Asked on Jan 26, 2017

I keep getting mold under the water in one of three toilets- help!

by Bww18486236
This started about six months ago and do not know what causes it. Within three days of cleaning it, it starts growing again and eventually covers the toilet under the water. No mold grows in the toilet outside the water. I tried using vinegar two days ago and low and behold, it is starting to grow again.
  8 answers
  • Janet Pizaro Janet Pizaro on Jan 27, 2017

  • Johnchip Johnchip on Jan 27, 2017

    Try cleaning your upper tank with clorox, and keep some sort of clorox/

    cleaning tab in the tank.

  • William William on Jan 28, 2017

    The most common cause of mold in a toilet bowl is stagnant water. Stagnant water occurs when the toilet is not flushed on a regular basis. Additional causes include mold spore growth in the toilet tank. In addition, a particular strain of mold that is referred to as "slime mold" is extremely difficult to remove, even with the application of chlorine bleach. Slime mold is a specific classification of mold in which a slimy coating develops over the mold to protect it in certain environments. In order to safely remove mold from a toilet bowl, the entire colony must be eradicated. Mold colonies can be removed with a strong scouring pad followed by a double application of chlorine bleach in the toilet bowl and tank.....It's been said that diabetics experience mold growth in their toilets. It's been said by some that it is more of a northwest issue for diabetics, than it is for anywhere else in the country. It's also been said that this is something that happens to diabetics that have higher numbers. Some diabetics have had black mold popping up shortly after they began taking Invokana… which causes them to expel extra sugar thru urination! This feeds mold spores.

  • Haysha S. Haysha S. on Jan 29, 2017

    I thought that mold needs oxygen, and therefore can't grow under water? Maybe it's some type of algae growth.

    • See 1 previous
    • Haysha S. Haysha S. on Jan 30, 2017

      Good Idea Karen!

  • Hillela G. Hillela G. on Jan 29, 2017

    I agree, try the upper tank with bleach, maybe try one or two times to make sure to get it all.

  • Sophia,M.,McConnery Sophia,M.,McConnery on Jan 29, 2017

    The mix of bleach and dish soap helps a lot.Just a couple drops of dish soap,and a cap of bleach!

  • Dena Bellamy-Arnold Dena Bellamy-Arnold on Mar 29, 2019

    I had this problem in my mater bath and I drained the water and let it set for a week... during the week I put different cleaners on it but mostly just let it dry out... it has been 3 weeks since i put water back in the toilet and nothing has grown back...I figured that if it grows in water it might die without it.

  • Amanda Alkire Amanda Alkire on Apr 09, 2020

    Is this kind of mold harmful in any way