Where any property has paid or shall pay its full proportion for sewers in one sewer district, it shall not be transferred to another district and thereby be made liable for taxation for sewers in such other district, except that such land may be included in a joint sewage district for the building of sewers which may serve all the land embraced within said joint sewage district; such joint sewage district, composed of two or more sewage districts, may be organized and governed in the same manner as is herein provided for the organization and government of sewage districts: And provided further, That the governing body thereof may, in its discretion, provide for the payment of the costs thereof by installments instead of levying the entire tax and the special assessment for such cost at one time and may issue and sell improvement bonds in like manner.
K.S.A. 80-2015