7.—(1) Subject to paragraph (2), when calculating the cost of a connection to the public water supply system, including a connection that serves more than one dwelling, account shall be taken only of the costs reasonably and necessarily incurred in making the connection, including–
(a)the costs of the provision of such other infrastructure as Scottish Water considers reasonable and necessary in consequence of the connection; and
(b)such other costs as Scottish Water considers reasonable and necessary in consequence of the connection.
(2) No account shall be taken of–
(a)any part of a connection that relates to the matters referred to in regulation 3(2); and
(b)any charge which is payable under a charges scheme in respect of the making of a connection to the public water supply system.