Kan. Stat. § 19-2752b
Subject to the provisions of K.S.A. 19-270, the governing body of a main sewer district created and established under the provisions of K.S.A. 19-2731 to 19-2752, inclusive, and amendments thereto, by resolution, may enlarge the boundaries of the district upon the presentation of a petition, approved by the sewer district engineer, and signed by the owners, or others having expressly reserved the right to do so, of 51% of the area sought to be added to such district. Such resolution shall provide for the levying of taxes and assessments upon the land in such added area, the same as are being levied upon the lands in the main sewer district, to pay the principal and interest upon outstanding bonds issued for the purpose of paying the cost of improvements of such main sewer district, and shall also provide for an additional levy upon the lands in such added area to pay a proportionate share of all amounts previously paid by the main sewer district upon any bonds issued for such purpose. No such land may be added to the main sewer district except where the sewage therefrom may flow by gravity into the mains in the main sewer district. Such additional levy shall be made over a period of from one to five years, as determined by the governing body, and the proceeds therefrom shall be credited to the bond and interest fund of the main sewer district.
K.S.A. 19-2752b