Reverse Osmosis vs Distilled Water 100% Informational Guide

Hello and Welcome to this amazing article. If you are here, you definitely want to know the reverse osmosis vs distilled water difference.

Everyone in this world demands a purified form of water. They want to drink the purest form of water and in that process, they need to keep certain things in their mind. Drinking purified water sounds either by RO purification or bottled distilled water sounds good by the name, right? But are they the same healthy and functional for the body? Well, no one talks about it.

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People are behind promoting the RO waters and water obtained after distillation.

There are a lot of things you are going to learn in today’s article, where we will discuss the basics of distilled water and reverse osmosis etc.

Sometime people often say that the distilled water bottles available in the market are RO membrane filtered. Are they really true? Lets discuss the difference between Reverse Osmosis filtration and distillation

Distilled WaterRO Membrane
  • Heavy Electric Consumption
  • Removes Minerals, Microorganisms, Heavy Metals
  • Water is boiled, steamed, cooled, and condensed.
  • Low Electric Consumption
  • Removes heavy metals, minerals but not microorganisms
  • Water is passed through a pressure pump into the semipermeable membrane

What is Distilled Water and How Distillation Works?

It is very easy to understand the concept of distilled water. Distilled water is basically purified water obtained after filtration treatment. This can be compared to evaporation.
In evaporation, the sun evaporated water from seas, which turns into clouds and returns back to the earth’s surface in the form of precipitation, usually called rain.
In a similar way, Distilled water is obtained by the steam distillation process. In distillation, water boils into steam, cools, condenses back to liquid. In this process whatever is left behind won’t turn into steam is definitely the heavy minerals.
The minerals are removed from the liquid and obtained liquid is sold in the market in the form of distilled water.
Distilled Water is relatively free from microorganisms because it is obtained after boiling, they also remove heavy metals like zinc, arsenic, fluoride, and some inorganic minerals.

Pros of Distilled Water

The main use of distilled water is in laboratories or industries, where water needs to be mineral-free to perform the further reaction.

Distilled Water can be used for drinking, cooking, baby food preparations.

Distilled Water can be used for Pharmaceutical Preparations.

Cons of Distilled Water

Since distilled water is devoid of microbes, minerals, heavy metals, it is completely safe to drink. There is no toxic effect caused by drinking distilled water. 

People often prefer giving distilled water to their infants because it is free from every such thing that is harmful. One thing it is believed that distilled water removes some essential minerals from water that is required by our body in daily routine and cannot be fulfilled by diet sometimes. Therefore drinking 5 liters of water can fulfill the mineral requirements every day. 

But some researchers believe that those minerals are available in very less proportion in water, they do not affect the mineral requirement, as regular consumption of vegetables and homemade food fulfills the mineral requirement level.

Another drawback of Water distiller is the power consumption and maintenance charge. They have high power consumption. 

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What is RO Membrane and How RO Works?

Ro Membrane Stands for Reverse Osmosis Water Purification System. RO filtration is mostly found in water purifiers, water softeners, and water filters.

Ro membrane acts similar to water distiller. They stop the minerals, heavy metals, etc to drain along with the purified water into the consumer glass. 

RO membrane is regularly used in daily life. Are they really good for the health? Basically when using RO water in the home. By this I mean if your water purifier machine has an RO system. You must know whether you have already a TDS meter installed to check the reading. If the TDS meter is not there, you can purchase one. 

TDS can be dipped in the water and the reading must be noted. If the TDS meter reading is below 100 and your water undergoes RO membrane purification, it is definitely useless water as all the natural minerals of water are removed completely. 

The water will be completely tasteless and slightly acidic in nature. A reverse Osmosis purifier must only be installed when TDS is above 300. This can lower the minerals up to some extent and the water would still have the taste remaining.

In the Reverse Osmosis Filtration process, water is forced through the semipermeable membrane at high pressure. Reverse Osmosis Systems are designed in various stages of filtration

Read This – Reverse Osmosis Water Filter in U.K~ Beginner’s Guide and FAQ

Pros of RO membrane

Water is so important in our life that people drink water blindly, they are not aware of the things that can be present in the drinking water. The world is contaminated with various toxic things, including mother nature’s gift water. RO membrane helps to remove all the contaminants from the water. 

Ro membrane is trusted and being used by families for several years.

The maintenance cost of the Ro membrane is less compared to the water distiller machine. Ro systems work fine and can give a couple of gallons of water all day long.

Cons of RO membrane

If the TDS level is below 300ppm, RO membrane drop down the TDS level of water below 100ppm, this is not good for the body on a continous basis. Also, the taste of RO water is not tolerable due to its acidic nature.

The Reverse Osmosis system is not able to remove microorganisms from the water.


Therefore, as a result, You can see that there is no such huge difference between Reverse Osmosis and distillation, the only thing is that the working mechanisms of both are different. RO membrane is one of the systems of purification and the Distillation process gives distilled water.  In Distillation, the pure water can be obtained by boiling, condensing the water, and collecting the water in a different jar, as a result, heavy minerals settle down, whereas in  Reverse Osmosis Water is passed at high pressure through the semipermeable membrane, this doesn’t remove invisible microorganisms but are successful in removing the heavy minerals and larger particles. 

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