A. Definitions: The phrases and words "journeyman plumber", "plumber's apprentice", "plumbing contractor" and "plumbing", when used in the ordinances, regulations and other official acts and communications of this city, shall have the meanings respectively prescribed for them by 59 Oklahoma Statutes sections 1001 through 1020, unless the context clearly indicates a different meaning.
B. Registration Required: It is unlawful for any person to engage in the business, trade or occupation of a plumbing contractor (otherwise known as a master plumber), or of a journeyman plumber, or of a plumber's apprentice, in this city unless he is registered with the plumbing inspector and has a current and valid certificate of registration issued by the plumbing inspector.
C. State License Required: Only persons who have a current and valid license as plumbing contractors or as journeyman plumbers issued by the state commissioner of health as provided by 59 Oklahoma Statutes section 1001 et seq., may register as such with the plumbing inspector. Only persons who have current and valid certificates of registration as plumber's apprentices issued by the state commissioner of health as provided by the same, may register as such with the plumbing inspector. (1989 Code § 5-202)