K.S.A. 10-1203

No municipality, as herein defined, shall issue revenue bonds to acquire, construct, reconstruct, alter, repair, improve, extend or enlarge any plant or facilities for the furnishing of any utility service where same is being furnished by a private utility, except upon approval by the corporation commission of the state of Kansas, after a finding based on substantial evidence that the acquisition, construction, reconstruction, alteration, repair, improvement, extension or enlargement of such plant or facilities is necessary or appropriate for the municipality and its consumers, and for the protection of investors and will not result in the duplication of existing utility services in the area served or to be served by the municipality.