Severn Trent plc is a water company based in

Coventry Coventry ( or rarely ) is a City status in the United Kingdom, cathedral city and metropolitan borough in the West Midlands (county), West Midlands county, in England, on the River Sherbourne. Coventry had been a large settlement for centurie ...

, England. It supplies 4.6 million households and business across the

Midlands The Midlands is the central region of England, to the south of Northern England, to the north of southern England, to the east of Wales, and to the west of the North Sea. The Midlands comprises the ceremonial counties of Derbyshire, Herefor ...

and Wales. It is traded on the

London Stock Exchange The London Stock Exchange (LSE) is a stock exchange based in London, England. the total market value of all companies trading on the LSE stood at US$3.42 trillion. Its current premises are situated in Paternoster Square close to St Paul's Cath ...

and a constituent of the

FTSE 100 Index The Financial Times Stock Exchange 100 Index, also called the FTSE 100 Index, FTSE 100, FTSE, or, informally, the "Footsie" , is the United Kingdom's best-known stock market index of the 100 most highly capitalised blue chips listed on ...

. Severn Trent, the trading name owned by the company, applies to a group of companies operating across the United Kingdom, United States and mainland

Europe Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...

, with some involvement in the

Middle East The Middle East (term originally coined in English language) is a geopolitical region encompassing the Arabian Peninsula, the Levant, Turkey, Egypt, Iran, and Iraq. The term came into widespread usage by the United Kingdom and western Eur ...

. It took its name from the two predecessor River Authorities, which managed the catchment of the Severn and the Trent.

History

The Severn Trent Water Authority was established in 1974. In July 1989, the Severn Trent Water Authority was partially privatised under the Water Act 1989, together with the rest of the water supply and sewage disposal industry in England and Wales, to form Severn Trent Water, with a responsibility to supply freshwater and treat

sewage Sewage (or domestic sewage, domestic wastewater, municipal wastewater) is a type of wastewater that is produced by a community of people. It is typically transported through a sewerage, sewer system. Sewage consists of wastewater discharged fro ...

for around 8 million people living in the

of England and also a small area of Wales. In May 1991, it went on to acquire Biffa, a waste management business. In October 2006, Biffa was demerged from the group Severn Trent, and was subsequently listed separately on the

. In January 2007, the American side of Severn Trent Laboratories was sold to

HIG Capital H.I.G. Capital, LLC is a global alternative investment firm with $69 billion of capital under management. Headquartered in Miami, Florida, H.I.G. specializes in providing both debt capital, debt and equity capital to middle-market company, middle ...

. In 1993 the company acquired East Worcester Water plc, a former statutory water company whose area was surrounded by Severn Trent's existing water supply area, and the operations were merged. In September 2007, the company announced they would be closing its headquarters in

Birmingham Birmingham ( ) is a City status in the United Kingdom, city and metropolitan borough in the metropolitan county of West Midlands (county), West Midlands, within the wider West Midlands (region), West Midlands region, in England. It is the Lis ...

and relocating to a custom built office complex in the centre of

in the autumn of 2010. In June 2016, Severn Trent Water and United Utilities formed Water Plus in preparation for the water market deregulation, to provide the retail services for their non household customers, after being granted approval by the

Competition and Markets Authority The Competition and Markets Authority (CMA) is the principal competition regulator in the United Kingdom. It is a non-ministerial government department in the United Kingdom, responsible for promoting competitive markets and tackling unfair beh ...

. In 2017 Severn Trent plc acquired Dee Valley Water, a water-only company with an area adjoining Severn Trent Water's own. In 2018 the areas of the two operating companies were adjusted so that Hafren Dyfrdwy (the new name for the Dee Valley company) took on all Severn Trent Water's water supply and wastewater operations in Wales, and the small area of the former Dee Valley operation within England (an exclave at

Chester Chester is a cathedral city in Cheshire, England, on the River Dee, Wales, River Dee, close to the England–Wales border. With a built-up area population of 92,760 in 2021, it is the most populous settlement in the borough of Cheshire West an ...

) became part of Severn Trent Water.

Operations

The main companies in the group are Severn Trent Water, Hafren Dyfrdwy and Severn Trent Services. Severn Trent Laboratories was rebranded as part of Severn Trent Services in 2010, to streamline the company and give it a single worldwide image, rather than a series of separate organisations with different identities. As with all water companies in the United Kingdom, Severn Trent is regulated under the Water Industry Act 1991. , the company supplies about 4.6 million households and businesses in its area, rising from 3.7 million in 2008. Severn Trent Water has a call centre in Coventry, dealing with operational emergencies and billing enquiries, and two other call centres in Derby and Shrewsbury, which deal solely with billing enquiries. Its head office is the new custom built Severn Trent Centre in Coventry.

Regulation and criticism

In July 2007, the Mythe Water Treatment Works near Tewkesbury became inundated with water from the

River Severn The River Severn (, ), at long, is the longest river in Great Britain. It is also the river with the most voluminous flow of water by far in all of England and Wales, with an average flow rate of at Apperley, Gloucestershire. It rises in t ...

during the Summer 2007 United Kingdom floods. The water coming into the plant was contaminated, and this led to the loss of all running water for approximately 150,000 people in

Cheltenham Cheltenham () is a historic spa town and borough adjacent to the Cotswolds in Gloucestershire, England. Cheltenham became known as a health and holiday spa town resort following the discovery of mineral springs in 1716, and claims to be the mo ...

Gloucester Gloucester ( ) is a cathedral city, non-metropolitan district and the county town of Gloucestershire in the South West England, South West of England. Gloucester lies on the River Severn, between the Cotswolds to the east and the Forest of Dean ...

and

Tewkesbury Tewkesbury ( ) is a market town and civil parish in the north of Gloucestershire, England. The town grew following the construction of Tewkesbury Abbey in the twelfth century and played a significant role in the Wars of the Roses. It stands at ...

. In July 2008, OFWAT confirmed that it had fined Severn Trent Water £35.8 million for deliberately providing false information to Ofwat and for delivering poor service to its customers. In July 2008, the company was fined £2m (reduced from a previous judgement of £4m) for poor information reporting and covering up misleading leakage data. Despite improvements, according to Ofwat, the percentage of leakages from 2010 to 2011 was the highest in England and Wales, at 27%, representing 0.5 billion litres (500,000

tonnes The tonne ( or ; symbol: t) is a unit of mass equal to 1,000 kilograms. It is a non-SI unit accepted for use with SI. It is also referred to as a metric ton in the United States to distinguish it from the non-metric units of the s ...

) per day. On 11 March 2016, Severn Trent customers in Derbyshire were issued a "do not use" notice due to high levels of

chlorine Chlorine is a chemical element; it has Symbol (chemistry), symbol Cl and atomic number 17. The second-lightest of the halogens, it appears between fluorine and bromine in the periodic table and its properties are mostly intermediate between ...

detected in the water supply, leaving thousands of households without a clean, reliable water supply. On 20 February 2024, Severn Trent Water was fined over £2 million for discharging more than 260 million litres of raw sewage into the

River Trent The Trent is the third Longest rivers of the United Kingdom, longest river in the United Kingdom. Its Source (river or stream), source is in Staffordshire, on the southern edge of Biddulph Moor. It flows through and drains the North Midlands ...

from its Strongford Treatment Works, an incident that occurred between November 2019 and February 2020 but avoided catastrophic pollution due to high river flows from storms. In December 2024, Severn Trent Water was accused by the

BBC The British Broadcasting Corporation (BBC) is a British public service broadcaster headquartered at Broadcasting House in London, England. Originally established in 1922 as the British Broadcasting Company, it evolved into its current sta ...

's ''

Panorama A panorama (formed from Greek language, Greek πᾶν "all" + ὅραμα "view") is any Obtuse angle, wide-angle view or representation of a physical space, whether in painting, drawing, photography (panoramic photography), film, seismic image ...

'' of an accounting trick artificially inflating its balance sheet by more than a billion pounds. An investment ('Severn Trent Trimpley') that the company claims is worth £1.68bn in its accounts, was said to have no value to the overall business in reality, but made the company appear more financially robust, supporting payments to shareholders. Severn Trent denied the accusation, saying ''Panoramas allegations were "completely inaccurate". In March 2024, Severn Trent Water faced backlash for dismissing a sewage worker after they posted on the company intranet condemning Hamas as “a group of violent and disgusting terrorists” on the anniversary of the October 7 attack. The disciplinary action followed internal complaints that their language was derogatory and reflected poorly on the company’s commitment to diversity and inclusion.

Reservoirs

Ladybower Reservoir viaducts - April 2021

The company operates a number of

reservoirs A reservoir (; ) is an enlarged lake behind a dam, usually built to store fresh water, often doubling for hydroelectric power generation. Reservoirs are created by controlling a watercourse that drains an existing body of water, interrup ...

, many of which are accessible for recreational use. These include: * Carsington Reservoir – River Derwent compensation flow pumped storage facility * Upper Derwent Valley ( Derwent,

Howden Howden () is a market town and civil parishes in England, civil parish in the East Riding of Yorkshire, England. It lies in the Vale of York to the north of the M62 motorway, M62, on the A614 road about south-east of York and north of Goole, ...

and Ladybower Reservoirs) – Built by the Derwent Valley Water Board to supply the cities of

Sheffield Sheffield is a city in South Yorkshire, England, situated south of Leeds and east of Manchester. The city is the administrative centre of the City of Sheffield. It is historically part of the West Riding of Yorkshire and some of its so ...

Derby Derby ( ) is a City status in the United Kingdom, city and Unitary authorities of England, unitary authority area on the River Derwent, Derbyshire, River Derwent in Derbyshire, England. Derbyshire is named after Derby, which was its original co ...

Nottingham Nottingham ( , East Midlands English, locally ) is a City status in the United Kingdom, city and Unitary authorities of England, unitary authority area in Nottinghamshire, East Midlands, England. It is located south-east of Sheffield and nor ...

and

Leicester Leicester ( ) is a city status in the United Kingdom, city, Unitary authorities of England, unitary authority area, and the county town of Leicestershire in the East Midlands of England. It is the largest city in the East Midlands with a popula ...

* Bartley Reservoir *

Draycote Water Draycote Water is a reservoir and country park near the village of Dunchurch, south of Rugby in Warwickshire, England, owned and operated by Severn Trent Water. It draws its water from the River Leam, and supplies drinking water to Rugby ...

* Foremark Reservoir * Shustoke Reservoir * Tittesworth reservoir * Ogston Reservoir * Linacre Reservoirs (non operational since 1995) *

Barby Storage Reservoir Barby Storage Reservoir is an underground reservoir (water), reservoir near Barby, Northamptonshire, Barby in Northamptonshire, England, owned and operated by Severn Trent Water. It supplies drinking water to Rugby, Warwickshire, Rugby, being fed ...

*Severn Trent Water also runs the filtration works at the Elan Valley Reservoirs

References

External links