It shall be the duty of a sewerage undertaker (in accordance with section 101 below) to provide a public sewer to be used for the drainage for domestic purposes of premises in a particular locality in its area if-
and
It shall be the duty of a sewerage undertaker (in accordance with section 101 below) to provide a lateral drain to communicate with a public sewer and to be used for the drainage for domestic purposes of premises in its area if—
Each of the following persons shall be entitled to require the provision of a public sewer for any locality, that is to say—
and
Each of the following persons shall be entitled to require the provision of a lateral drain, that is to say—
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The duty of a sewerage undertaker under this section to provide a public sewer or, as the case may be, a lateral drain shall be owed to the person who requires the provision of the sewer or lateral drain or , as the case may be, to each of the persons who joins in doing so.
Where a duty is owed by virtue of subsection (3) above to any person, any breach of that duty which causes that person to sustain loss or damage shall be actionable at the suit of that person; but, in any proceedings brought against a sewerage undertaker in pursuance of this subsection, it shall be a defence for the undertaker to show that it took all reasonable steps and exercised all due diligence to avoid the breach.
In this section the reference to domestic purposes, in relation to the drainage of premises . . . to which a requirement under this section relates, is a reference—