(a) When water is used for temporary purposes or for purposes not otherwise specified in this article, the quantity of water so used, or to be used, shall be estimated by the superintendent of water and shall be charged for at the rate set forth in § 36-23 of this chapter.
(b) The amount to be charged for the use of water for such temporary or other purposes, when the quantity of water used or to be used shall have been estimated by the superintendent of water, shall be paid in advance to the water department by the person desiring to use such water, at the rates herein fixed for such use.