Can you check the water hardness at home?

Laboratoryjne badanie wody

Water hardness is a measure that determines the amount of calcium and magnesium in water. These minerals, while not harmful to health, can cause a number of problems, such as the formation of deposits on household appliances, reducing the effectiveness of soap and shampoo, and contributing to the formation of scale in the water system. Different regions have different levels of water hardness, depending on the geology and water sources.

Determining water hardness is usually done in a laboratory, but many people wonder if there is a way to test water hardness at home. In this article, we will discuss the different methods of testing water hardness and consider whether there is an effective home way to perform this test.

Home methods for testing water hardness

Some suggest that there are simple home methods to test water hardness, such as the soap test. This test involves adding a few drops of clean, unscented soap to a glass of water and shaking it vigorously. If the water becomes profuse foam, it is soft. If little foam is produced, the water is hard.

While this test can give some indication of water hardness, it is too imprecise to be used as a reliable tool for measuring water hardness. There is no way to define exactly how many hardness components there are, nor what its exact value is.

Professional water hardness testers

When it comes to accurate water hardness measurements, the best option is to use a specialized water hardness tester. These testers, such as drip testers, are available for purchase and can provide precise water hardness measurements in units of soft or hard degrees.

The drop test is an extremely precise tool that provides results down to a single hardness unit. It works by adding a certain number of drops to a water sample; each drop corresponds to one degree of hardness.

Checking the hardness with the water supplier

For those who use tap water, one of the easiest ways to determine water hardness is to contact your local water company. Most public water suppliers regularly monitor water quality and can provide information on water hardness.

Some water utilities also post this information on their websites, making it easy to check the hardness of your water.


While there are some home methods for testing water hardness, these methods are usually imprecise and cannot provide accurate results. For those who want precise information on the hardness of their water, purchasing a professional water hardness tester, such as a drip tester, is the most effective option.

People using tap water can also consult their local water supplier for information on water hardness. While this information may not be as precise as the results from a drip tester, it can provide a general idea of water hardness.

See also:

Have a question? Write!

13 + 2=

Don't know what to choose? call!

So many water softeners on the market that you don't know what to choose? You do not want to overpay for expensive advertising campaigns for water softeners, but at the same time you are looking for an effective solution? I am here to help you! I will find matching equipment for your needs.

Phone: (+48) 532 916 941