You may have experienced your toilet water not coming down when you flush. This incident often happens when there is a calcium buildup. If you aren't familiar with this issue, keep reading below to learn more.

What Is Calcium Buildup?

Calcium buildup in toilets is a very common problem. It is caused by hard water, which is water that contains high levels of minerals such as calcium and magnesium. When hard water is used to flush a toilet, the minerals are left behind and can build up over time. This can make it difficult to flush the toilet and can cause the bowl to become stained.

What Are the Common Causes of Calcium Buildup?

Calcium buildup in toilets is a common problem caused by various factors. The most common cause of calcium buildup is hard water. Hard water contains high levels of minerals, such as calcium and magnesium. When hard water is used to flush a toilet, the minerals can deposit on the surfaces of the toilet bowl and create a hard, white buildup.

Calcium buildup can also be caused by cleaning products containing calcium carbonate. These products can leave behind a residue that eventually hardens and causes a buildup. Another common cause of calcium buildup is using a toilet brush to clean the bowl. The bristles of the brush can scratch the bowl's surface and leave behind calcium deposits.

How to Get Rid of Calcium Buildup?

You can do a few simple things to remove calcium buildup from your toilet bowl. Vinegar is a natural acid that can dissolve calcium deposits. You can pour vinegar into the toilet bowl and let it sit for a few hours before scrubbing with a toilet brush.

If vinegar doesn't work, you can try a commercial toilet cleaner that contains acid. Be sure to follow the directions on the product label.

You can also try a pumice stone to remove calcium deposits. Wet the pumice stone and rub it over the calcium deposits. Be careful when using a pumice stone, as it can scratch the porcelain on your toilet bowl.

If you have a serious calcium buildup problem, you may need to call a plumber to have the toilet professionally cleaned.

How to Prevent Calcium Buildup?

You can take a few simple steps to prevent calcium buildup in your toilet. First, make sure you are using the right type of cleaner. Avoid cleaners that contain acids or harsh chemicals, as these can damage the porcelain and lead to calcium buildup. Instead, opt for a mild, phosphate-free cleaner.

Second, clean your toilet regularly. Even if you are using the right cleaner, calcium buildup can still occur if the toilet is not cleaned regularly. Be sure to brush all surfaces of the toilet, including under the rim, to remove any dirt or debris.

Finally, use a soft toilet brush. A brush with nylon or soft bristles will be gentle on the porcelain and will not damage the surface. Avoid using a wire brush, as this can scratch the toilet and cause calcium buildup. By following these simple tips, you can prevent calcium buildup in your toilet and keep it looking clean and new.


Calcium buildup in toilets is a common problem caused by several factors. Hard water, mineral deposits, and even rust can contribute to calcium deposits in your toilet. While these deposits may not seem like a big deal, they can cause a number of problems. It is important to deal with the issue immediately and to take preventive measures to avoid it repeating.

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