52The domestic supply duty
(1)The domestic supply duty of a water undertaker in relation to any premises is a duty, until there is an interruption of that duty—
(a)to provide to those premises such a supply of water as (so far as those premises are concerned) is sufficient for domestic purposes; and
(b)to maintain the connection between the undertaker’s water main and the service pipe by which that supply is provided to those premises.
(2)Subject to the following provisions of this section and to section 53 below, a water undertaker shall owe a domestic supply duty in relation to any premises to which this section applies and which are situated in the area of the undertaker if—
(a)a demand for a supply of water for domestic purposes has been made, in accordance with subsection (5) below, to the undertaker in respect of those premises; or
(b)those premises are premises to which this section applies by reason of a supply of water provided before 1st September 1989,
and there has been no interruption of the domestic supply duty in relation to those premises since that demand was made or, as the case may be, since the beginning of 1st September 1989.
(3)This section applies to any premises if—
(a)they consist in the whole or any part of a building and are connected by means of a service pipe to a water main; and
(b)the requirements of subsection (4) below are satisfied in relation to those premises.
(4)The requirements of this subsection are satisfied in relation to any premises if—
(a)the pipe by means of which the premises are connected to the water main in question was first connected with that main in pursuance of a connection notice served in respect of those premises;
(b)that pipe was the means by which a supply of water from that main was being supplied to those premises for domestic purposes immediately before 1st September 1989;
(c)the condition specified in paragraph (b) above would be satisfied in relation to the premises if any service pipe to those premises had not been temporarily disconnected for the purposes of any necessary works which were being carried out immediately before 1st September 1989; or
(d)the condition specified in any of the preceding paragraphs—
(i)has been satisfied in relation to the premises at any time on or after 1st September 1989; and
(ii)would continue to be satisfied in relation to the premises had not the whole or any part of a service pipe to those premises, or the main with which such a pipe had been connected, been renewed (on one or more previous occasions).
(5)For the purposes of this section a demand in respect of any premises is made in accordance with this subsection if it is made—
(a)by the person who is the occupier of the premises at the time when the demand is made; or
(b)by a person who is the owner of the premises at that time and agrees with the undertaker to pay all the undertaker’s charges in respect of the supply demanded.
(6)For the purposes of this section—
(a)there is an interruption of the domestic supply duty owed by a water undertaker in relation to any premises if that supply is cut off by anything done by the undertaker in exercise of any of its disconnection powers, other than a disconnection or cutting off for the purposes of the carrying out of any necessary works; and
(b)a domestic supply duty owed in relation to any premises shall not be treated as interrupted by reason only of a change of the occupier or owner of the premises.
(7)Nothing in this section shall impose any duty on a water undertaker—
(a)to provide a supply of water directly from, or maintain any connection with, a water main which is a trunk main or is or is to be used solely for the purpose of supplying water otherwise than for domestic purposes; or
(b)to provide a supply of water to any premises, or maintain the connection between a water main and a service pipe to any premises, during any period during which it is reasonable—
(i)for the supply of water to those premises to be cut off or reduced; or
(ii)for the pipe to be disconnected,
for the purposes of the carrying out of any necessary works.
(8)In this section references to the disconnection powers of a water undertaker are references to the powers conferred on the undertaker by any of sections 60 to 62 and 75 below.