Distilled Water vs. Purified Water (Quick Guide)

Distilled Water vs. Purified Water, which one would you choose? well, in this article we’ll dissect the differences, similarities, and qualities of both distilled and purified waters. Hence, help you make an informed buying decision.Distilled Water vs. Purified Water

Summary: Distilled Water vs. Purified Water

The major difference between Distilled water vs. purified water lies in their purification process or processes applied during water treatment.

Both distilled water vs. purified water are great water choices and are some of the best water choices available. Both can quench your thirst allowing you to remain hydrated.

However, it is important to differentiate the two and make a more informed decision when choosing between the two.

Related: Is Distilled Water the Same as Filtered Water

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What Is Purified Water?

Purified water refers to water that has been processed or undergone mechanical filtration to eliminate impurities and make the water fit for use. You can classify Purified water by the amount or lack of pollutants in water.

To consider any water as purified water, the impurities should be at low levels. The impurity level in purified water must be below ten parts-per-million (PPM). Essentially, any water that achieves this threshold is of high purity than tap water, filtered water, and spring water.

The type of impurities removed during the purification process includes; fungi, algae, bacteria, parasites, chemical pollutants, and metals like lead; all these are harmful water pollutants.

Purified water passes through other additional purification processes such as deionization, reverse osmosis, sand filtration, and distillation. All these processes make the end product “purified water” to be of best quality than filtered water, spring water or even tap water.

You can obtain Purified water from a spring, tap, ground and surface water. This water is then passed through the purification process to remove all impurities. Thus, the quality of any water source does not determine the quality of the end water product.

In most countries, water is purified to make it safe for public consumption.  Such countries use various treatment methods like;


In this method, we’ve addition of various chemical disinfectants like chlorine or iodine into impure water to eliminate bacteria, viruses, and other impurities. Most of these impurities were not removed during the initial steps.

Coagulation and Flocculation

Application of these techniques happens before sedimentation and filtration to improve the effectiveness of the water treatment process to eliminate particle. Thus, introduction of positively charged chemicals into the water occurs. The positively charged particles bind to the negatively charged particles to form large floc and make it easy to filter the particles out.


In this step, particles in suspension  settle down through the effect of gravity. Those particle that settles down from the suspension is sediments. In water treatment, we refer to these particles as sludge.


In this process, clean water flows through the various filtration systems made using charcoal, gravel, and sand. This process eliminates contaminants like viruses, bacteria, and chemicals.

Benefits of Purified Water

Purified Water Lacks Pollutants or Contaminants

Purified water passes through a meticulous water treatment process which eradicates impurities present in the water. The approved level of purity for purified water is higher than in distilled or spring water. For any water to be classified as purified, the concentration of impurities must be below 10 parts per million. However, on rare occasion, purified water might have traces of microorganisms. Nevertheless, the treatment process of purified water ensures all pathogens and harmful chemicals are eradicated. Hence, you get clean and safe purified drinking water.

Retains Important Minerals

Purified water retains vital minerals like potassium, calcium, and magnesium. These micro nutrients are essential for the body as they aid in teeth and bone development and play a crucial role within the immune system. Lack of these vital micro nutrients may have a serious impact on the immune system of the human body as well as affect mental capacity.

Purified Water Tastes Great

The extensive water purification process removes all harmful microbes like viruses, bacteria, parasites, and chemicals. Thus, you get the most refreshing and pure taste drinking water. Water that has excellent taste encourages people to drink more, hence, eliminate many health issues as you remain hydrated all through.

Disadvantages of Purified Water

May Contain Pesticides

Pesticides can quickly get into your water well without your knowledge, especially if your well is near a farm that uses Pesticides. You need to have the water regularly tested for these contaminants. Home water filters are only good at eliminating chlorine or heavy metals like mercury, but it can be difficult for these filters to reduce pesticides in water. According to National Pesticide Information Center, exposing water to pesticides can increase the risk of getting cancer over the long-term.

Fluoride Mineral in Water

Some countries add Fluoride in drinking water to enhance dental health and lessen tooth decay. According to the national research council, application of fluoride in public drinking water in at-risk regions has reduced cases of tooth decay in children. However, excessive fluoride intake can be dangerous to the nerve cells and brain.

Furthermore, consuming large amounts of fluoride can cause learning, cognitive, and memory deficits.

Nevertheless, experts agree that the amount of fluoride in drinking water is ideal and aids in eliminating tooth decay in children. Therefore, those who consume purified water should know that some water purification systems eliminate fluoride.

Water Purification Systems Need Regular Maintenance 

Some homemade water purification systems may not be effective and might require regular maintenance to allow filtering out of harmful microorganisms and metals. Hence provide safe drinking water.

What Is Distilled Water?

Distilled water passes through the distillation process to eliminate impurities in water. Distillation encompasses boiling water into vapor and condensing it back into liquid form in a different container.

The distillation process is ideal at eliminating impurities and contaminants like viruses, bacteria, protozoa, and chemicals like sulfate and lead.

Since distilled water has high level of purity and has no contaminants, it’s used in laboratories and other medical facilities.

Benefits of Distilled Water

No Contaminants

Distilled water has no contaminants, thus its water for drinking.

Eliminates Chlorine

Water distillation eliminates chlorine from your drinking water, hence improving the taste of the distilled water while preventing exposure to chlorine.

Great Water Option for Those With an Impaired Immune System

Since distilled water lacks contaminants like bacteria or pesticides, it’s recommended for those with an impaired immune system. For example, some cancer patients become sick from consuming impurities found in water and food. Hence, doctors advice them to drink distilled water.

Obtained Through Natural Process

Another benefit of distilled water is that it’s a natural water. Distillation is a natural water purifying method that involves boiling water, collecting the steam, and converting the steam back into liquid. The removal of All unwanted chemicals and minerals happens during this process.

Risks of Distilled Water Is It Safe to Drink?

Doesn’t Offer Protection Against Tooth Decay

Distilled water might not protect you or your children from tooth decay. People or children who drink distilled water can develop tooth cavities. The main reason being that distilled water lacks fluoride, an essential mineral that aids in strengthening the teeth.

However, recent research has shown that drinking non-fluoridated water may not be the primary cause of tooth decay but taking sugary foods. But, consuming water with fluoride can significantly protect your teeth. Thus, most municipal councils fluoridate public water.

Removal Of Essential Minerals

Another risk of drinking distilled waters is the removal of essential minerals like calcium and magnesium during the distillation process. Hence, drinking only distilled water may not replace the minerals lost when you sweat, since distillation process eliminates all essential minerals

Distilled Water vs. Purified Water: Which Is Best

Well, there are no significant differences between distilled water vs. purified water. The only difference is in the water purification process. Distilled water refers to water that has undergone distillation to attain purity. On the other hand, purified water passes through an array of processes like reverse osmosis, ion exchange, and sand filtration.

purified water has an impurity level that’s below 10 PPM. Both distilled and purified water have attained the identified PPM threshold (both have a PPM of less than 2). Hence, these two drinks of water are a perfect choice and are safe for drinking.

Both distilled water vs. purified water are pure sources of water and are both healthy, so the ideal choice boils down to your personal preference.

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