North West Water was a water supply company serving north west England. It was originally the North West Water Authority, one of ten regional authorities created by the Water Act 1973

Water Act 1973

The Water Act 1973 is an Act of the Parliament of the United Kingdom that reorganised the water, sewage and river management industry in England and Wales...

. In 1989 it became North West Water plc

Public limited company

A public limited company is a limited liability company that sells shares to the public in United Kingdom company law, in the Republic of Ireland and Commonwealth jurisdictions....

, and was privatised. In 1995 it merged with Norweb

NORWEB

Norweb PLC, originally the North West Electricity Board, was a British electricity supply and distribution company. It supplied electricity to about 4.7 million industrial, commercial and domestic customers in the North West of England. The Board was originally formed in 1948 as part of the...

 (the former North Western Electricity Board) to form United Utilities

United Utilities

United Utilities Group PLC is the UK's largest listed water business. The Group owns and manages the regulated water and waste water network in the north west England, through it subsidiary United Utilities Water PLC , which is responsible for the vast majority of the group's assets and...

.

The North West Water Authority took over the following statutory water undertakings:

• Bolton Corporation
• Carlisle Corporation
• Liverpool Corporation
• Manchester Corporation
• St.