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5+ Ways To Prevent Hard Water Stain From The Toilet

Not long ago, I visited a friend to have lunch with the family. I needed to use the guest toilet at one point and I could visibly see my friend become uncomfortable for a minute. It was after I used the guest’s toilet I understood why she felt uncomfortable for a minute. The guest toilet has stains on it. 

It can be embarrassing for a house owner to deal with toilet stains. This is because a guest can translate that to mean that the home is generally dirty or some other assumptions. If you are dealing with a similar situation, this article is for you. 

In this article, after reading this article, you will understand what causes hard water stains in the toilet. Also, you will know how to prevent and remove those stains and many more.  

What Causes Hard Water Stain In The Toilet?

Hard water is any water with excess minerals like calcium and magnesium. These minerals can be collected as it passes in and around the soil and rocks. 

As you continue to use your toilet, hard water gradually builds up, leaving a stain and rust in the toilet. And these stains seem to be impossible to remove. It’s all-natural for those living areas prone to hard water, this means that your toilet and other facilities are prone to stain as a result of the presence of calcium and magnesium in the water.

Problems Caused By Hard Water

Now you know what hard water is and what causes it, what are some of the problems hard water can cause.

a. The buildup of scale in your plumbing fixtures

This happens as a result of hard water, it builds up in your pipes, over time these scales can restrict water flow through the pipes. As these scale buildup, it will eventually block your pipes completely.

b. Stained bathtubs and toilet

The calcium and magnesium contained in the water will begin to stick to your toilet and bathtub causing a brownish stain on them. This stain can be very much easy to clean off at first, but if allowed to build up will be hard to clean off.

c. Frequent Repair Of Plumbing Fixtures

If your plumbing materials are steel, the buildup of calcium and magnesium will cause corrosion over time, resulting in damage to the pipe. 

Hard water can cause a lot of other negative effects like fading of clothes, dry skin, and hair, damage to appliances that use water like dishwashers, washing machines, etc.

In this article, we are looking at the effect of hard water on the toilet, how to remove hard water stains and how to prevent it.

How To Prevent Hard Water Stain In The Toilet

It is easier to take steps to prevent hard water stain in your toilet than to remove the stain. These are some of the steps you can take to prevent hard water stains in your toilet.

a. Clean Your Toilet Frequently 

We all knew that prevention is better than looking for solutions. When you notice that you live in an area prone to hard water you will have to make it a custom to clean your toilet at least once a week. 

 Hard water stains get worse over time when more and more minerals dry and accumulate on the toilet. 

 The longer the stain stays the harder it will become to clean. So you have to make preventive cleaning part of your routine.

 b. Making Use of Vinegar 

Cleaning your toilet once or twice a month with vinegar and baking soda will go a long way in keeping your toilet clean and shiny. Ready more about how to use vinegar for toilet cleaning HowStuffWorks

 b. Install a Water Softener 

The use of a water softener like lime will precipitate calcium as carbonate and magnesium as hydroxide. This keeps the toilet clean always. Or you can install one for the whole house at the water supply, the device uses a resin that will neutralize calcium and magnesium by a process called ion exchange. 

 c. Install a Water Conditioner.

What the salt-free water conditioner does is that it prevents limescale from forming in your plumbing. It will also remove additional chemicals like chlorine from your water.

 d. Keep surfaces dry 

One of the best ways to prevent hard water stains is to keep the toilet surface dry after use. This includes the toilet floor. If you are sharing your toilet and bathroom in the same place, use a squeegee to remove water drops from the walls and doors.

 e. Install a Water Filtration System.

Installation of a water purification system at your home water source can help eliminate hard water and leave the water running to your home fresh and soft.

How You Can Remove Hard Water Stain From The Toilet

So you have seen the stain and are very worried about how to remove it? Removing the stain doesn’t have to be that stressful because the material you will need many of them can be found right there in your kitchen.

Option one: Baking Soda and Vinegar

When it has to do with anything ceramics this combination is always the first choice because they both work great in stain removal.


  • VinegarĀ 
  • Baking Soda
  • Measuring Cup
  • Toilet Brush

a. First, flush out your toilet if there is any dirt water sitting inside. Then pour about a cup of vinegar inside the toilet and mix it up with the standing water. Let it sit there for about one to 4 minutes.

 b. Pour a cup of baking soda inside the toilet, then pour an extra one to two cups of vinegar. This will cause a bubbling reaction. Let it sit for about 10 minutes.

 c. With the toilet brush swish the solution around the toilet bowl and scrub the area affected by the hard water stain. Also, scrub inside the bowl all over.

 d. After the scrub, don’t flush the toilet, let the solution sit for about 20 to 30 minutes more while scrubbing a few more times with the brush. Do this until the stain is completely gone.

 e. After 30 minutes flush the toilet to rinse

 f. Depending on how stubborn the stain is, you might want to consider some other options like borax, or sandpaper.

But if the stain happens to be stubborn you can use the extra process below to remove it.

Option two: Borax and Vinegar

Borax is a very good cleaning agent that can be used to clean hard water stains in the toilet and other plumbing fixtures.


  • Vinegar
  • Borax
  • Measuring Cup
  • Toilet Brush

a. Pour 1/4 cup of borax into the toilet and swish with a toilet brush.

b. Pour 1 cup of vinegar, and allow to sit there for about 20 to 25 minutes.

 c. Use the toilet brush to scrub the bowl.

 d. Rinse off the toilet.

Option three: The Use Of Chemicals

Chemicals like phosphoric acid, hydrochloric acid, and sulfuric acid, are chemicals that are very strong and corrosive. Many companies that are into professional cleaning services use these chemicals to scour out stubborn hard water stains.

When using these chemicals ensure to put on gloves and protection glasses to avoid the harshness of the acids. When removing stains with chemicals, it’s necessary to remove the sitting water inside the bowl with a plunge.


Hard water stains can be annoying, everyone feels happy using a clean bathroom and toilet. With the above steps, you can remove hard water stains and prevent them from happening again. If you can’t do it yourself you can employ the services of a professional to do it for you.