Kan. Stat. § 12-631a
Whenever, in the opinion of the governing body of any city in the state of Kansas it shall become necessary to alter, repair or reconstruct any existing sewer which serves two or more sewer districts, where sewer districts may have * created, or which serves a substantial portion of the city, the governing body of such city may provide for the alteration, repair or reconstruction of any such sewer; or if any such sewer, after having been constructed for twenty years or more, is found to be inadequate, and in the opinion of the governing body of** the inadequacy of such sewer can be corrected at a lesser cost by the construction of another sewer in the same watershed, the governing body of such city may provide for the construction of a supplemental sewer.
In order to pay for the construction of sewers herein provided for, the governing body of such city may assess the cost thereof against the sewer district or sewer districts served by such sewer, in cases where sewer districts have been created, or may, if in the opinion of the governing body the cost of such alteration, repair, construction or reconstruction should be borne by the city at large, pay the cost thereof out of the general fund of said city, and if the general fund is insufficient to pay such cost, or if the governing body deems it necessary, such governing body may issue general improvement bonds in the manner provided by law to pay such cost.
All contracts for any such work, and special assessments against any property to pay the same in case such work is to be paid for by special assessments, shall be governed as near as may be by the provisions of law relating to the construction and payment of street improvements. If in the opinion of the governing body the cost of such alteration, repair, construction or reconstruction should be borne by the city at large the governing body may find that such sewer is an interceptor sewer and such finding shall be final and conclusive and shall make such sewer a utility within the meaning of the word "utility" as defined in K.S.A. 10-1201.
K.S.A. 12-631a