In all counties with population of not less than one hundred seventy-five thousand (175,000) and not more than two hundred fifteen thousand (215,000) no city shall make any fee or charge howsoever designated, for any service provided by said city to residents thereof, unless the person or property charged for or paying such fee shall be a user of or required by law to use such service, and, in no event shall such fee or charge be unreasonable or disproportionate to the service provided.
K.S.A. 12-1674a