(1) Unless otherwise authorized by the Commission, each utility shall provide and install at its own expense and shall continue to own, maintain, and operate all equipment necessary for the regulation and measurement of water, in accordance with tariff or contract provisions, to its consumers. Where additional meters are requested by the consumer and are furnished by the utility for the convenience of the consumer, a charge for such meters may be made to the consumer.

(2) The utility will not make collections for any secondary meters, and all water rents of any single meter must be paid by one consumer when supplied by meter measurement from one service. The utility, however, may enclose the readings of secondary meters with the bill for the single meter service.

(3) In no case will the utility furnish water from one meter to two or more connections, except where master metering is being used.

(4) The utility may install or replace any meter at such time as it may see fit and shall determine the size of any meter installed.