§ 143-5. Specific prohibited substances in streets and waters.

It is declared to be unlawful for any person to place, deposit or discharge, or to cause, suffer or permit to be placed, deposited or discharged, any oil, grease, animal fat, petroleum, naphtha, liquid asphaltum or any kindred substance, or any iron or metal, or iron or metal filings, waste of byproducts, paper pulp, industrial wastepaper, sand, gravel or water mixed with any of such substances or any inorganic acid in a concentration of more than one to one hundred (1:100) into any spring, pond, stream, lake, river, well or other body of water within the city, or into any public sewer or drain in the city or laterals connected therewith in the city, or on or upon any street, alley or public place, or upon any private property in the city, in such manner that the same will be permitted to run into any such sewer or drain or lateral, or in such manner that the same will flow or stand in or upon any street, sidewalk, gutter or other public place in the city; provided, however, that nothing contained herein shall prohibit the use of such substances in making authorized street improvements; and provided further that this section shall not be construed as prohibiting the ordinary drippings of oil from motor vehicles and other motor-propelled vehicles. Nothing in this section shall be construed so as to prevent or prohibit the city from the use and application of oil in connection with the care and maintenance of its streets or from the use of any oil or chemical substance in connection with the health and safety of the public.