Demineralized Water Vs Distilled Water: Know The Difference

Demineralized Water Vs Distilled Water

Demineralized Water Vs Distilled Water

.Both distilled water and demineralized water refer to purified water with comparable applications. It’s no surprise, then, that the two are frequently mixed or mistaken for one another. It’s an incorrect assumption, as distilled and demineralized water has numerous differences in qualities.

The main variations between the two are the purification methods, which cause inconsistencies. It means that neither should be an alternative for the other. In this article, we’ll look at the qualities that set these two substances apart.

Demineralised Water

As the name implies, demineralized water (also known as purified water) has had its minerals removed. Calcium, chloride, sulfate, magnesium, and sodium (salt) are common minerals extracted using ion-exchange, electro-deionization, or membrane filtration. These procedures target magnetically charged ions, leaving viruses, bacteria, and other physical pollutants behind as part of the purification process.

There are a variety of applications that necessitate the use of demineralized water to avoid mineral harm. Laboratory work, automobile systems, pharmaceutical manufacture, electronics, and domestic appliances such as steam irons are just a few examples1.

Humans should not consume demineralized water. Although the water itself is harmless, the minerals contained in distilled or other types of drinking water are essential nutrients for our health.

Distilled Water

Water that has been cooked into steam and then condensed back into liquid is known as distilled water. This technique removes minerals from water in the same way as demineralized water does. Still, it also eliminates molecules like viruses, bacteria, and other contaminants because it doesn’t target magnetically charged ions. As a result, while distilled water is purer than demineralized water, humans should still avoid it due to its lack of important nutrients.

The lack of minerals in distilled water, like demineralized water, makes it beneficial in various industries, including pharmaceuticals, cosmetics, electronics, food, and beverage processing, power, and many more.

benchtop water filter system label

Demineralized Water Vs. Distilled Water

Demineralized water is a type of purified water that eliminates the majority of its mineral and salt ions. Calcium, Magnesium, Sulphate, Chloride, and Sodium are just a few examples. It refers to as deionized water or demi water. Demineralized water differs from distilled water in several ways. Boiling and re-condensing distilled water purify it. It eliminates salt ions in this manner.

The main difference between demineralized and distilled water is that distilled water often has fewer organic pollutants. In contrast, deionisation does not remove uncharged molecules like viruses or bacteria. The amount of mineral ions in demineralised water varies depending on its creation. Deionization produces cleaner water and leaves less scale in the installations.

The material of your instruments should be taken into consideration when using this demineralized water. Not all materials are suitable for use as demi-water pipework. It depends on the temperatures employed.

What Is Their Difference?

Distilled and demineralized water uses distinct purification procedures, and so provides different results. Demineralized water removes minerals, leaving only H2O. The issue with demineralization is that it does not remove bacteria or viruses in the same way that distillation does. Distillation is a highly effective method for removing pollutants, removing 99.9% of them.

Simply put, demineralization does not remove suspended particles, organic compounds, germs, viruses, or physical contaminants as effectively as distillation does. Therefore, distillation is a far more efficient method of water purification.

Many manufacturers now put the water through both purification procedures to ensure that you get the purest water available. It’s because the demineralization procedure removes any trace elements that escaped the distillation process.


Demineralized and distilled water have a lot in common. Since they’re both purified, their lack of pollutants makes them excellent for use in steam irons, aquariums, and as a solvent for solution preparation. They do, however, have some similar applications. Without knowing their reactions, You should not switch them interchangeably.

Why Is Demineralized Water Not Advisable To Drink?

You’d expect demineralized water to filter minerals through (electro) ion exchange, distillation, membrane filtering, or other processes. So, you might use it as drinking water. However, there are benefits and drawbacks to drinking demineralized water, as with everything else. The advantage is that it removes the minerals that are harmful to our health.

There’s a lot of evidence about the negative effects of specific minerals on our bodies. The major problem of consuming demineralized water is that it removes the good minerals from our bodies. It causes a deficiency in which our health system cannot work properly. In conclusion, demi-water should not be utilized as a source of drinking water since it removes minerals necessary for optimum health.

Industry and science use demineralized water. The following are some examples of possible applications:

  • Laboratory applications and testing
  • Laser cutting
  • Carwash
  • Wash water for computer chip manufacture
  • Boiler feed
  • Automotive uses, e.g., lead-acid batteries and cooling systems
  • Cosmetics
  • Pharmaceutical manufacturing
  • Optimization of fuel cells
  • Fire extinguisher
  • Steam irons and steam raising applications
  • Aquariums


When it comes to choosing safer drinking water between demineralized water vs. distilled water, we’ll say distilled water. The elements left over after purification are the fundamental differences between filtered and demineralized water. Distilled water is made by boiling and condensing the water to remove minerals and other contaminants, including bacteria, viruses, and organic matter. Some commonly use ion-based methods to produce demineralized water, which eliminates minerals but leaves other pollutants behind.