NestAssociate is reader-supported. When you buy via the links on our site, we may earn an affiliate commission at no cost to you.

What Causes Yellow Stains in Bathtub, Sink, Toilet And Shower

What Causes Yellow Stains in Bathtub, Sink, Toilet And Shower

You won’t find anyone who likes dirty bathrooms. However, if you see yellow stains after entering a bathroom, you will think before use. So what causes yellow stains in bathtub, sink, toiler & shower, is a big question. Generally, hard water, iron in the water, tannins, and oily products are responsible for these stains. However, you can get remedies by using baking soda, whitening toothpaste, vinegar, and cleaning regularly.

We have highlighted causes, removal, and prevention in this article. Keep scrolling.

What Causes Yellow Stains in Bathtub?

When you see your bathtub and shower or toilet bowl have yellow stains, you first need to know the causes. Take the step before getting deeper. In this part, we discuss the causes. 

Hard water

In most cases, hard water encourages yellow stains in the sink, washroom, or bathtub. How? Well, hard water contains high favor of minerals with some of the chemicals like magnesium or calcium.

Hard Water

If you can’t figure out soft or hard water, you can test. For testing, you need a bottle, liquid soap, and water. For this, mix pure liquid soap with water; if you could, no doubt you live with hard water. Moreover, you can test from a verified laboratory.

Iron in the water

Iron in the water is a normal thing. But when water contains excessive iron, it introduces rust. So how can you understand the rust? Nothing else but you see yellow, red, or orange tint in water. However, rust does not contain a bad smell but stains in your tub and toilet.

Emitting oil from bath products

As we know, most bathroom products use purified oil. However, when you wash or clean your body, used oil washes away. Moreover, using oily products near the tub or sink is usual. This oil remarks with yellow color to tubs, sink, and bowls. 

So, you should perform cleaning of tubs or sink after washing lotion, cream, gel, or something.

Tannins in the water

What Causes Yellow Stains in Bathtub

Tannins bring odor and provide yellow-colored water. So, normally bathtub, sink, shower, and toilet bowl consume the color. However, it is not harmful to the body but experiences odd colors to the toilet.

If you want to get rid of it, you need filters. Moreover, to determine tannins in the water, you need to keep a glass of water for a whole night. If intensity remains the same without any change, tannins are on.

What Causes Yellow Stains in Bathtub: How to remove yellow stains

As we read above, yellow stains start to be seen in a bathtub and other surfaces. So, now you need to get rid of it.

You can rely on vinegar, lemon, and even baking soda for this kind of action. Those items are effective and timely actioned.

White vinegar

White vinegar helps to remove yellow stains from the tub, sink, and other surfaces. However, you just need to spread it over the stains. If you have a deep yellow color on the tubs, use the vinegar several times. After scrubbing and rinsing, you will get the result.

Baking soda

Baking Soda

Using baking soda is a traditional thing. The availability and effectiveness of baking soda are top classes. To remove yellow stains from the toilet, you need to mix them with hydrogen peroxide. So you require 50ml of moderately hot water hydrogen peroxide (ratio will be 2:1). After applying and wiping for a while, you see the removal of yellow stains within 30 minutes.

Moreover, you can use Salt with lemon, scrubbing your toothpaste to the stains. 

Read More Related Article

How to prevent yellow stains on your bathtub and other surfaces

Here are some tips to prevent yellow stains-

  1. Clean regularly.
  2. Avoid hard water by adding softer water.
  3. Ensures filters.
  4. Increase water pressure when flushing or cleaning.


Still, are you wondering what causes yellow stains in bathtub? We hope you have connected with the causes of yellow stains in the bathtub, sink, toilet & shower. You need to take care of your toilets before happening this dilemma. If it happens, all you need is to apply the cases that we have discussed. Thank you for being with us.

You can easily find the best products according to consumer reviews and ratings. Our AI technology finds the best product and describes it according to customer reviews. Not all information on this blog is 100 percent accurate.