Toilet Design Regulations Home › Forums › Public Forums › General Plumbing › Toilet Design Regulations This topic has 1 reply, 2 voices, and was last updated 21 years, 2 months ago by Jerry Peck. Viewing 1 reply thread Author Posts 4 Oct 2002 at 3:09 pm #275831 MasterPlumbersKeymaster Probably a strange question, but … Does anyone know if there are any regulations as to the design of a toilet other than the gpf limitation? Thanks, David Allen[email protected] 6 Oct 2002 at 7:53 pm #292975 Jerry PeckParticipant You mean such as the bowl is supposed to be washed clean with each flush? Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In