Upon any person engaging or continuing within this City in any public service or utility business, except railroad, railroad car, express, pipeline, telephone and telegraph companies, water carriers by steamboat or steamship and motor carriers, there is likewise hereby levied and shall be collected taxes on account of the business engaged in equal to the gross income of the business at the following respective rates: street and interurban electric railways, 50¢ per $100.00; water companies, other than Municipal water companies, $4.00 per $100.00; electric light and power companies, $4.00 per $100.00 on sales and demand charges for domestic purposes and commercial lighting and $3.00 per $100.00 on sales and demand charges for all other purposes, except as to income received by municipally owned plants producing or purchasing electricity and distributing same; natural gas companies, $3.00 per $100.00, on the gross income; toll bridge companies, $3.00 per $100.00; and all other public service or utility business, $1.1500 per $100.00. The measure of this shall not include the gross income derived from commerce outside of this City. The measure of the tax under this section shall include only gross income received from the supplying of public services. The gross income of the taxpayer from any other activity shall be included in the measure of the tax imposed upon the appropriate section or sections of this article. (6-13-05)