Upon ascertaining the amount due the City for electricity and water furnished to the consumer, the Public Utilities Department shall render the consumer a bill for the amount due. The handing of a bill to such consumer in person, or the placing of the bill in an envelope addressed to the consumer at his or her last known address as furnished by the consumer to the Public Utilities Department, affixing the proper postage, and depositing the same in the course of transmission with the United States Postal Service, shall constitute "rendering a bill." (Ord. 4017 § 1 (part); June 5, 1979: Ord. 5855 § 9; April 29, 2003.)