How to Remove Sodium from Softened Water: 5 Effective Ways

How to remove sodium from softened water

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Water softeners make use of small amounts of salt to soften hard water. Unfortunately, not everyone likes to drink salt in their water.

For example, hypertensive patients, or those who have high blood pressure and need to follow a low-sodium diet, are cautious about the water they drink.

According to experts, the amount of sodium added to tap water by water softeners is determined by the “hardness” of the water. It is important to reduce salt levels in your drinking water.

Salt is a mineral that is naturally found in food and water. As an important nutrient for your health, it helps maintains optimal blood pressure levels and aids in nerve and muscle function. But, as with other things, too much salt is not good for health.

To help you remove salt from water, I will cover the different methods of removing salt from soft water in this article, but first, let’s discuss how salt can get into your drinking water.

How Salt Can Get Into Drinking Water

Sodium is naturally discharged into water by mineral deposits in ground and surface water, as well as seawater. Sodium chloride is an element that is naturally present in seawater, surface water, and groundwater.

Water softeners also add a small quantity of salt (sodium chloride) to tap water. While most people are unaffected by the salt level in softened water, some people require low sodium diets or just prefer to remove sodium from their water.

If you want to enjoy the benefits of purified water but don’t want sodium in your drinking water, you will need to know how to remove salt from your water.

The following are some of the methods available for removing salt from softened water.

How to Remove Sodium from Softened Water

Reverse Osmosis (Membrane Separation)

One of the most effective ways to remove sodium from softened water is to use the Reverse Osmosis method.

This method removes all total dissolved particles, including sodium mineral ions, from water by passing it through a semipermeable membrane. This procedure is even used in large-scale seawater desalination applications to filter salt from water.

The holes in the membrane allow the passage of hydrogen and oxygen, which form water – H2O. One of the most significant advantages of this method is that it is a highly effective and natural way of removing salt from softened water. Reverse osmosis systems, on the other hand, drastically reduce the number of contaminants in water.

Thermal Distillation

This has to do with heat. It turns boiling water into vapor, which is collected and condensed back into the water by cooling it down, leaving the salt behind. This is cooled by passing it through a series of pipes at low temperatures, causing the vapor to condense.

The vapor then condenses into water, which is referred to as the distillate. The salts and minerals in the water are left behind, purifying the distillate. Gases such as oxygen, argon, and nitrogen can be distilled from the air.


This is a procedure that involves passing an electrical current through electrodes. This method removes the dissolved salts in water by straining them through an ion-exchange membrane.

This separates the water into two channels, one with low sodium content and the other with high sodium content. This is the least popular method for removing salt from softened water.

Capacitive Deionization Systems

This method differs from reverse osmosis membrane filtration in that it only requires very low voltages (the voltage demand is less than that produced by a single AA battery).

Capacitive deionization works by pumping water into a cell containing two carbons, which are known as electrodes. The electrodes are then connected by a voltage, which causes a current to flow and the salt to move into the electrodes, where it can be stored.

It is part of the electrochemical desalination methods, with applications for water and wastewater treatment. The treated water passes through oppositely charged porous electrodes in a typical CDI process; the applied electric field extracts the salt ions, which are then adsorbed onto the porous electrode surface.

This method of desalination has the advantage of being much more compact and can be set to leave needed chemicals in the water.

Potassium Chloride

According to studies, softening water with potassium chloride doesn’t add salt to drinking water. It will remove up to 90% of the sodium from the water. To soften water, potassium chloride can be used instead of sodium.

This method replaces hard minerals like calcium and magnesium with potassium instead of sodium. This is a very expensive solution since potassium chloride is more expensive to mine than sodium chloride.

Potassium chloride is also required for healthy plant and animal growth, including human growth.

How to Remove Salt from Sea Water

The oceans span over 70% of the Earth’s surface, and 97 % of all water on and in the Earth is salty, implying that our planet has a lot of salty water.

The density of ocean water can be affected by salinity: water with higher salinity is denser and heavier and will sink under warmer, less salty water.

Ocean currents may be affected as a result of this. It may also have an impact on marine life, which may need to regulate their intake of saltwater.

If you are looking for the process of removing salt from seawater, there are many ways to do this. The main methods are desalination and natural distillation.


Desalination is the process of removing salt from seawater, and it is increasingly being used around the world to provide people with much-needed fresh water.

Distillation desalination is one of humanity’s earliest types of water treatment, and it is still widely used around the world today.

Many ancient civilizations used this procedure to transform seawater into drinking water aboard their ships.

Desalination plants are now used to convert seawater to drinking water on ships and in many dry regions of the world, as well as to treat water that has been contaminated by natural and manmade toxins in other areas.

Distillation is maybe the only water treatment method that entirely removes the largest range of contaminants in drinking water.

As reported by the International Desalination Association, 18,426 desalination plants were operational in June 2015, making 86.8 million cubic meters each day and providing water to 300 million people around the world.

The United States is one of the most important users of desalinated water among developed countries, especially in California and sections of Florida, where the amount climbed by 10.71 percent in two years from 78.4 million cubic meters in 2013.

The high cost of desalination has prevented it from being used more frequently.

Natural Distillation

Desalination has occurred naturally on Earth since the creation of the seas. The sea’s water evaporates and then condenses to form pure rainwater.

Desalination has been used by humans in the form of distillation for more than 2000 years. This method was used to purify seawater many centuries ago, when Greek sailors used an evaporative method to purify seawater.

When it comes to removing salt from seawater, this is the simplest and most cost-effective method. Natural distillation is done by drying seawater in the sun, which causes water to evaporate and condense, resulting in freshwater.

Does Boiling Water Remove Salt?

Does Boiling Water Remove Salt?

Boiling water does not remove salt or other nutrients; the procedure increases the salt concentration in the cooking pot.

When the water reaches the boiling point, it begins to evaporate, which reduces the volume of water in the pot. The salts have a much higher boiling point and therefore remain in the pot.

As a result, boiling water that contains salt makes it even saltier because the ratio of sodium to water changes in favor of sodium. If you are on a low-salt diet for health reasons, check with your doctor to see if any of these methods would be necessary.

Despite the fact that the amount of heat needed to boil saltwater is less than that required to boil fresh water, boiling water will not eliminate the salt content.

To make the water fit for human or animal consumption, the salt needs to be removed using other methods, as explained above.

Sodium has a boiling point of 621degrees Fahrenheit, while the boiling point of water at sea level is 212 degrees Fahrenheit. Boiling water will eliminate almost 100 percent of the contaminants and pathogens in the water, but not salt.

Conclusion on How to Remove Sodium from Softened Water

Clean and drinkable water is becoming a more scarce resource, and we must discover strategies to conserve it that are both economically and environmentally viable.

The solution is to remove sodium from softened water. Though the salt concentration of softened water does not affect most people, it is important to know the methods of removing salt from softened water.

The common method is to set up a reverse osmosis system to provide clean water. The advantage of this method is that not only will salt be removed from your drinking water, but you will also have peace of mind knowing that many other contaminants will also be removed.

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