All drains or connections designed or intended to receive and discharge ground waters, surface waters, storm waters and other drainage, shall be considered illegal connections if they discharge directly or indirectly into the sanitary sewer system. Such illegal connections include, but are not limited to, roof drains, downspouts, footing drains, areaway drains, drain tiles and sump pumps used to collect and discharge same, yard drains, catch basins and inlets. Such connections shall not be allowed to discharge directly or indirectly into the sanitary sewers.
(`95 Code, § 51.39) Penalty, see § 51.99