All drainage of every character whatsoever within the City of Baltimore, be it from rain-spouts or from any other conceivable source, which naturally or artificially flows outward and across the line of the public sidewalks into the gutter-ways or other means of discharge, shall be conducted under instead of across the surface of said sidewalks. City Code, 1927, art. 45, §88 1950, art. 35, §38 1966, art. 26, §17 1976/83, art. 26, §20 Ord. 04-111