Kan. Stat. § 24-111
Any municipal corporation of any other state, whether organized under a special charter or not, whose limits border upon or are near to any of the boundaries of this state is hereby permitted to contract with drainage districts and other public corporations of this state for co-operation or joint action in building and maintaining dikes, levees, sanitary and storm sewers and in diverting or improving watercourses in watersheds extending into the territorial limits of all the districts or corporations so contracting, and said municipality of such other state may agree with such drainage district or other public corporation of this state as to the division between them of the cost of building and maintaining such sewers, dikes and levees and of diverting or improving such watercourses.
K.S.A. 24-111