The rates and charges fixed and prescribed by this chapter shall be due and payable in the utility billing office of the city on or before the tenth day after the date of billing the same. In the event that such rates and charges are not paid in full by such due date, a penalty of 10% of the amount due and payable shall be added to such rates and charges.
(`87 Code, § 24-23) (Ord. passed 12-20-55)