There is established a general facilities charge to be paid for all connections made to the city’s water system. For single-family residential or two-family structures, the general facilities charge shall be paid prior to connection to the city’s water system. For all other structures, the general facilities charge shall be paid prior to final public works approval and prior to issuance of the certificate of occupancy. In no case shall any structure be occupied prior to payment of the general facilities charge. The rate during calendar year 2022 shall be in accordance with the schedule set forth below for each service connection. The rate of said charge shall be increased on January 1st of each calendar year subsequent to 2022 by an amount equal to the increase in the Engineering News-Record Construction Cost Index, twenty-city average, August over August. The payment of such connection charges shall be in accordance with Chapter 13.02 LMC. Such schedule shall be as follows: