There is levied a tax on the furnishing of a solid waste collection service, including the collection of recyclable materials, and for the privilege of carrying on said business a tax equal to twelve percent of the total gross income derived from such business in the city. (Ord. 2953 § 2, 2015; Ord. 2928 § 2, 2014; Ord. 2301 § 2, 1993)