It shall be the duty of the authorized Fulton County Department to prepare and mail
to each owner or commercial lessee of all premises or facilities served by sewerage
connection within the Sewerage System of Fulton County, at the end of each service
period, a statement showing the entire amount due for such service period. The sewer
service charge as so billed shall be payable at the office of the Fulton County Finance
Department, or a municipality within Fulton County, as an agent for Fulton County,
when so designated, on or before the 15th day of the month following each period.