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  1. #1
    Join Date
    Apr 2011
    Location
    Central Texas
    Posts
    5

    Default Growth in Toilet Tank

    Forgive me for this is my first post. I am wondering if any one knows what this "growth" in the toilet tank may be. It is a hard white substance that is at every penetration through the water line and around the rim of the water line on the edge of the tank. I've seen it occasionally and have disregarded it bu this tie it was much more pronounced. If it helps this was found in Central Texas about an hour north of Austin.

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  2. #2
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,245

    Default Re: Growth in Toilet Tank

    Mineral deposits from the water, calcium deposits as I recall.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  3. #3
    Join Date
    Dec 2008
    Location
    Maryland
    Posts
    2,776

    Default Re: Growth in Toilet Tank

    If the deposits are hard,
    I would also say it is from minerals in the water that are building up at the surface line.
    Something like a stalactite, stalagmite formation.


  4. #4
    Join Date
    Mar 2007
    Location
    Spring Hill (Nashville), TN
    Posts
    5,847

    Default Re: Growth in Toilet Tank

    Did you ever make Rock Candy as a kid? Well this is not candy but it is a similar process...

    Scott Patterson, ACI
    Spring Hill, TN
    www.traceinspections.com

  5. #5
    Join Date
    Aug 2011
    Location
    Bennett (Denver metro), Colorado
    Posts
    1,394

    Default Re: Growth in Toilet Tank

    Parts of Texas has heavily mineralized (hard) water. I grew up with that kind of water in Texas. Do you use this toilet often? A lightly used toilet seems more likely to get this sort of mineralized deposit. In any event, it's harmless, but a nuisance. Are you on a well?

    If the "growth" is soft, spongy, etc., then it probably isn't mineral deposits.

    If you choose not to decide, you still have made a choice.

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