(A) In order that the rates and charges for sewage services may remain fair and equitable and be in proportion to the cost of providing services to the various users or user classes, the District shall cause a study to be made as deemed appropriate by the Board of Sanitary Commissioners. The study shall include, but not be limited to, an analysis of the costs associated with the treatment of excessive strength effluents from industrial users, volume and delivery flow-rate characteristics attributed to the various users or user classes, the financial position of the sewage works, and the adequacy of its revenue to provide reasonable funds for the operation, maintenance, replacements, debt service requirements and capital improvements to the waste treatment systems.
(B) Thereafter, on a biennial basis, within a reasonable period of time following the normal accounting period. The District shall cause a study to be made for the purpose of reviewing:
(1) The sufficiency of the revenue to properly operate the wastewater treatment facility and all appurtences attached thereto; and
(2) Maintaining proportionately among user classes of the rates and charges for sewage services. Said service shall be conducted by the officers or employees of the district or by a firm of certified public accountants, or a firm of consulting engineers which firms shall have experience in such studies, or by such combination of officers, employees, certified public accountants or engineers as the Director shall determine to be best under the circumstances.
(Prior Code, § 53.19)