Kan. Stat. § 12-2707
If the governing body of a municipality determines it advisable and necessary to provide a water supply system or to improve the municipality's water supply system by contracting with other municipalities and corporations as provided in this act the governing body shall so declare by resolution. The participating municipalities and corporations forthwith shall have prepared plans and specifications and a detailed estimate of the cost of such improvements and shall file a copy of the plans, specifications and estimate with the clerk of each participating municipality and with the secretary of each participating corporation, if any. Such plans, specifications and estimate shall be presented to the secretary of health and environment for approval. If approved by the secretary, the plans, specifications and estimate shall be returned to the clerk of each participating municipality, showing such approval. No bonds to pay the cost for any improvement provided for in this act shall be issued by the governing body of any municipality until the plans, specifications and estimate have been approved by the secretary of health and environment. The total cost of any improvement provided for in this act shall in no case exceed the total cost of the approved estimate.
K.S.A. 12-2707