Demineralized Water Vs Distilled Water Knowing The Difference

Although, when it comes to demineralized water vs distilled water, you may have wondered about essential minerals levels.

Distilled and demineralized waters are both made with different processes.

While demineralized water (all mineral ions have been purified from water) is pure, distilled water is purified by distillation.

This introduction may be a little technical and may not address your questions.

Don’t worry! I will explain everything in detail, including their uses and manufacturing process.

Demineralized water vs distilled water

We will differentiate Demineralized water and distilled water based on various facts:

1. Definition

Demineralized Water

The demineralized water process can be a cheaper way for water filtration.

It simply means water that has gone through a process to remove dissolved minerals that may cause a salty water taste.    

This water is ideal for applications requiring filtered water with low salt content and conductivity.

It may be better for your primary drinking source. So you can use it after remineralizing the water.

Distilled Water

It is a process that heats to the point of boiling water. Then, steam is extracted from it and cooled to create distilled water.

This method of purification is the most common and produces very pure water.

2. Making Process

How to make Demineralized water

Membrane filtration:- Several steps ensure the best ultrapure water quality as spring water. This case uses a reverse osmosis system to make alkaline water. The advantage is that you can make the demi RO water without chemicals, except perhaps for cleaning. However, the downside is the high amount of (electrical energy) consumed.

RO can removal of TDS and make Demineralized water

Ion exchange:- In positive Ion exchange resins, Hydroxide ions replace negative ions, while hydrogen ions replace positive ions. It produces clean, healthy deionized water for your home.

An example of an ion exchange process is “water softening,” which reduces calcium and magnesium content and produces high-quality di water.

Electro-Deionization:- There is also an Ion exchange process: An electric current passes through the resins to keep it regenerated. The unwanted mineral ions remove from the reaction surface to the electrodes and produce deionized water (di water).

How to make drinking distilled water

Distillation Units

A distillation device, also called a still, is made up of a boiling room in which water is heated, then evaporated. Condensing chambers.

And then cool down to convert back into liquid water, and a storage tank to store purified water.

Distillation units are point-of-use (POU) systems. They are usually located at the kitchen tap and give clean water for cooking and drinking.

The amount of purified water they produce will depend on the size. The production rates vary from 3 to 11 Gallons per day. 

You can place home stills on the counter, floor, or attached to the wall. Modells can be fully, partially, or manually automated.

Some units include columns or volatile gas vents that remove organic chemicals with a lower boiling point than boiling water. It ensures uncontaminated di water.

3. In giving up contaminants


The process of demineralizing water involves passing water through specially-made resins.  

The positive ion exchange resin has the chemical composition for water purification.

While DM water is almost free of minerals and other substances, it could have tiny amounts of minerals that could remain.

The technology demineralizes water to ensure that the final product is high quality.


This process removes bacteria, organic and inorganic particles, viruses, minerals, and other contaminants.

After this process is complete, the water is stored in a sterilized container. The distillation removes metals, salt ions, dissolved solids, and minerals.

Because these compounds have a lower boiling temperature than water, volatile organic compounds (and gases) can make it through the distillation process. 

Manufacturers often add an extra water filter to remove any remaining compounds or gases.

Suggested Post:-

  • ·         10 Best Alkaline Water Pitchers 2022
  • ·      11 Ways to Treat Hard Water
  • ·      Why My Water Smells Like Chlorine

4. Usages

Demineralized Water Vs Distilled Water  usages

Demineralized water uses

This water treatment can be used for scientific and industrial purposes. Here are some examples of applications:

  • Useful for the pharmaceutical process.
  • Microelectronics and all other processes that require ultrapure water.
  • Automotive uses, e.g., Cooling systems and lead-acid batteries
  • Feeding high-pressure boilers.
  • Wash water in the manufacturing of computer chips.
  • It is best for medical facilities and technical laboratories.
  • Carwash
  • Cosmetics
  • Aquariums
  • Fire extinguishers
  • Boiler feed
  • Laser cutting
  • Optimization for fuel cells
  • Steam rising and steam ironing

Distilled water Usage

Let’s now move to what you are most interested in, which is distilled water.

These are just a few examples.

  • Watering:- Your plants will be grateful that the distilled water is so close to the rainwater
  • Drinking:- Drinking distilled water is safe for babies and humans. Be aware that only some water types are suitable for drinking. I am not a doctor, but I did read that some were.
  • Perfect ice cubes:- It seems that ice cubes made with distilled water are transparent. You can try it out to impress your friends.
  • Medical field:- Hospitals and clinics use distilled water to prevent the spread of bacteria.
  • Ironing:- To avoid scaling buildup and prolong the steam plant’s life expectancy, it is a good idea to use distilled water.

Many uses distilled water in many other areas, but this is a good overview.

5. Health Risks

Health risks of dematerialized water

According to WHO some health risks of drinking DM water are based on observational and experimental data.

Experiments were conducted on laboratory animals and volunteers. Data have also been collected from individuals who have consumed reverse osmosis water and infants who have received distilled water.

We need to consider epidemiological studies comparing the health effects of people who drink low-mineral and higher-mineral water (soft) and higher-mineral (hard) water.

  • Prepared food may cause a loss of calcium, magnesium, or other essential elements.
  • Increased dietary intake of toxic metals could be possible.
  • Low intake of microelements and other essential elements.
  • Directly affecting the digestive mucous membrane, metabolism, mineral homeostasis, and other body functions.
  • Low-mineral water has very little or no calcium and magnesium intake. Below are some examples of possible negative consequences of filtered water with low mineral content:

Health risks of distilled water

Distilled water is the purest water, but it doesn’t necessarily make you healthier.

Water filtration is very efficient at removing potentially harmful contaminants. However, it also removes natural minerals and electrolytes in water.

The distillation process removes 99.9% of the dissolved minerals in tap water.

Water isn’t usually considered a source of minerals. However, any factor that reduces your intake of essential micronutrients can harm your health.

  • According to studies, there is an association between low levels of magnesium and calcium in drinking water and fatigue, muscle cramps, weakness, and heart disease.
  • You may also find that distilled water is not as hydrating as other water types.
  • Distillation water treatment can remove fluoride from drinking water. It may increase the chance of cavities in those who drink distilled water. It is important to ensure proper dental hygiene for anyone who drinks distilled water.
  • Drinking water low in magnesium and calcium has increased fracture risk, preterm birth, and heart disease (17Trusted Source, 18Trusted Source).
  • Distilled water lacks Electrolytes like Potassium and other minerals your body requires.

It is important to remember that tap water isn’t an essential supply of minerals; for most people drinking distilled water can be considered safe as long as a well-balanced diet.

6. Operational costs

Affordable water

Deionized water plants are more economical than distillation for most industrial applications. 

It can be costly because distillation is expensive to heat, circulate, cool, and maintain large amounts of water for industrial production.

Although innovations like multiple-effect distillation systems and vapor compression have allowed for greater energy efficiency in the last decade. They are still very expensive to operate compared to other water purification methods.

Operating costs for a deionization system are typically very low. It requires very little energy. Usually, power pumps circulate the water and chemical costs to regenerate the resin.


Can you drink demineralized water?

Water is essential for all living organisms, including plants, animals, and humans.

It is also considered an important source of essential nutrients for living organisms. Purification of water is important to remove all harmful impurities.

Although demineralized and distilled water are the purest forms of water, They are not a good choice for drinking because they don’t contain any essential minerals.

To demineralize or distill water, you can make distilled water by adding all the essential minerals required for living organisms.

Although, when it comes to demineralized water vs. distilled water, both have low essential mineral levels.

So, both are not suitable for regular drinking purposes. Still, adding all necessary minerals, like bottled water, can be made more useful.

What is the demineralized water ph value?

Demi water has a pH value of 7.0 but is slightly acidic. The reason is that the carbon dioxide in the water dissolves from the atmosphere until it reaches dynamic equilibrium.

Carbonic acid forms when dissolved carbon dioxide reacts to water.

H2O + CO2 – H2CO3 (carbonic acid)

Only fresh and clean water can have a neutral pH value of 7.0. However, suppose they are left for a while. In that case, carbon dioxide will be captured from the atmosphere, making them slightly acidic.

It will allow the pH value to be as low as 5.5.

Further explained in this video:

Demineralized water vs purified water

1. Demineralized water

Demineralization refers to the process of removing certain minerals from feed water. Water in its natural state is full of impurities and minerals, making it unsuitable for machine use. It is impure water, also known as hard water.

In the ion exchange process, hydrogen ions replace positive ions while Hydroxide ions replace negative ions.

At the same time, the cation-exchange resin removes minerals and salt ions that have a negative charge. 

It removes impurities that cause hard water and makes it soft. The soft water is perfect to create steam in boilers and feed other purification facilities.

2. Purified water

Purified water is purer than demineralized water. You get it by passing demi water through another process of purification. 

Reverse Osmosis and UV light purification are two methods that can further purify water. Soft water flows through an RO water membrane’s fine filters.

The reverse osmosis system removes all impurities including lead, chlorine, or bleach smell, and produces pure water quality. 

The fine water filter can also remove microbial contamination and dissolved solids from water.

Pharmaceutical manufacturing units use purified water to produce injection water or WFI (water for injection).

It is high-purity bottled water used to formulate parenteral (injectable drugs).


You may now be aware of the distinction between demineralized and distilled water.

When it comes to demineralized water vs. distilled water, both are very pure.

You can identify which one is perfect for your use and how it produces at how much cost.

Leave a Comment