The governing body shall review, at least annually, the user charge system and revise the charges, if necessary, to accomplish the following:
(A) Maintain the proportional distribution of operation, maintenance and replacement (OM&R) costs among users and user classes;
(B) Generate adequate revenues to pay the costs of OM&R; and
(C) Apply excess revenues collected from a class of users to the costs of OM&R attributable to that class for the next year and adjust the rates accordingly.
(Prior Code, § 3-216)