How To Test Water Hardness

This article contains affiliate links. When you make a purchase, we may receive a small commission without any additional cost to you. Read more

Hard water is a problem because it can be so hard on your skin and hair and because it can clog pipes and cause mineral buildup in fixtures like sinks, faucets, toilets, and showers.

How To Test Water Hardness

The best way to deal with this issue is to test the hardness of your water at home before doing anything else. This will help you determine if there are any problems that need to be addressed by professionals or if you can get away with some DIY solutions.

Knowing how hard your local tap water is lets you know which products are worth buying for softening or filtration purposes.

There are many different methods you can use to test the hardness of your water at home without spending too much money on expensive testing kits that might not even work properly. We have found 5 simple ways you can check out the hardness of your tap water right away!

What is water hardness?

Water hardness refers to the concentration of dissolved minerals. The most common minerals in water that raise the hardness levels are calcium and magnesium carbonates. It is not difficult for people to determine if they have high water hardness or not. There are many simple tests that can easily determine water hardness. We will later discuss some methods in this article.

How to test water hardness – 5 Methods

We have selected five methods to test your water hardness. Each method has its advantages and disadvantages. Let’s take a look at the testing methods available.

  1. Test water hardness with soap

Just add some pure liquid soap to a bottle and add water. Shake the bottle for 10-15 seconds. If some soap bubbles are very less and the mixture just turned into milk-like consistency, then the water hardness level is high. But if some soap bubbles are very much and the mixture formed a dense consistent foam, then the water hardness level is low.

  1. Test water hardness with litmus paper

Another way to test your water hardness is by using litmus paper. This is kind of interesting because you can actually see your water’s hardness level with this method.

Just place a 5cm x 5cm piece of litmus paper into your water for about 30 minutes, and the paper will then become pink if your water is hard. If your water is soft, the litmus paper will turn blue. If the color does not change, then it can mean water is pure or neutral.

  1. Test water hardness by boiling the water

Another way to test water hardness is by boiling the water. For this, just fill an empty pot with pure water and start heating it on your stove or gas burner. Once the water starts boiling, close the burner and lets the water cool down for about 30 minutes. If your water is hard, it will create a white substance at the bottom of the cooled pot, and also, floating grains appear on top of the water. And if your water is soft, it won’t.

  1. Test water hardness with baking soda

This is another way to test water hardness. Place a spoonful of baking soda into the cup, and then add your water drop by drop. You need to stir the mixture with your finger or a wooden stick while adding each new drop of water. The baking soda will dissolve in the water instantly if your water is soft, but it will not dissolve completely when your water is hard. You can tell the hardness level of your water by the decree of dissolution.

  1. Test water hardness with a water hardness testing kit

If you are not familiar with the above methods but want a quick answer to your water hardness level, then The Water Hardness Test Kits from Amazon is an excellent option.  These kits are easy and fast to use and can test water hardness within 10 seconds. It comes with everything you will need to do a water hardness test in one small package.


How do you check water hardness without a kit?

If you don’t want to buy a water hardness testing kit, there are some easy ways that can help you check your water hardness. We have included some of the above that do not require any kit.

How much does a water hardness testing kit cost?

These kits are affordable and can range from $10 to $50 depending on the brand and the number of

Final Thoughts!

Water hardness is a simple and important aspect of water quality that can be tested without equipment or by using some basic equipment. The five methods we’ve outlined in this article are great ways to test your home or business for hard water.

We hope this article has been helpful to you in understanding the levels of water hardness and how it affects your health, skin, hair, clothes, and dishes.

If you have a question about anything related to our blog post, please let us know by leaving a comment below!

Jeremy Lee is a researcher and part-time blogger who has a passion to discover cutting-edge technologies related to water filtration. He knows the importance of purified water in our lives and started this blog aiming to provide the best product reviews, buying guides, and other useful information related to water. When not working, he loves to spend time with his beloved wife and two kids.