How to Remove Pink Stains from Toilet Bowl in 3 ways

Do you recently notice Pink Stains grow all over the toilet? How much you’ve tried to get rid of this pink stuff, but it is still there and spread faster?

I had my Kohler Elliston same Pink stuff occur, again and again. I tried everything and finally prevented the Pink molds from the toilet. 

Pink Ring or Stains cause by one type of Bacteria-  Serratia marcescens. Serratia Marcescens grow all over moist places like toilets, bowls, toilet tanks, sinks, bathtubs, showerheads, etc.

To remove pink stains from the toilet bowl- use chlorine solutions.

What Causes Pink Stains in The Toilet Bowl & Tank?

Pink stains are caused by bacteria known as Serratia Marcescens. It is widely grown in moist places like a toilet bowl, tank, sink, bathtub, showerhead, bathroom wall, even wet mattress.

Serratia marcescens toilet

Serratia Marcescens, the bacteria present in the air, thrives if the place has no sunlight, fatty agents present, or phosphorus content.

Because the bacteria can get their nutrition from human feces, soil, soap, oil. Although, and the maximum pink mold ring in toilet finds either a toilet bowl or bathtub.

Fusarium and Aureobasidium Pullulans are the other species of bacteria causing pink mold.

Read MoreCausing of Black Mold In Toilet Bowl

Why is The Ring Pink Instead of Other Colors? 

The airborne bacterium is either pink or slightly reddish. Pink pigment present in Serratia Marcescens. When the bacteria become colonized, the Pink color has become more visible.

Read More- Causes of Toilet Rings

How to Remove Pink Stains from Toilet Bowl, Tank

Removing bacteria is quite easy. But do you know they come back in few days, and the growth will double?

Instead of removing bacterium killing is more important. The easiest way to remove Pink stains is either clean with bleach-containing cleaner (From Amazon) or with Hydrogen Peroxide cleaner.

Method1- To Get Rid of Serratia Mercescens From Toilet Use Chlorine Containing Cleaner

All you need for-


  1. Take the Chlorine cleaner and spread it all over the affected areas.
  2. Use brush spread well and coat over the Bacteria slime.
  3. Leave like this for two to three minutes after a rub with a brush.
  4. Pour how tab water in the toilet bowl, then flush normally.

Method2- Remove all Pink stuff from the toilet using Baking Soda+ Vinegar

All you need to perform

  • Gloves
  • Baking Soda
  • Vinegar
  • Hot Water
  • Toilet Brush
  • Bleach


1. Dry out the Bowl

Before doing anything, take an old cloth and dry out the bowl, all affected areas like under the rim, below the bowl water line, toilet seat, etc.

2. Make a Paste

Take one cup of Baking Soda and add Vinegar to make a thick paste.

3. Stick The Paste

Now adhere the thick paste all over the porcelain bowl, seat, and all. Make sure it is thick to the wall. Let it be more than one and half-hour.  

4. Cleaning Time

Take the toilet brush, brush it off all over the affected areas, spray once Vinegar, and pour two gallons of water into the bowl.

Wipe out the seat areas.

5. Disinfected Time

Make a solution of one cup of bleach into one gallon of water. Pour the solution into the toilet tank.

Leave it for five minutes and flush it.

(Note- Turn off the water line after flushing the toilet, so you can pour the bleach solution into it.)

Bleach is harsh on the toilet gasket, flapper, and septic tank, but if you dilute it with water at a 1:10 ratio.

Method3- How to Get Rid of Serratia marcescens by Use of Hydrogen Peroxide

Hydrogen Peroxide is a great sterile agent. It has the ability to kill the microspore (Milds, Bacteria)

You need for the process-


  1. Open all windowpanes and make sure the room is well aerated.
  2. Pour half a cup of Hydrogen Peroxides into the bowl.
  3. Apply a toilet brush to spread the cover and make a good coating on the wall.
  4. Close the lid and leave it for 15 minutes.
  5. Next 15 minutes, lightly brush the affected area ( underwater, under the rim).
  6. Rinse thoroughly.

Method4- Remove Pink Spots in toilet bowl By STEAM CLEANING

  1. Take out your portable steam cleaner, attach the angular nose.
  2. Turn on the vapor cleaner with high pressure.
  3. Flutter the nozzle over the contacted zones.
  4. Add Vinegar alternatively of water and spatter over there.
  5. That way, the soil, bacteria exclude. Sustain the process until the culprits are coming out.
  6. Following that, wipe out with the help of an old rag or dry washcloth.

Those are the best process to get rid of Pink Ring in the toilet bowl. 

Is Pink Ring/ Serratia Marcescens Dangerous?

Usually, Serratia Marcescens are present in the air, and they do not show the harmful effect at that moment. 

Nevertheless, while Serratia bacteria spread out in usable areas, it might be dangerous and cause UTI infections.

The bacteria can cause infections, allergic reactions, even serious threats for humans. Therefore, it is necessary to get rid of the pink bacteria.

Aureobasidium Pullulans is more harmful if it presents a longer time. They can circulate with house air and easily catch the reactions.

Pink Mold Symptoms

If anybody is allergic to molds, then these are the symptoms that occur-

  • Sneezing
  • Red burning eyes
  • Runny nose and eyes
  • Itching
  • Skin irritation
  • UTI infection
  • Breathlessness
  • Headache

2000 flushes turn toilet water pink

Sometimes, especially after a lot of flushing, the water in your toilet bowl will turn pink or red. Serratia marcescens, a non-harmful bacterium that lives in soil and water, is typically to blame for this. In warm, moist conditions like your toilet bowl, the bacteria can swiftly flourish.

Although the pink or red tint may be unsettling, there is typically nothing to be concerned about. Humans are not harmed by microorganisms, and no illnesses will result from them. You can ask your local water utility for more details, though, if you’re worried about the color of your toilet water.

Bottom Line- Prevents Pink Stains From Toilet

Although, Pink Molds or Pink rings do not harm healthy people. If somehow the person has wound and contact with the Bacteria that’s going to be lethal.

So it is necessary to exclude pink stains and prevents them from further growing.

  • Clean thoroughly the pet’s things, all affected areas with strong chlorine cleaner or Hydrogen peroxide.
  • Follow up a routine clean-up with Baking soda+ vinegar.
  • Every alternative week make a dilute bleach solution and pour it in the tank, then flush.
  • Don’t scratch the porcelain surface with steel wool and all, it may increase the growth of bacteria.
  • All the cleaning process, dry the bathroom areas.
  • Create a well-ventilated area. So the fresh air circulate.
  • Bring the sunlight in the bathroom. Bacteria or mold does not like the Sun.

Read More- How To Prevent the Toilet From Stains Naturally


Q1. Is Serratia marcescens harmful?

Serratia marcescens is not as harmful as black and white mold. But it may cause a severe allergic reaction. Contamination of pink bacteria can cause UTI infection.

Q2. Can Serratia marcescens cause a UTI?

Serratia marcescens in the bathroom is noxious because it can provoke respiratory infections, and UTIs.

Those who have spore sensitivity get critical allergic results. Contamination with these pink stains can commence to redness of the eyes, swelling, and so on.

Q3. Pink ring in Toilet Bowl Diabetes Sign?

Pink Ring in a toilet bowl does not directly indicate Diabetes.
For those who have diabetes, their blood sugar level is high, and the extra sugar is found in the urine.

Molds love to eat sugary foods. A study explains that people who have diabetes molds transpire more often than those who do not.

Q4. Why does urine leave a red ring in the toilet?

Urochrome, a substance found in urine, is responsible for this behavior. This substance oxidizes and turns red when it comes into contact with air. Small red crystals that have grown on the surface of the toilet bowl are what make up the red ring.
Additionally, brown or orange stains from urine can appear in the toilet bowl. These stains are typically caused by various substances found in urine, such as bilirubin or uric acid.

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