39E.—(1) For the purposes of any valuation list the Department may, by order—
(a)determine what property occupied for the purposes of water supply or sewerage services is to be treated as a single hereditament for the purposes of this Order;
(b)determine the net annual value of the hereditament or make provision for the manner in which the net annual value is to be, or may be, determined;
(c)make provision with respect to the apportionment of the aggregate amount of the net annual value determined under the order among the districts.
(2) An order under paragraph (1)—
(a)may modify or repeal any provision of this Order;
(b)may contain such incidental, supplementary or consequential provisions as the Department considers necessary or expedient for the purposes of the order;
(c)shall be made only after consultations with such associations of district councils and district councils as the Department considers appropriate; and
(d)shall be subject to affirmative resolution;
and an order providing for determining the net annual value of any hereditament may provide for determining that value by the application of different methods of valuation to different parts of the hereditament.]