The sanitary sewerage system of the City consists of trunk, interceptor and collection sewers, laid in streets, alleys, rights of way, and easements, and one wastewater treatment plant, the location of which are shown on plans and drawings filed in the office of the City Engineer, and all other appurtenances which are used in whole or in part in connection with the collection, treatment, and disposal of sanitary and industrial wastewaters; and all other extensions, additions and improvements which may be made to such system. Its purpose is to provide for the collection and treatment of sanitary wastewater and such industrial wastewaters as are permitted by this chapter, in order to protect the health, safety, and general welfare of the residents of the City. The purpose of this chapter is to protect the wastewater collection and treatment facilities by controlling the quantity, quality and manner of discharge of wastewater into the sanitary sewerage system and to satisfy existing requirements of the State and Federal Environmental Protection Agencies.