Does Reverse Osmosis Remove Calcium And Magnesium From Water?

Does Reverse Osmosis Remove Calcium And Magnesium

Around the world, Reverse osmosis water filters are the most popular technique to remove contaminants from the drinking water. But you know what? RO water can make you sick, Why? Because reverse osmosis removes calcium and magnesium from the drinking water.

According to scientific research, low mineral (TDS) drinking water generated by filtration reverse osmosis or distillation is not safe for long-term human consumption and can harm individuals who consume it. 

If you are concerned with healthy drinking, you can’t neglect or compromise on your water. In this blog, you’ll learn:

  • What minerals do reverse osmosis remove and the importance of life-saving minerals to your life? Secondly, I’ll aware you of the most suitable solution to cope with the dead RO water.

What Does Reverse Osmosis Remove?

Reverse osmosis removes various bacteria, typical chemical pollutants (metal ions, aqueous salts), such as sodium, chloride, copper, chromium, and lead, reducing arsenic, fluoride, radium, sulphate, calcium, magnesium, potassium, nitrate, and phosphorus. 

Working Of Reverse Osmosis

The research of the International Journal of Emerging Technology and Advanced Engineering defined the working of Reverse osmosis water filters in a very beautiful manner:

“In the RO process, the osmosis flow is reversed. By applying hydraulic pressure to the solution’s high concentration side, solvents are urged to filter through the membrane and into the lower-concentrate solution against a pressure gradient. Pressure is provided to a solution across one side of a semi-permeable membrane using a mechanical pump in RO to overcome intrinsic osmotic pressure: a thermodynamic parameter”.

There are several pollutants that reverse the osmosis system doesn’t remove from water. Most organic chemicals, bacterial germs, chlorine by-products, and dissolved gases, including carbon dioxide, methane, and radon, are not successfully removed by filtration reverse osmosis machines.

Does reverse osmosis remove minerals? (CALCIUM AND MAGNESIUM) 

Reverse osmosis water filters remove around 95-99% of TDS from the drinking water supply. As the minerals are heavier than water particles and are easily removable from the RO membrane under high osmotic pressure.

Similarly, Calcium, phosphorus, and magnesium are the most common minerals filtered out by filtration reverse osmosis, many other minerals are also removed.

The World Health Organization (WHO) clarified that the majority of healthy minerals required by the human body are obtained through food or dietary supplements, not from tap water. Minerals in water, on the other hand, can be hazardous to human health. Calcium and magnesium are proven to be vital components for the human body. However, suggesting that we should compensate for this shortage by increasing our water consumption is a weak argument.

Tap water contains a number of inorganic minerals that the human body struggles to absorb. A wide range of degenerative disorders, including artery hardening, arthritis, kidney stones, gall stones, glaucoma, cataracts, hearing loss, emphysema, diabetes, and obesity, are thought to contain them.

The amount of calcium and magnesium in drinking water determines how hard it is. It’s calculated as the amount of calcium carbonate that could be made from calcium and magnesium in solution.

The causative agent responsible for the link between death from cardiovascular or cerebrovascular illness and water hardness has been the subject of two theories. Soft water is more corrosive than hard water, allowing cadmium, lead, and other harmful chemicals to dissolve into the drinking water from the plumbing system. Another notion is that magnesium in water has a protective effect.

How To Make RO Water Alkaline

No doubt, RO is the best technology but this dead water can leach all the minerals from the body and can cause deficiency. According to WHO, minerals such as calcium and magnesium deficiency can lead to bone loss and fracture risk late in life. Osteoporosis is one of the most predominant age-related diseases. 

How to make reverse osmosis water alkaline
Learn More: How to make reverse osmosis water alkaline

Before your lives come into danger, I would like to inform you about the best thing while working in the management of the health department. You should go for alkaline water filters such as:

Moreover, According to the customer’s feedback and my searches, I found the Frizzlife under sink remineralizing Reverse Osmosis water filter as the best filter that adds minerals to the water to make it more crispy and delicious


Some other questions’ answers for our readers might be helpful for reading.

How does reverse osmosis help weed plants?

Filtration Reverse osmosis water is the best solution for serious gardeners. It enables you to control fertilizer delivery to your plants carefully. House reverse osmosis is the way to go if you have delicate plant life. Use hard water instead if you have ordinary house plants.

Does reverse osmosis remove iron?

Any form of iron can be removed using distillation or filtration reverse osmosis. If the water contains a lot of iron, the units can quickly become clogged, thus a Whole House Iron Filters with an RO treatment system is preferable. 

Does reverse osmosis remove chlorine?

Carbon block filters in house reverse osmosis water filtering systems are an excellent approach to removing up to 98 percent of chlorine from water.

Does reverse osmosis remove salt from seawater?

Physical filtration is the most common and successful method for removing salt from water. House Reverse osmosis systems, in particular, are capable of eliminating salt as well as a range of other impurities from softened water.


Here is a question that our readers want to know, reverse osmosis drinking water good or bad. The answer is yes, reverse osmosis is very good to use but It can remove all the essential minerals like calcium and magnesium from the drinking water that is very vital to life.

You’re providing your family with the purest drinking water available by employing a filtration reverse osmosis system in addition to your water softener. Otherwise, alkaline filters such as alkaline water pitchers are recommended options to use mineral and pH balance water to promote health and safety.

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