The Authority may determine, in a case referred to it by—
a water supply licensee or a potential customer of a water supply licensee, or
a sewerage licensee or a potential customer of a sewerage licensee,
whether a proposed supply of water to, or proposed sewerage services for, the customer would be in accordance with what is authorised by the licensee's licence.
The matters which the Authority may determine include the following matters—
the extent of the premises to be supplied for the purposes of paragraph 4 or 7(a) or (b) of Schedule 2A;
the extent of the premises to be served for the purposes of paragraph 2 of Schedule 2B;
whether the premises to be supplied or served are household premises (as defined in section 17C above); and
whether the threshold requirement is satisfied in relation to the premises to be supplied (construed in accordance with section 17D above),
and also include any other matter the determination of which is relevant to those matters.