+ Reply to Thread
Results 1 to 4 of 4
  1. #1
    Join Date
    Feb 2008
    Posts
    8

    Default Reddish dust/sediment left in tub after bath

    We have two full baths on our second floor. In our guest bathroom we have a tub/shower. After bathtime and we drain the tub there is a reddish grit left on the bottom of the tub. This doesn't happen anywhere in any of the sinks or the master bath shower. Does anyone know what this could be and/or what I should do to try and find out what it is? I have already spoken with my plumber and he was miffed.

    Thanks
    Kate

  2. #2
    Join Date
    Mar 2008
    Location
    Wisconsin
    Posts
    76

    Default Re: Reddish dust/sediment left in tub after bath

    Do you know if you have galvanized piping running to the tub/shower? If this is the guest bathroom, and seldom used, perhaps it is rust sediment that has formed in the pipes and is flushed out when the tub/shower is used?

  3. #3
    Join Date
    Feb 2008
    Posts
    8

    Default Re: Reddish dust/sediment left in tub after bath

    In response-
    My plumber just couldn't think of anything that it could be. This has been going on for the past four years since we moved into our house and we live in a house that is over 100 yrs old. I mentioned to my plumber that maybe it was rust inside the pipes after sitting for a while but he also didn't think that was it either.

    Kate

  4. #4
    Join Date
    Aug 2007
    Posts
    1,131

    Default Re: Reddish dust/sediment left in tub after bath

    Private well or city water?

    If a well, have you ever had the raw water tested for iron content?

    The grit you describe sure sounds like ferric iron particles. If your well water contains ferric iron, then it really should show up everywhere in the house.

    However, if the well water contains ferrous iron.......then it's *possible* that the grit might only show up in the bathtub. Reason being that ferrous iron (iron in solution) will convert to ferric iron (particulate iron) when exposed to oxygen. Since the bathtub will contain a large amount of water with a large surface area, which also gets sloshed around (further aerating the water) and may remain inthe tub longer than the water in your sinks,etc does........ the grit may only show up in the tub.

    It's also possible that this is coming from an old iron pipe that feeds the tub (as already mentioned) or from a water heater that's rusting out internally. If the latter, you might only see it in the tub because that's where that large volume of water is which sits long enough for the rust particles to settle out.

    Same for a galvanized pressure tank that's rusting out internally.


    Do you have a water softener? It's possible that it's slugged with iron particles (if your water contains iron) and so iron is now being discharged from the unit. IOW, the softener is acting kinda like a tea bag.

    Are you using any bath additives? Strange things can happen chemically depending upon what ingredients your water contains. Precipitates can result.
    Last edited by goldhiller; 04-28-2008 at 10:10 PM.

Posting Permissions

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