It is unlawful for any person to wash or drain into any street, alley or other public place in the city any water from his house or premises or to allow any filth or water to escape from his premises upon any of the places above mentioned or upon property contiguous thereto. No auto or other vehicle shall be washed at any place within the city where the water, dirt, or other substances removed therefrom will drain into any street or sidewalk of the city. (1997 Code § 14-107)