Purified Water vs. Distilled Water: The Differences and Benefits

Dive into the detailed comparison of purified water vs. distilled water. Discover their unique benefits, differences, and which one is right for your needs. Stay hydrated with knowledge!

Water is a fundamental element for our survival and plays a crucial role in maintaining our overall health and well-being. With sources ranging from spring water to mineral deposits, and products like mineral water available in plastic bottles, the choices are abundant. However, not all water is created equal. Beyond just spring and mineral water, we often come across terms like purified water vs. distilled water, but what exactly do they mean? Additionally, methods like using carbon filters also come into play when discussing water purification. In this article, we will delve into the differences between purified and distilled water, their respective purification processes, and the potential benefits they offer. So, let’s quench our thirst for knowledge and dive into the nuances of purified and distilled water.

Understanding Distilled Water

The Distillation Process and Pure H Type of Water

Distilled water, sometimes referred to as “Pure H” type of water, is created through a process known as distillation. In this purification method, impure water is heated to produce steam, which is then condensed back into liquid form. The contaminants and impurities present in the original water, including those not commonly found in RO (reverse osmosis) water, are left behind during the evaporation process, resulting in the production of pure, distilled water.

Removal of Contaminants in U.S. Food and Water Sources

Many contaminants found in water, such as inorganic minerals and metals, have high melting and boiling points. As the water is boiled, the pure water molecules evaporate, leaving behind these impurities. Distillation effectively removes bacteria, viruses, chemicals, and minerals from the water, ensuring that it meets U.S. food and water safety standards, resulting in a highly purified product.

Safety Concerns

While distilled water is free from most contaminants, there are some safety concerns to consider, especially when comparing to RO water. Volatile organic compounds, including certain pesticides and herbicides often found in U.S. food and water sources, have lower boiling points than water. These compounds can evaporate and condense along with the steam, potentially contaminating the distilled water. Therefore, it is crucial to employ additional purification technologies alongside distillation, like RO, to ensure the removal of all harmful compounds.

Benefits of Distilled Water

Distilled water is essentially pure H2O, devoid of any dissolved minerals or impurities. This attribute makes it suitable for various applications, including laboratory experiments, medical procedures, and certain industrial processes. Distilled water is also commonly used in household appliances that require mineral-free water to prevent mineral buildup and prolong their lifespan.

Exploring Purified Water

Purification Methods

Purified water, on the other hand, undergoes a different set of purification methods compared to distilled water. These methods may include filtration process with sand, ion exchange, reverse osmosis, and other advanced filtration techniques. Each method targets specific impurities and contaminants, resulting in a high level of purity.

Impurity Removal and Environmental Impact

To meet the legal definition of “purified water,” the impurity load in the water must be reduced or eliminated to extremely low levels. Different ways, including purification processes such as deionization and reverse osmosis, effectively remove various impurities, including salts, minerals, harmful substances, chemicals, and microorganisms. Using a water filter can further enhance the quality, resulting in clean, filtered water that meets stringent purity standards and reduces environmental impact by avoiding bottled water waste.

Retention of Essential Minerals and Trace Minerals

One significant difference between distilled and purified water lies in their mineral content. Distillation removes all minerals, including beneficial ones like calcium and magnesium. In contrast, purified water, depending on the purification process used, retains some essential and trace minerals. This retention can provide a source of essential minerals for those consuming purified water, ensuring they benefit from the health advantages of these trace elements.

Regulation, Standards, and Water Filter Use

To ensure the safety and quality of purified water, regulatory bodies such as the U.S. Food and Drug Administration (FDA) and the Environmental Protection Agency (EPA) set standards and guidelines. These regulations help maintain the purity and integrity of purified water, making it a reliable and safe choice for consumption. The use of water filters, which have become increasingly popular, also adheres to these standards, offering an added layer of protection against potential contaminants.

Comparing Distilled and Purified Water

1. Differences in Purification Processes

The primary distinction between distilled and purified water lies in their respective purification processes. Distilled water is produced through the evaporation and condensation of water molecules, leaving behind impurities. Purified water, on the other hand, undergoes various filtration and purification methods to remove contaminants and impurities.

2. Mineral Content

As mentioned earlier, one of the key differences between distilled and purified water is their mineral content. Distilled water is completely devoid of minerals, while purified water may retain some beneficial minerals, depending on the purification method employed.

3. Safety Considerations

Both distilled and purified water undergo rigorous purification processes, ensuring a high level of safety. However, it is important to note that the safety of water also depends on the source water quality, additional purification steps implemented, and the presence of any specific contaminants of concern.

4. Application and Usage

The choice between distilled and purified water often depends on the intended application. Distilled water is commonly used in laboratories, medical facilities, and certain industrial processes that require a high level of purity. Purified water is more versatile and can be used for drinking, cooking, and various other household applications.

5. Taste and Preference

Another factor to consider when choosing between distilled and purified water is the taste. Distilled water is often described as having a flat taste due to the absence of minerals. Purified water, with its retained minerals, may have a more natural taste that some people prefer.

Health Considerations

When it comes to health benefits, the choice between distilled and purified water is subjective and depends on individual circumstances. Distilled water, lacking minerals, may not contribute to daily mineral intake. Purified water, with its mineral content, can provide a source of essential minerals for those who do not obtain them from other dietary sources.

Choosing the Right Water for You

Factors to Consider

When deciding between purified water vs. distilled water, several factors should be taken into account. These include the quality of the tap water in your area, existing purification systems, personal health conditions, and individual taste preferences.

Tap Water Quality

The quality of tap water can vary depending on geographical location and local water treatment processes. If your tap water has contaminants or impurities, choosing distilled or purified water can add safety and peace of mind.

Existing Purification Systems

If you already have a home water purification system in place, such as a reverse osmosis filter or activated carbon filter, you may not necessarily need to choose distilled or purified water separately. These systems are designed to remove a wide range of impurities, ensuring the water you consume is clean and safe.


In conclusion, both distilled and purified water have their unique characteristics and benefits. Distilled water is created through the process of distillation, resulting in a pure, mineral-free product. Purified water, sourced often from municipal water systems, undergoes various filtration and purification methods to remove unwanted contaminants and impurities while retaining essential minerals. The choice between purified water vs. distilled water, and even clean water from other sources, ultimately depends on individual preferences, tap water quality, existing purification systems, and specific health considerations. By understanding the differences and benefits of each, you can make an informed decision and ensure that the water you consume is free of unwanted contaminants and meets your needs for purity and safety. Remember, staying hydrated with clean, safe water is essential for maintaining optimal health and well-being.