The Thames Water Authority was one of ten regional water authorities created in the UK on 1 April 1974 under the provisions of the

Water Act 1973 The Water Act 1973 (1973 c.37) is an Act of the Parliament of the United Kingdom that reorganised the water, sewage and river management industry in England and Wales. Water supply and sewage disposal were removed from local authority control, ...

to bring together all the water management functions of the region in one public body.

Predecessors

The bodies subsumed by the Thames Water Authority included the

Metropolitan Water Board The Metropolitan Water Board was a municipal body formed in 1903 to manage the water supply in London, UK. The members of the board were nominated by the local authorities within its area of supply. In 1904 it took over the water supply functi ...

, the

Thames Conservancy The Thames Conservancy (formally the Conservators of the River Thames) was a body responsible for the management of the that river in England. It was founded in 1857 to replace the jurisdiction of the City of London up to Staines. Nine years la ...

, the

Lee Conservancy Catchment Board The Lee Navigation is a canalised river incorporating the River Lea (also called the River Lee along the sections that are navigable). It flows from Hertford Castle Weir to the River Thames at Bow Creek; its first lock is Hertford Lock and i ...

and parts of the Essex and Kent River authorities. It also took over water and sewage responsibility from the following water suppliers in the Thames catchment: * Colne Valley Water Company *

Cotswold The Cotswolds (, ) is a region in central-southwest England, along a range of rolling hills that rise from the meadows of the upper Thames to an escarpment above the Severn Valley and Evesham Vale. The area is defined by the bedrock of Juras ...

Water Board *

Croydon Croydon is a large town in south London, England, south of Charing Cross. Part of the London Borough of Croydon, a local government district of Greater London. It is one of the largest commercial districts in Greater London, with an extensi ...

Corporation * East Surrey Water Company *

Epsom and Ewell Epsom and Ewell () is a local government district with borough status and unparished area in Surrey, England, covering the towns of Epsom and Ewell. The borough was formed as an urban district in 1894, and was known as Epsom until 1934. It was ...

Corporation * Lee Valley Water Company * Mid Southern Water Company * Middle

Thames The River Thames ( ), known alternatively in parts as the River Isis, is a river that flows through southern England including London. At , it is the longest river entirely in England and the second-longest in the United Kingdom, after the R ...

Water Board *

Oxfordshire Oxfordshire is a ceremonial and non-metropolitan county in the north west of South East England. It is a mainly rural county, with its largest settlement being the city of Oxford. The county is a centre of research and development, primarily ...

and District Water Board * Rickmansworth and Uxbridge Valley Water Company * South West Suburban Water Company * Sutton District Water Company *

Swindon Swindon () is a town and unitary authority with Borough status in the United Kingdom, borough status in Wiltshire, England. As of the 2021 Census, the population of Swindon was 201,669, making it the largest town in the county. The Swindon un ...

Corporation *

Thames Valley The Thames Valley is an informally-defined sub-region of South East England, centred on the River Thames west of London, with Oxford as a major centre. Its boundaries vary with context. The area is a major tourist destination and economic hub, ...

Water Board *

Watford Watford () is a town and borough in Hertfordshire, England, 15 miles northwest of Central London, on the River Colne. Initially a small market town, the Grand Junction Canal encouraged the construction of paper-making mills, print works, a ...

Corporation * West Surrey Water Board * Woking and District Water Company

Dissolution

In 1989 the Thames Water Authority was partly privatised, under the provisions of the

Water Act 1989 The Water Act 1989 (1989 c.15) is an Act of the Parliament of the United Kingdom that reorganised the bodies responsible for all aspects of water within England and Wales. Whereas previous legislation, particularly the Water Act 1973, had focuse ...

with the water and sewage responsibilities transferring to the newly established publicly quoted company of

Thames Water Thames Water Utilities Ltd, known as Thames Water, is a large private utility company responsible for the public water supply and waste water treatment in most of Greater London, Luton, the Thames Valley, Surrey, Gloucestershire, north Wiltshir ...

, and the regulatory responsibilities transferring to the newly created

National Rivers Authority The National Rivers Authority (NRA) was one of the forerunners of the Environment Agency of England and Wales, existing between 1989 and 1996. Before 1989 the regulation of the aquatic environment had largely been carried out by the ten region ...

References

Water supply and sanitation in England Defunct companies based in London Defunct public bodies of the United Kingdom History of the River Thames Former water company predecessors of Thames Water Water management authorities in the United Kingdom Public utilities established in 1974 1974 establishments in England {{london-stub