§ 15-426  BILLS.
   (a)   Bills shall be rendered monthly as provided in § 15-222 and shall be collected as a combined utility bill.
   (b)   Any person at the time of beginning or terminating service who receives service for a period of less than 17 consecutive days shall be billed at no less than one-half of the regular minimum monthly rate. For service of 17 consecutive days or more the charge shall be not less than full regular minimum monthly rate.