Method of charging
7.—(1)  Where the premises of a consumer in the same localities are supplied with water which are metered separately and the price of water supplied is chargeable in accordance with a particular tariff set out in the Schedule, the Board may, in its discretion, charge the consumer for the water supplied as if it is not metered separately.
(2)  The amount of water charged to a consumer shall include water wasted by leakage or otherwise.