Water Level in Toliet Bowl Too Low Home › Forums › Public Forums › General Plumbing › Water Level in Toliet Bowl Too Low This topic has 1 reply, 2 voices, and was last updated 20 years, 11 months ago by Retired plbg1. Viewing 1 reply thread Author Posts 21 Oct 2002 at 6:13 pm #275883 Robert M Statile Water flows freely through the white tube to fill up the tank, however, the water level in the toliet bowl is extremely low 21 Oct 2002 at 10:39 pm #293062 Retired plbg1Participant The white tube is not for your tank to be filled it is to fill up bowl for a trap seal. That tube has to go in the 1″ pvc over flow pipe to maintain a trap seal. Take it and put it inthe overflow pipe about 1/2″ no farther.Art retired plbg 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