(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 15 of 15

Thread: Identical Toilets With Water Levels of Different Heights

Hybrid View

  1. #1
    DIY Junior Member kdgrant6's Avatar
    Join Date
    Mar 2013
    Location
    South Carolina
    Posts
    5

    Default Identical Toilets With Water Levels of Different Heights

    We have identical 3.5 gallon Kohler toilets (same model #s) that we purchased twenty years ago. Both have Fluidmaster 400A fill valves that are set as low as the screw mechanism allows. I've noticed (after complaints from my wife) that the water level in one toilet is 3/4" higher than it is in the other toilet. No adjustment I do will lower the water level in the higher one. Can anyone explain why?

    On another thread in this forum, someone suggests switching to a padded seat. I suppose that would work, but I don't understand why we have this difference.
    Last edited by kdgrant6; 03-03-2013 at 11:32 AM.

  2. #2
    Forum Admin, Expert Plumber Terry's Avatar
    Join Date
    Aug 2004
    Location
    Bothell, Washington
    Posts
    14,201
    Blog Entries
    1

    Default

    Water level in the bowl is determined by the top of trapway bend. It can't be higher than that. You can slowly pour water in the bowl and then mark it at it's highest level.
    If the bowl refill from the tank does not match that, check to make sure that the refill tube from the fill valve is pointed down the overflow tube. It should daylight above the overflow or it will siphon the tank.

  3. #3
    DIY Junior Member kdgrant6's Avatar
    Join Date
    Mar 2013
    Location
    South Carolina
    Posts
    5

    Default

    Thanks for replying. The problem isn't that we're losing water. The water level is too high in one toilet. For years, it wasn't a problem. Then the level changed in one, but not the other. I just don't understand how the same Kohler toilets with the same fill valve set at the same height results in water 3/4" higher in one of them. The refill tubes in both are pointed into the overflow tube, but not touching the water in the tube.

  4. #4
    DIY Senior Member wjcandee's Avatar
    Join Date
    Apr 2012
    Location
    New York, NY
    Posts
    1,590

    Default

    Terry was talking about the water level in the bowl. It's unclear whether you are talking about the water level in the bowl or the tank.

  5. #5
    DIY Junior Member kdgrant6's Avatar
    Join Date
    Mar 2013
    Location
    South Carolina
    Posts
    5

    Default

    I'm referring to the water level in the bowl. The water level in each tank is the same. The variance is in the bowl. The flush valves are run all the way down in each one.

  6. #6
    Forum Admin, Expert Plumber Terry's Avatar
    Join Date
    Aug 2004
    Location
    Bothell, Washington
    Posts
    14,201
    Blog Entries
    1

    Default

    Sometimes the direction the floor slopes is the difference.

    If the front of the bowl is low, it will hold more water.

Similar Threads

  1. Various Heights of Todays Toilets?
    By DanMcD in forum Toilet Forum discussions
    Replies: 3
    Last Post: 09-23-2012, 03:48 PM
  2. Test for salt/sodium levels in water
    By mrmichaeljmoore in forum Water Softener Forum, problems, installation and reviews
    Replies: 7
    Last Post: 11-18-2009, 08:15 AM
  3. re: water levels
    By mamoose in forum Drain Cleaning
    Replies: 2
    Last Post: 03-15-2009, 09:16 AM
  4. Water levels
    By Bodrey in forum Toilet Forum discussions
    Replies: 5
    Last Post: 02-14-2009, 07:49 PM
  5. why different toilet bowl water levels in 2 identical TOTO toilets?
    By yucatanc in forum Toilet Forum discussions
    Replies: 4
    Last Post: 07-04-2007, 08:30 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •