Adding toilet to a basement Home › Forums › Public Forums › General Plumbing › Adding toilet to a basement This topic has 1 reply, 2 voices, and was last updated 23 years, 10 months ago by SylvanLMP. Viewing 1 reply thread Author Posts 4 Jul 2000 at 9:23 pm #273163 Anonymous I am preparing to pour a concrete floor in a basement, located in an existing structure. We want to add a toilet to the finished basement, however it is below the septic tank. Can anyone offer any suggestions on tying into the existing sewer system? 4 Jul 2000 at 11:38 pm #287008 SylvanLMPParticipant What is the existing material of piping? 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