What are common types of stains/rings in the toilet?Updated 20 days ago

There are a few types of stains/rings you may see in your toilet:

• Yellow or Brown Stains: these are usually hard water stains and come from buildup of hard water minerals. These can be found in the toilet bowl or the toilet tank.
• Red or Orange Stains: these are rust stains, caused by iron present in the water.
• Blue or Green Stains: these are stains from mold or mildew growth.
• Pink Slime Stains: typically, these are found at the water line in the toilet bowl and are caused by bacteria.
• Black Spores: these stains are a build-up of minerals, fungi, and mildew settling on the porcelain surface of the bowl.
• Scale: Limescale is a chalky substance created by water that comes in contact with calcium and magnesium.