Kan. Stat. § 13-1055a
Whenever the governing body of any city of the first class shall determine that it is necessary to build and construct one or more main sanitary interceptor sewers or one or more main storm water sewers or drains for the purpose of carrying off storm water from the streets, avenues and alleys of such city, it may by ordinance order and provide for such main sewers or drains to be constructed within the corporate limits of such city or outside of but within five (5) miles of such corporate limits and in such ordinance shall designate where such main sewers or drains shall commence and outline the same to the point or points of outlet or escape. The governing body of such city shall be the sole judge of whether any sanitary sewer is a main sanitary interceptor sewer or any storm water sewer or drain is a main storm water sewer or drain for the purposes of this act. The building and construction of main sewers or drains shall be at the expense of the city at large and shall be upon plans and specifications of the city engineer or engineers employed by the city, and may be built by the city or let to the lowest responsible bidder, as the governing body shall deem best.
K.S.A. 13-1055a