not Reported 5,527 Low

SOUTH PETHERTON STW

South Petherton, England

South Petherton STW serves the Somerset town of South Petherton, England, with a designed capacity of 1.00 and a population of 5,269. The plant operates under UK wastewater regulations.

Not Reported 5,269 Low

SOMERTON STW

Somerton, England

SOMERTON STW is a wastewater treatment plant serving Somerton, Somerset, England. It treats wastewater for approximately 6,837 people under the UK regulatory framework.

Not Reported 6,837 Low

SHERBORNE STW

Castleton, England

SHERBORNE STW serves Castleton, England, treating wastewater for approximately 10,616 people. The plant operates under the UK's regulatory framework for wastewater treatment.

Not Reported 10,616 Low

SHEPTON MALLET STW

Shepton Mallet, England

Shepton Mallet STW serves approximately 52,000 people in Somerset, England. The plant operates under UK wastewater regulations, discharging treated effluent into local watercourses.

Not Reported 52,004 Low

Frequently asked

How many wastewater treatment plants are in United Kingdom?

UtilityRadar indexes 1887 wastewater treatment plants in United Kingdom, with treatment level, capacity, operator and discharge data on each record.

Who operates wastewater treatment in United Kingdom?

Among the plants on this page, the most-referenced operator is Wessex Water. UtilityRadar's records show 1 plant linked to this operator.

What is the largest wastewater treatment plant in United Kingdom?

Among the indexed plants, BURNHAM ON SEA _ HIGHBRIDGE STW has the highest designed capacity at 1 m3/day.

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