The Division of Water of the Department of Public Utilities, at its regular monthly
collection periods, shall at the then current rate per one thousand (1,000) cubic
feet charged general consumers for water, render to the city council, bills for the
amount of water used by hospitals and institutions granted the use of water free of
charge under conditions and terms named herein, which bills shall be promptly paid
to the Division of Water out of the general revenue fund of the city upon provision
being made therefore by the council.