§ 51.13 LICENSED PLUMBER TO MAKE CONNECTION.
   The construction of laterals for the connection of the water or sewer pipes on any lot with water or sewer pipes in any street or alley, and the necessary excavation thereof, shall be done only by a licensed plumber with the approval of the Superintendent of the Water and Sewer System.
('70 Code, Ch. F, Art. II § 3) Penalty, see § 51.99