Difference Between Tap Water And Distilled Water

Tap water and distilled water are two of the most common types of drinking water. While they contain the same kinds of minerals, such as calcium and sodium, their composition differs in several ways.

Tap water contains minerals, proteins, bacteria, and other substances which give it its taste and smell. It is filtered from the source to remove contaminants and pollutants. Distilled water has been boiled, vaporized, and condensed into liquid form. In the distillation process, almost all contaminants and impurities are removed. This makes it a much purer form of water than tap water. 

What Is Tap Water?

Tap water is the water that comes from a public water supply system. It typically contains minerals like calcium, magnesium, and other organic or inorganic compounds. The quality of tap water varies from place to place, depending on its composition at the source and how it is treated before reaching our homes.

What Is Distilled Water?

Distilled water is a type of purified water with impurities and minerals removed. Unlike tap water which typically contains small amounts of calcium, magnesium, chlorine, and other minerals, distilled water is free from contaminants or added chemicals. This makes it ideal for use in processes like steam-cleaning clothes, filling car batteries and aquariums, and other industrial uses. It can also be used for drinking water when added minerals are not desired or needed. Many people who drink distilled water find it has a clean, crisp taste since no chlorine is present. Additionally, distilled water contains no pollutants or contaminants that can sometimes be found in tap water.

What Is The Difference Between Tap Water And Distilled Water?

  • Impurities: Tap water contains minerals and other impurities that can affect its taste, odor, and appearance. On the other hand, distilled water is free of contaminants as it goes through a distillation process to remove all impurities.
  • Composition: Tap water and distilled water have very different compositions. Tap water typically contains minerals, chlorine, and other materials that are purposely added to make it safe for drinking. Distilled water, on the other hand, is made by boiling tap water and condensing the steam back into liquid form. This process removes most (if not all) of the impurities in tap water, resulting in water that is almost entirely composed of just hydrogen and oxygen molecules (H2O).
  • Production: Tap water is produced from surface sources such as rivers, lakes, and reservoirs. The water goes through treatment processes at a municipal plant before it’s distributed to homes in the area. On the other hand, distilled water is created by boiling tap water and collecting its steam or vapor in a separate container.
  • Drinking: Tap water is suitable for drinking, cooking, and cleaning without additional filtration. It contains various minerals and other substances that can improve taste and provide health benefits. On the other hand, distilled water is not recommended for drinking due to its lack of essential minerals and nutrients. However, it may be used as an alternative to tap water for specific applications, such as cleaning or preparing certain types of food.
  • Uses: Tap water is most commonly used for drinking, cooking, and other everyday activities. It can also be used to water plants in the garden, fill up fish tanks, or provide drinking water for pets. Tap water typically contains a small amount of dissolved minerals and salts, which give it a unique taste. Distilled water is free from any chemicals, minerals, or other impurities and is often used in medical settings and for industrial purposes where extremely pure water is required. It can also be used in humidifiers to prevent the buildup of mineral deposits.
  • Treatment process: There is a 4-Step treatment process for tap water. Coagulation and Flocculation, Sedimentation, Filtration, Disinfection. The distilled water is boiled at 100 degrees centigrade. Evaporation and Condensation are also included in distillation.
  • Risks: Tap water can create water born diseases like Cholera and Thyroid. Distilled water can cause mineral deficiencies.
  • Benefits: Tap water provides natural minerals like Magnesium, Calcium, and Potassium). At the same time, distilled water provides clean, pure, containment-free drinking water.

How Is Tap Water Converted Into Distilled Water?

Distilled water is tap water heated to create steam and cooled back into liquid form. The distillation process involves boiling the tap water and collecting the vapor in a separate container, leaving most contaminants behind. As the steam condenses back into liquid form, it is a purer form of water than what was used initially. This process can be repeated multiple times to create even higher-quality distilled water.


Is it safe to drink double distilled water for a long time?

Yes, drinking double-distilled water is safe for long-term consumption. The high level of purification removes most contaminants, including minerals and other impurities that can accumulate in the body over time.

Can you be electrocuted with distilled water as you can with tap water?

No, you cannot be electrocuted with distilled water as you can with tap water. The reason is that distilled water does not conduct electricity like tap water.

Is sterile water the same as distilled water?

No, sterile water is not the same as distilled water. Sterile water is made by boiling or other means to eliminate living organisms and contaminants. In contrast, distilled water goes through a process of distillation in which it evaporates into steam and then re-condenses back into liquid form.

Is bottled water healthier than tap water?

It depends on what you are looking for in water quality. Tap water is typically regulated by governments and must meet specific standards. On the other hand, bottled water can be regulated or unregulated depending on where it comes from.

Can liquids other than water be distilled?

Yes, it is possible to distill other liquids. However, distilled water is the most common type of distilled liquid.


Difference Between Tap Water And Distilled Water - infographic
Difference Between Tap Water And Distilled Water – infographic

Tap water is usually the better choice for everyday drinking since it contains beneficial minerals that aid bodily hydration. Distilled water, however, may be a better option for specific specialized tasks such as car battery recharging or medical applications when purer H2O is necessary. It is essential to consider your needs and tap water quality when choosing between tap and distilled water. The best option for you may depend on the situation and your expectations.

Leave a Comment