The City shall charge every licensee under this chapter a periodic fee for the maintenance and upkeep of the City’s water facilities designated or expected to directly service the licensee’s property. The fee shall be based upon the proportion of the facilities designated or expected to directly service the licensee’s property in relation to the whole of the City’s facilities. One half of the basic charge for service under the provisions of this chapter related to delivery of water shall be the fee charged per month to any licensee unless the City council shall by resolution establish a lower fee.