The Water Authorities (Successor Companies) Order 1989
The Water Act 1989 provides for the appointment of successor companies wholly owned by the Crown to take over the functions of the water authorities established in England and Wales by the Water Act 1973 (c. 37) so far as they relate to the supply of water and the provision of sewerage services. The 1989 Act further provides that their regulatory functions shall vest in a new National Rivers Authority created by the Act.