Discharge line from a dishwasher Home › Forums › Public Forums › General Plumbing › Discharge line from a dishwasher This topic has 1 reply, 2 voices, and was last updated 21 years, 5 months ago by Selgas. Viewing 1 reply thread Author Posts 14 Nov 2002 at 2:30 am #275985 bpaige I am moving my dishwasher 12 feet from my sink. How long can you run a discharge line to a tail piece on the kithen sink? Or do you need to run a seperate drain line? 16 Nov 2002 at 5:29 am #293230 SelgasParticipant Run a new drain line with a water trap in it. Selgas Services LtdCraftsman Gasfitters, Plumbers, Electrical Service Technicians 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