(a)      (1)      For every service connection under § 3-104 of this article, the WSSC shall set a charge that the WSSC determines to be reasonable.

            (2)      The charge shall be uniform throughout the sanitary district for connections of those sizes and classes for which the average cost reasonably may be ascertainable and for the actual cost for all other connections, subject to a revision of the charges annually by the WSSC.

            (3)      All property owners shall pay the charge at the office of the WSSC before the actual connection with any pipe or private property is made.

      (b)      Of all of the revenue over actual cost that is derived from the charges, the WSSC shall:

            (1)      Retain one-half of the revenue in a contingency fund for repair, replacement, or any extraordinary expense in the maintenance and operation of the water supply or sewerage systems under the control of the WSSC; and

            (2)      Apply one-half of the revenue to pay the bonded debt of the WSSC.