What is the pH Of Distilled Water?

Water is essential for the proper functioning of the body. It helps regulate body temperature and keep the body hydrated.

Rehydration helps restore the water lost in the body through sweating and breathing.  Water carries nutrients around the body and allows the body to absorb nutrients and minerals.

Because water most times get contaminated, it requires treatment to rid it of contaminants harmful to the body. So, what is the pH of distilled water, and how healthy is it to the body?

The Basics of pH

The concept of pH was first introduced by a Danish Chemist Soren Peter. pH is an acronym that stands for "power of hydrogen." The "H" is in capital letters because it is the symbol of the element Hydrogen.

PH is a scale that measures the acidity and alkalinity of a water solution. It runs on a range of 0 to 14, 7 being the balanced pH for water. Anything below 7 indicates that the water is acidic, and anything above 7 shows it is alkaline.

What is the pH Scale?

Acidity and alkalinity of water are measured with a pH scale. Usually, it ranges from 0 to 1 on the scale. Also, the pH scale measures the relative amount of free hydrogen and hydroxyl ions in water.

What is the pH Scale?

Water containing a high amount of free hydrogen ion is considered acidic, and water containing hydroxyl ion is alkaline. pH is an indicator of the chemical content of water and, to a great extent, determines the water quality. 

At room temperature, purified water is neither acidic nor alkaline and has a pH level of 7. It is essential to test the pH level of water because waters that are alkaline have a high pH level and tastes bitter.

Water contains minerals that constitute the pH level of the water. The human body naturally has a pH level of 7.4, and that needs to be maintained.

What is the pH Level of Distilled Water?

Before we discuss the pH level of distilled water, it is imperative to know what distilled water is. Distilled water is gotten by boiling water and condensing the steam back into a liquid. So, distilled water is any water that has undergone the process of filtration. Since water naturally contains minerals beneficial to the body, distillation rids the water of these minerals.

What is the pH Level of Distilled Water?

So, what is the pH level of distilled water? According to Sciencing, "distilled water is the most chemically pure form of water." The distilled water pH level is 5.6 and 7. Distilled water should be at a neutral pH level of 7, and remains pure immediately after the distillation process. 

However, over time, the pH level decreases. When distilled water sits for about two hours, it absorbs more carbon dioxide in the air, making it acidic.

Though it is possible to neutralize the pH level of distilled water, it will not stay on a neutral level of 7 for too long. That is to say that the pH of distilled water ranges below 7 and is therefore slightly acidic.

Distilled Water Should Be pH Neutral

Most people ask if distilled water is always on a neutral pH level of 7. The distillation process entails boiling water and collecting the condensed steam back into a liquid state. 

Distilled Water Should Be pH Neutral

After distillation, some substances that may have dissolved in the water vaporize, except salt and other solid contaminants.

So, to rid the water of these contaminants, other distillation techniques may be employed. This should bring the pH level of the water to 7. However, this level will eventually reduce.

Pure Water is Slightly Acidic

On a reasonable basis, if the water pH is measured immediately after purification, it would be at level 7. This means that it will neither be acidic or alkaline. Nevertheless, the water will not stay neutral for long.

The pH level of pure water is almost or slightly over 5.8, and that makes it acidic. The reason is that water will absorb carbon dioxide until the carbon dioxide in it is on the same level as the one in the air. When water reacts with carbon dioxide, it releases hydronium ions into the water.

Can the pH of Distilled Water Change?

The distilled water pH level is mutable. Why? After distillation, water begins to absorb compounds in the air to form acids, decreasing the water's pH level.  

Can the pH of Distilled Water Change?

For example, carbon dioxide and sulfur dioxide are compounds in the air. Sulfur dioxide is a gas that reacts fast with other substances to form harmful compounds like sulfuric acid. 

So, when distilled water absorbs carbon dioxide, it turns into carbonic acid in the water. The same thing happens when water absorbs sulfur oxide. Sulfur oxide reacts in water to form sulfuric acid.

When these two acids are formed in distilled water, it reduces the water's pH, which in turn changes the water temperature.

On the other hand, for water to remain almost neutral, it should be stored in a glass jar with a lid. This can help minimize the issue.

How Do You Measure the pH of Distilled Water?

How Do You Measure the pH of Distilled Water?

If your question has been, “what is the pH value of distilled water?”, you can determine that yourself. There are easy multiple ways water pH can be tested. To test the pH of distilled water, try these three methods:

Use a pH meter

Use a pH meter

A pH meter is an instrument that measures the presence of hydrogen ion in water. Before using this instrument, ensure you consult the users’ guide. But, basically, to use the pH meter:

  • Clean the probe by rinsing it in water and wiping it off with a clean towel
  • Next is to fill a container with distilled water. The water level will have to cover the tip of the probe to read correctly.
  • Then, let the water sit so the temperature can stabilize
  • Dip the probe into the water and leave for some time
  • Remove and read the meter. If it is at 7, then the water is pure. But if the probe reads anything lower than 7, its acidic, and higher than 7 is alkaline

Use a pH paper

Use a pH paper

pH paper usually comes in a color-coded scale to help indicate the water pH level. So, when the paper is dipped in a solution, the colored part of the paper changes color. pH paper comes with a color chart to help you ascertain the pH level of the water.

So, to use the pH paper:

  • Fill a container with distilled water.
  • Dip a test strip into the water. The strip will change color gradually.
  • Determine the pH level of the water by checking the color of the strip. A dark greenish-blue color is an indicator that the solution has a high amount of alkaline. In an acidic solution, the paper turns red. Also, when the solution is at a neutral level, the paper turns purple. Green shows that the solution had slight alkaline content.

Use Litmus paper

Use Litmus paper

Litmus paper is almost like the pH paper, but it functions differently. It will only indicate a solution that is either acidic or alkaline. It will not show the exact extent of acidic and alkaline concentration in water. Litmus paper comes in colors of red and blue.

In using the litmus paper:

  • Fill up a container with test water.
  • Dip the litmus paper into the water.
  • To determine the acidic or alkaline content of the water, check the change in color. A red litmus paper will turn blue when dipped in alkaline water. Conversely, a blue litmus paper will turn red when submerged in acidic water. The neutral pH level will not change the color of the litmus paper.

How to Raise the pH of Distilled Water

How to Raise the pH of Distilled Water

Drinking water needs to be purified firstly to remove contaminants, and secondly, to raise the pH and mineral content. So, to increase the pH of distilled water, follow these methods:

  • Water distiller - A water distiller removes acidic particles from drinking water by heating it and condensing the steam to form water that is free from an acidic component.
  • Neutralizing filter - Neutralizing filters are made with calcite, limestone, or magnesia. It releases calcium or magnesium into the water, thereby increasing the pH from acidic to alkaline or neutral level.
  • Water ionized - Water ionizer separates the alkaline and acidic components of water through electrolysis. It can increase the pH of the water to 9.
  • Baking soda - Baking soda is effective for increasing water pH levels. Just add a teaspoon to your water and turn until it completely dissolves.

What Is the pH of Distilled Water?

What is the pH Of Distilled Water? FAQs

Is Distilled Water the Same as Filtered Water?

NO. Distilled water and filtered water may be similar, based on the purification level, but they vary in the purification process. Filtered water retains most of its minerals even after filtration, but the distillation process rids the water of necessary minerals. 

Is Distilled Water Safe for Babies?

Usually, distilled water is safe if used in baby formula. It should not be the only water the baby drinks because it is deficient of essential minerals that the baby needs to function properly and effectively.

How Long Do You Boil Water to Make it Distilled Water?

Merely boiling water will not turn it to distilled water. Distilled water must be brought to a boil for about 45 minutes or more until it condenses into steam. The steam is what is collected back as distilled water.

Is Spring Water the Same as Distilled Water?

The significant difference between distilled water and spring water is that distilled water does not come naturally. It must undergo a boiling process. Whereas, spring water comes naturally from spring, but might need to be filtered to rid it of debris and bacteria.

Does Distilled Water Have Dissolved Oxygen?

Distilled water may contain oxygen, depending on the water temperature. If distilled water is left to sit uncovered, after some time, it may absorb oxygen from the environment.

Wrap Up!

Distillation is a process of purifying water. However, it goes beyond ridding the water of contaminants like bacteria and viruses. It removes the necessary minerals that are needed by the body. 

Though distilled water rids contaminants from water, it does not maintain the body's neutral pH level. This is because it absorbs carbon dioxide in the environment, returning it to its acidic state.

Probably, you have been asking, "what is the pH level of distilled water?.” Well, here is your answer. Distilled water has a pH level that is a bit lower than 7, and so it is slightly acidic.

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