(1) This subsection shall apply to water and sewer rent charges which accrue prior to January 1, 1960.

(a) When any minimum water or sewer rent bill remains unpaid for 30 days after the bill is rendered, there shall be charged as a penalty a sum equal to 1% of the bill for each month during the calendar year in which the bill remains unpaid, and after the expiration of the calendar year in which the bill is rendered it shall bear interest at the rate of ½ of 1% per month until paid.

(b) When any excess water or sewer rent bill remains unpaid for 30 days after the bill is rendered, there shall be charged as a penalty a sum equal to 5% of the bill, and after the expiration of the calendar year in which the bill is rendered, it shall bear interest at the rate of ½ of 1% per month until paid.

(c) If any water or sewer rent remains unpaid for one year after the bill has been rendered, the Department shall serve a notice upon the delinquent property owner and if the rent, with penalty and interest thereon, is not paid within 10 days after such service, the Department may, in its discretion, deprive the premises of water until the amount of the bill with penalty and interest is paid.

(2) This subsection shall apply to water and sewer rent charges which accrue on and after January 1, 1960.

(a) If current water or sewer rent charges are not paid within thirty (30) days after the due date of any bill, a penalty of 5% shall be imposed.

(b) Additional penalties shall be imposed and added to unpaid water or sewer rent charges, and their penalties, on the due date of the bill of each succeeding cycle, as follows: On unpaid water or sewer rent charges of:

(.1) semi-annual cycles -- 3%

(.2) quarterly cycles -- 1½%

(.3) monthly cycles -- ½ of 1%, except that a period of thirty (30) days shall elapse before the first additional penalty shall be imposed.

(c) If any water or sewer rent charge remains unpaid for two cycles after the bill has been rendered, the Department shall serve a notice upon the delinquent property owner and if the charge, with penalties thereon, is not paid within 10 days after such service, the Department may, in its discretion, deprive the premises of water until the charge with penalties is paid.