The governing body of each municipality issuing bonds under § 28-18-7 shall have the authority, and it shall be its duty, to establish and collect reasonable rentals or charges for the use and occupancy of and for the services furnished at such facilities. Such rentals and charges shall be fixed according to schedules, and shall be revised when necessary, so as to produce gross revenues at all times sufficient for current operation and maintenance of the hospital, nursing facility, or other facility and sufficient for prompt payment of all outstanding revenue bonds and interest and creation and maintenance of agreed reserves.
SDCL 28-18-17