After the schedule of rates for sewerage, water and natural gas service have been fixed by ordinance, it shall not thereafter be revised, except by ordinance duly adopted by the City Council after submission by the Sewerage and Water Works Commission of a detailed schedule of rates, in writing, together with the recommendation of a competent engineer or engineering firm specializing in and recognized as an expert in utility rate matters, showing that the revision is proper and that the rates so revised will provide income sufficient for the purpose of the bond authorization ordinances presently in existence.
(Ord. 292, passed 1-21-1937; Ord. 18-92, passed 6-16-1992; Am. Ord. 18-2011, passed 10-18-2011)