All bills shall be rendered quarterly and shall be due when mailed to the last known address of the party owing same. Each bill shall be a debt due the city and the amount thereof and charges evidenced thereby if not paid when due shall constitute a lien upon the premises served by the municipal sewage system. If the bill is not paid within 30 days after the same is due, it shall be deemed delinquent and the amount thereof, together with a penalty of 10%, and a reasonable attorney's fee shall be recovered by the Sanitary Board in a civil action in the name of the city. The lien procured in connection with any such action shall be foreclosed in due course against the lot, parcel of land or building charged with the amount due, in accordance with the laws relating thereto.
('71 Code, § 945.07) (Ord. 110, passed 7-31-57) Penalty, see § 101.99