Section 28-601.1. Update

No  later  than the third year after the effective
  date of this section and every third year thereafter,  the  commissioner
  shall  submit  to  the  city  council proposed amendments that he or she
  determines should be made to this code to bring it up to date  with  the
  latest  edition  of  the International Plumbing Code or otherwise modify
  the provisions thereof. In addition, prior to  the  submission  of  such
  proposal  to  the  city  council, such proposal shall be submitted to an
  advisory committee established by  the  commissioner  pursuant  to  this
  title for review and comment.