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Old 10-13-2009, 03:07 PM
 
Location: NJ
1,589 posts, read 3,526,986 times
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Default Pink water stains

Over the past few months I have been noticing pink water stains inside our toilet bowls at the top of the water level, and also just below the bath tub faucet (which has a tendency to drip after each use). What causes the pink discoloration?
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Old 10-13-2009, 03:09 PM
B4U
 
Location: the west side of "paradise"
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The onset of mildew or the possiblility of heavy iron in your water. I would think the first though.
You need to fix that drip, then wash with bleach & water.
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Old 10-13-2009, 03:54 PM
 
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There is all kinds of mold and different colors.Some effected by the things in the water itself;I suspect.
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Old 10-13-2009, 04:18 PM
 
Location: Alexandria, VA
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We get the pink also, I assume it's some mineral in the water. I admit I'm not so good about cleaning the toilet, tub, etc. as often as I should but don't let it go - it gets to be a hard scale. If you stay on top of it, it cleans up easily, if you've let it go and it gets to be a hard scale/crust, use some sandpaper - on the scale, don't sand the toilet itself, if you are gentle the crust will come off and it won't damage the porcelein.
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Old 10-13-2009, 09:59 PM
 
Location: Somewhere in northern Alabama
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Quote:
Originally Posted by ansky View Post
Over the past few months I have been noticing pink water stains inside our toilet bowls at the top of the water level, and also just below the bath tub faucet (which has a tendency to drip after each use). What causes the pink discoloration?
Aspergillus mold.
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Old 10-14-2009, 08:53 PM
 
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It could be an airborne bacteria called serratia marcescens. I asked a co-worker the same question last year -- tiny pink stains on the edges of my bathtub -- and he told me about it.

Here's an excerpt from wikipedia:
S. marcescens is commonly found growing in bathrooms (especially on tile grout, shower corners, toilet water line, and basin), where it manifests as a pink discoloration and slimy film feeding off phosphorous containing materials or fatty substances (such as soap and shampoo residue). Once established, complete eradication of the organism is often difficult, but can be accomplished by application of a bleach-based disinfectant. Rinsing and drying surfaces after use can also prevent the establishment of the bacteria by removing its food source and making the environment less hospitable.

Some websites report that it's harmless but others indicate that it may be associated with urinary and respiratory tract infections and other serious problems. I use Clorox regularly on my tub now -- but I dont know if I'd use it in the toilet. Could it harm the plumbing?

Last edited by TFW46; 10-14-2009 at 09:16 PM..
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Old 10-14-2009, 09:17 PM
 
Location: Somewhere in northern Alabama
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Kewl. Didn't know about that one. We were taught is was a form of aspergillus in food safety courses. Repped you.

Chlorine and plumbing - generally safe in toilets, fine with PVC drains, can speed corrosion of cast iron drains, NOT good when kept in constant contact with chromed drain fixtures like tub and sink drains.
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Old 10-14-2009, 09:32 PM
 
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I cant rep you again yet -- but thanks, harry!
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Old 10-14-2009, 09:35 PM
 
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Here are a couple of informative sites that I bookmarked last year:

City of St. George, Utah :: What's that pink stuff in my bathroom?

http://www.townofcary.org/__shared/assets/pinkdiscoloration11135.pdf (broken link)
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Old 10-16-2009, 05:56 AM
 
Location: Saylorsburg
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http://www.clcjawa.com/TechData/033006-22-OPF042006_Feature_3.pdf (broken link)
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