Anglian Water is a privatised water company that operates in the East of England.
Named for East Anglia, apart from Norfolk, Suffolk and Cambridgeshire it also covers Lincolnshire, Essex, Bedfordshire, Buckinghamshire, Northamptonshire, a small part of north Nottinghamshire and Greater London around Upminster.
Anglian's catchment areas are essentially between the Humber and the River Thames, including the River Great Ouse.
It is regulated under the Water Industry Act 1991.
The Anglian Water Authority was formed by the Water Act 1973 as one of ten regional water authorities which took over statutory and local authority owned water supply and waste water (sewage) undertakings.
Anglian Water was privatised as Anglian Water Services Limited in 1989. It is now a subsidiary of AWG plc.