How To Remove Hard Water Stains From Bathtubs

Hard water stains often settle in bath tubs as the tubs become old and as water set in long in tubs the stain sets in. It is very important to remove them as it may make your tub look messy and old which you really do not want. There are many methods of removing such stains depending on different types of tubs. However, the key to removing stain is to treat it as soon as you see even a drop hard water stain on your tub. You can adopt anyone of the following methods depending upon the type of Bathtub to remove Hard Water Stains.

Method 1 (For Acrylic Bathtubs)

As Acrylic Tubs have a non-porous surface. No porous surface prevents the dirt to penetrate deep. However if care is not taken and the tub is not washed regularly stains can become immense. Abrasive cleaners should not be used to remove hard water stains from acrylic surface as it can damage it.Moreover in case of Acrylic Surface do not use abrasive material like Pumice Stone or Scouring Pad which can be used in case of Enamel Surface. You can adopt the following method.

Things you will be required:

·      One cup of ammonia.
·      Half cup of vinegar.
·      One forth cup of baking soda.
·      One gallon of warm water.
·      Elbow grease.
·      One piece of cloth.


1.   First you have to make a solution that you can apply on the bath tub. To make a solution you need one cup of ammonia, half cup of vinegar, one fourth of baking soda. Mix all of them with one gallon of warm water. Stir the mixture well.

2.   Then dip a piece of cloth in the mixture and apply it on the tub and then for rubbing use elbow grease on the stain.

3.   Finally, the hard water stains will be removed from your Acrylic Bathtub.

Method 2 (For Porcelain Bathtubs)

This material is hard (stone like) and one of the most durable materials. So we can use tough materials to clean it like Pumice Stone and Scouring Pad.  Rub it either with Pumice stone or Scouring Pad.  Alternatively an abrasive paste can be used. Procedure to apply Abrasive Paste is as follows.

Things you will be required:

·      Bring it on water spot removal.
·      Paper towels.


1.   For porcelain tubs you have to purchase a very famous product known as Bring it on water spot removal. It is a paste that you can apply on the tub area for at least twenty to thirty minutes maximum.

2.   Then take off the paste with the help of paper towels and then give a regular wash to the tub.

3.   There will be no further hard water stains in your Porcelain Bathtub.

Method 3 (For Enamel Bathtubs)

Porcelain Material is sensitive to bleach so does not apply it in any case. You can you use the following method.

Things you will be required:

·      One teaspoon of liquid dish washing soap.
·      One quarter of hot water.
·      Sponge.
·      One large bowl.
·      One cup of baking soda.
·      Cream of tartar.
·      Some hydrogen peroxide.


1.   First, pour one teaspoon of liquid dish washing soap into one quarter of water. Stir in such a way that you are able to generate suds.

2.   Then sponge that soapy water on the surface of the tub covering the entire stain area making sure you move the sponge in circular motions. Then rinse the tub with warm water making sure you wash the soap away.

3.   Then place one cup of baking soda in one large bowl and add warm water to make a thick and creamy paste. With the help of the sponge apply that paste over the stain area allowing it to set in for ten to fifteen minutes and then wash it away.

4.   The remaining stain should be treated with cream tartar and three percent of hydrogen peroxide. You have to add both in a bowl and make a paste that you can apply on the stain area. The paste should be scrubbed and then eventually rinsed, once there is no more Hard Water stains on your Enamel Bathtub.

Method 4 (For Wooden Bathtubs)

Things you will be required:

·      Hard water stain remover.
·      Vinegar.
·      Sponge.


1.   First give a normal wash to your bathtub, so that you can get rid of any dust particles and other stains that can be removed with a normal wash.

2.   Then add some vinegar on the stain and allow it to set in for at least thirty minutes, in the mean while you may do other household chores.

3.   After thirty minutes you may wash the vinegar away and apply or spray some hard water stain remover for ten minutes and then scrub it with a sponge.

4.   Give a normal wash to your Bathtub and you will be free of any stains.

Tips and Warnings:

1.   In method one abrasive cleaner should not be used as it can cause scratches which may further destroy the stains.

2.   Use gloves when making paste, scrubbing or when applying the solution on the stain area.

3.   Use stain removers of well-known brand that have been tried and tested by many people so that you stain can be removed permanently and effectively.

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Unknown said...

This would be for mild hard water. What about hard water scale? at least 1 ml thick? On an acrylic tub?

Unknown said...

This would be for mild hard water. What about hard water scale? at least 1 ml thick? On an acrylic tub?

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