Kan. Stat. § 13-1018f
The governing body of any city of the first class having a population of 95,000 or more in this state shall have the power to provide for one or more systems of disposal works, or additions to systems already built, for the purification of the sewage of the city or any part thereof or draining into the sewage system of the city, and to build, operate and maintain such disposal works as the governing body may designate.
The cost and expense of building the same shall be borne by the city as a whole, and may be paid out of the general revenue fund; or if the governing body so determine, improvement bonds of the city may be issued therefor and the proceeds from the sale of such bonds to be used in paying for the same, including engineering expense prior to construction, for which bonds may be issued if the governing body so determine, as hereinafter provided. Sewage-disposal works as used herein includes sewage-disposal plant, necessary sewers and drains from existing outlets to the plant and from the plant to a creek, ravine or river where sewage may be drained, necessary pumping plants, force mains, and all appurtenances necessary to construct a complete disposal works for the disposal of sewage.
K.S.A. 13-1018f