How To Remove Limescale From Toilet Below Waterline In 2024

How To Remove Limescale From Toilet Below Waterline

It doesn’t matter how much you clean your toilet bowl, limescale accumulation makes it look ever dirtier. When limescale deposits form, they start out as a brown stain that grows black over time. It ruins the overall look of your entire home.

In this article, we cover the solution of the most annoying problem: How To Remove Limescale From Toilet Below WaterLine. In your toilet, limescale also refers to stains or a stain line caused by standing water for a long time. Let’s discuss in briefly;

How To Remove Limescale From Toilet Below Waterline

The part of the system that is always damp forms a limescale below the waterline. The buildup above the waterline can also be removed with a toilet cleaner. But we will explain many ways to remove the Limescale.

What Is Limescale?

In your toilet, limescale appears as a hard, chalky deposit. In kettles, hot water boilers, pipework and other appliances, it consists primarily of calcium carbonate.

In areas with standing or hot water, it is common. There can also be limescale on the inside surfaces of old pipes where hard water evaporated. Hard water buildup causes limescale to form.

Best Ways to Remove Limescale from Toilet Bowl

Here we discuss the natural and best practice to remove Limescale from the toilet bowl. It includes natural and chemical methods. Apply the best that suits your toilets.

Baking Soda

The first method to clean Limescale from the toilet bowl is by using baking soda.The first step is to empty your toilet bowl, followed by the application of 6 tablespoons of baking soda mixed with 2 tablespoons of water.

You should apply the paste directly to the stains and it should be thick. When the limescale has dried, scrub it off with a brush.

A sanding scrubber can also be used if you cannot get the job done with a regular brush. In addition to scrubbing, another limescale remover may also be needed for stubborn stains.

Coca Cola

Another easy way to remove the Limescale is by applying Coca Cola. Although this process is pretty easy, it is not recommended for the thick limescale.

You must also pour Coca-Cola all around the bowl to remove limescale below the waterline with Coca-Cola. If you pour Coca Cola in that water line, you must wait two to three hours for it to work properly.

There is not an exact quantity of Coca Cola that needs to be poured in there. You can easily get rid of limescale by repeating that process until you get rid of it by scrubbing first with bath scrub, then flushing it.


A decent store-bought descaler can easily remove limescale from your toilet. There are instructions on the label for everything you need to know.

You may have to use limescale remover more than once if the condition of your toilet is particularly bad.

The highly concentrated nature of store-bought descalers often makes them effective on really grimy toilets.

Acid Method

In this method, we will explain how you can remove the limescale from the toilet bowl below water using chemicals. If you wish to get the result fast then this method is recommended for it.

The acid process can also solve your problem in a mint. You must remove the little liquid from the container in order to equalize the water level.

A few hours after pouring the acid down the plughole, it should sit there for a few hours. It is best to perform this process at night and let it sit overnight.

Then you need to scrub the toilet to get rid of that limescale. Then you need to flush it so that the toilet is clean.


The cheapest way to remove the limescale from the toilet bowl is by using the Vinegar. You can use vinegar instead of a descaler if you don’t want to buy one.

It dissolves limescale by softening and dissolving the acid in vinegar. It is recommended that you drain the toilet bowl before using vinegar.

It is important to turn off the toilet’s water supply before scooping out the water. You should fill the empty bowl with vinegar and soak it for three hours. It is also possible to leave the mixture overnight.

Flush the toilet after cleaning the bowl. In case there are still limescale deposits, add more vinegar and allow it to sit for a few hours.

If the toilet needs to be cleaned, reopen the water supply valve. The easiest way to prevent limescale formation is to pour a liter of vinegar every couple of weeks and leave it in the toilet bowl overnight before you scrub and flush it.

If you want to keep limescale deposits from growing larger and harder to remove, you should remove them as soon as possible.


It is possible to buff limescale out with sandpaper. The best way to get rid of the worst deposits is to start with a vinegar treatment. You can then use a sanding block to remove the remaining limescale.

If you’re going to tackle the toilet, don’t forget to wear gloves. You should drain the toilet bowl, pour vinegar into it and let it sit for a few hours.

If any limescale remains, buff it off with medium-grain sandpaper.The bowl should then be polished with fine-grain sandpaper.

How to Remove Thick Limescale?

It is a good thing that there are so many different limescale removal solutions on the market, so you can find one that fits your specific condition.

It is possible that you will need to try another product if the first one doesn’t work. To ensure that the product reaches all the layers of that thick limescale buildup, repeat the process a couple of times with the same product.

You should empty the toilet bowl before you use a limescale remover, if you wish to get rid of those stains below the waterline. A diluted product will give less impressive results.

It is necessary to turn off the water supply before draining the toilet. You should flush your toilet to empty the tank, then fill a large bucket with water.

The water will drain away most of the way in the toilet bowl. You can then clean up the leftovers with a sponge or towel.

You can use the scale remover more effectively if your toilet bowl is dry, so wipe your bowl clean after scrubbing it a bit with your usual toilet cleaner to remove all non-limescale stains.

Frequently Asked Problems

What are the natural ways to remove the limescale from the toilet bowl below the waterline?

Using Vinegar and baking soda are the natural ways to remove it. Apply more than once if the strains are thick and stubborn.

Is there any fast way to  remove the Limescale from the toilet?

Applying the Acid is the fast way to remove the soft and thick limescale from the toilet. It barely takes few minutes to remove all limescale from toilet.

Wrapping Out

Using these steps, you will be able to remove limescale from your toilet quickly and easily. It will depend on how much limescale is present on the toilet when it comes to removing limescale below the waterline. You might be able to remove limescale from your toilet bowl with a good scrub and vinegar.

The use of stronger products as well as multiple cleanings may be needed to remove limescale stains that are particularly stubborn. It is best to prevent another buildup by maintaining your system regularly once you have eliminated it. You can comment below for a consultant if your problem is different. Read Also.

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