However the pink ring that develops at the water line in the toilet around drains in the tub shower area in bathroom drinking cups and even dog bowls is actually caused by airborne bacteria known as serratia marcescens.
Light pink ring in toilet bowl.
Each year a few customers call to ask us about pink stains or residues that occasionally develop in moist areas in their homes.
The airborne bacteria thrive on moisture dust and phosphates.
It probably isn t rust or a mineral.
That ring of pink slime around your toilet bowl is a far cry from the squeaky clean look you re going for.
A black ring in your toilet bowl is a pretty gross sight to behold.
The bacteria that causes these pink stains is serratia marcescens which is found naturally in the environment.
Follow these steps to get black stains out.
For example serratia marcescens is a bacterial species common to bathtubs showers and toilets and characterized by a pink ring.
Pink bathroom stains are fairly common.
The black ring could be caused by mold or mildew.
The airborne bacteria thrive in moist environments which is why it is commonly found in bathrooms.
This bacteria isn t as harmless as it was once thought to be but it isn t a cause for alarm either.
Black toilet bowl stain.
Other considerations if you see a red or pinkish ring developing in your toilet bowl it s time to use chlorine bleach in a spray solution.
Click on image for better view.
Let it sit in the bowl for about 15 to 20 minutes.
This pink ring has been confused with iron containing hard water which produces an orange rust colored ring discussed below.
Once you understand the stain s source you ll be able to get back to porcelain perfection.
The bad news is that slimy anaerobic bacteria called serratia marcescens cause this ring.
The film is usually found as a ring that accumulates at the water line in the toilet bowl or on shower doors sink drains and bathtubs.
Spray a non bleach toilet bowl foam around the.
That pink ring in the toilet just above the water line could be caused by minerals in the water but more likely it s from a colony of the airborne bacteria serratia marcescens.
No matter which of these is the cause there is one easy solution for this problem.
Pink stains in your toilet bowl the bacteria serratia marcescens causes pink stains.
But you re not alone.