All rental charges prescribed by this article shall be a lien upon the premises and real estate for which the sewer service is supplied and used and if not paid when due such charge shall be certified to the city treasurer and may be recovered by the City in an action at law and such delinquent charges may be certified to the county clerk and assessed against the real estate and premises served and be collected and returned in the same manner as other city taxes are certified, collected, and returned.