Why is my toilet water red?
Sophia Koch
Updated on February 26, 2026
If you've noticed a pink or red slimy substance forming in your toilet bowl, you're not alone. It is bacteria known as Serratia marcescens, according to Roxanne Johnson, North Dakota State University Extension Service water quality associate.
How do I get rid of red toilet water?
If you see a red or pinkish ring developing in your toilet bowl, it's time to use chlorine bleach in a spray solution. Thoroughly clean the bowl and then spray it with chlorine bleach. Let it sit in the bowl for about 15 to 20 minutes. You should also put about a 1/4 cup in your toilet's tank at the same time.Why is my toilet water turning pink?
The pink colour is due to a pigment secreted by a species of bacteria known as Serratia marcescens, found naturally in soil, air and water. They can cause infections, but that generally happens in hospitals and affects people with compromised immune systems.Is Serratia marcescens harmful?
Today, Serratia marcescens is considered a harmful human pathogen which has been known to cause urinary tract infections, wound infections, and pneumonia. Serratia bacteria also have many antibiotic resistance properties which may become important if the incidence of Serratia infections dramatically increases.How do you get rid of Serratia marcescens in the toilet?
To control Serratia marcescens in toilets
- Clean the bowl thoroughly and spray chlorine bleach into the bowl and under the bowl rim.
- Also add 1/4 cup of bleach to the toilet tank.
- Let the bleach stand for 15 – 20 minutes.
How to Fix A Running Toilet GUARANTEED | DIY Plumbing Repair
Can Serratia marcescens be cured?
Abstract. An old man receiving peritoneal dialysis was diagnosed with Serratia marcescens peritonitis, a rare case with poor prognosis. Powerful antibiotics based on culture results and enough duration cured the case successfully despite its high virulence.How do I know if I have Serratia marcescens?
Symptoms may include fever, frequent urination, dysuria, pyuria, or pain upon urination. In 90% of cases, patients have a history of recent surgery or instrumentation of the urinary tract.What happens if Serratia marcescens is left untreated?
S. marcescens has been shown to cause a wide range of infectious diseases, including urinary, respiratory, and biliary tract infections, peritonitis, wound infections, and intravenous catheter-related infections, which can also lead to life-threatening bacteremia.How did I get Serratia marcescens?
The major factors that are involved in the development of the Serratia infection include contamination of the respiratory equipment and poor catheterization techniques. Most of the outbreaks have been reported from the paediatrics ward.What disinfectant kills Serratia marcescens?
Though Serratia will not survive in chlorinated drinking water, the bacteria can grow in toilets where water is left standing long enough for the chlorine to dissipate. To kill the bacteria, clean affected surfaces with a strong chlorine bleach solution.Why is my toilet water rusty looking?
You may have too much iron in your water. An excess of iron in your home's water creates rust (iron + oxygen), which means you'll notice orange/brown colors in multiple plumbing fixtures. In severe cases of iron excess, you could have iron bacteria, which live and multiply by oxidizing dissolved iron.Is it OK to put bleach in toilet tank?
"The biggest don't when it comes to toilet tanks is bleach—do not use bleach or products containing bleach inside the tank, as it can corrode the internal parts of your toilet. If you are aiming to remove tough stains from the tank, I also recommend white vinegar diluted with water."How do you prevent pink water stains?
The Best Ways to Prevent Pink StainsKeep your bathroom dry, and the humidity at its lowest. Turn on a ventilation fan to keep the air circulation running, and open a couple of windows to decrease humidity. Keep your toilets clean as well, to prevent the bacterial colonies from making homes in them.