Kan. Stat. § 13-431
To prescribe and fix maximum rates and charges, and regulate the collection of the same, for all water, electric light, heat, power, gas, telephone service or any other commodity or service furnished to such city or to any of the inhabitants thereof by any person or corporation now authorized by such city by virtue of a franchise ordinance or laws of this state, or that may hereafter be authorized by virtue of a franchise ordinance or laws of this state to furnish water, electric light, heat, power, gas or telephone service, or any other commodity or service, to such city or to its inhabitants.
The rates and charges so prescribed shall at all times be reasonable and just; and if any city shall fix unreasonable and unjust rates and charges, the same may, at the instance of any producer or consumer, be reviewed and determined by the district court of the county in which such city is situated.
K.S.A. 13-431