The city council finds and determines that there is a public need to control the quality of stormwater drainage flowing through the municipal storm sewer and into the waters of the United States and, further, that this is a matter that affects the public health, safety and welfare of the inhabitants of the city. Therefore, it is necessary for the city to provide a comprehensive system of regulation and enforcement for the control of the quality of stormwater drainage through the enactment of this article. (Code 1979, § 39-160)