Is Ro Water Good For Health

RO stands for reverse osmosis. In this era everyone knows how harmful tap water is as it’s very contaminated. Because of that reason RO purification is on demand everywhere for its ability to eliminate impurities from water.

How RO purifier works?

Now one might have a question about how RO works? Well RO is a procedure in which water pressure forces tap water over a semipermeable membrane that permits relatively small water molecules to pass through but not bigger molecules such as dissolved minerals. And thus one gets the pure water free of all the impurities.

Is RO good or bad?

According to most researchers RO is good for health and it being bad is a myth.

Recently many people have raised concern about RO water that it might be ‘over purified’. Is it though? It’s said that the water obtained through RO filters is dead water as it gets rid of every kind of mineral.

So this water is neither helpful nor harmful. But the pH level may vary in these waters and may become acidic.

But there's good news for this case and that is, some reverse osmosis filtrations will add some minerals after they are done with removing the pollutant.

The RO water filtration system one gets in the market these days re-mineralize the water and reimburses the essential minerals which get lost in the RO process.

Read also: Which Water Purifier Is Best For Health?

Benefits of RO purifier

But still RO is used immensely everywhere because of the benefits which are-

Protection against bacteria

Living in an era of polluted water where getting affected by a deadly disease is very likely, it’s good luck to have pure drinking water. In this case RO purifier diminishes the risk of exposure to such diseases as it filters out 99% of the bacteria from the water.

Protection against chlorine

If you have your water from municipal water supplies, then it surely has chlorine because chlorine makes the water easier for humans to consume. Even though chlorine kills off some bacterias but it does have some risks of its own. RO removes chlorine from this water.

Protection against virus and parasites

As per the above point, chlorine does destroy some viruses and bacterias but still it doesnt fight against the bacterias one gets from tap water. So the solution is- RO purifier, yet again.

Provides a better flavour

Tap water goes through a lot of pipes and stays in the underground tanks for long enough to pick up on unpleasant taste and odour along the way. RO water purifies the water enough and removes the awful scent and provides better tasting water.

Customising based on needs

Some of the RO water purifiers come with a TDS controller. So one can change the TDS control of their filter based on the TDS level of their water and have the amount of TDS they need. And also one can just buy a water purifier with a mineral cartridge which will add minerals in the water.

Read also: How Long Does A 5 Stage Filter Last?

Side effects of RO

Now one can question why it is said then that RO water might not be good for health?

According to WHO, assumptions say that no toxins might be equal to good health, but there's a lot more to healthy water than just avoiding contaminants. What's more frightening is that merely a few months of drinking reverse osmosis water might have major adverse effects.

"The effects of the majority of contaminants frequently found in drinking water become apparent after prolonged contact." "However, 'consumption time effects' from water that is low in magnesium and/or calcium may only require a few months of exposure."

It will get worse because reverse osmosis water is deficient in minerals, it leaches minerals from the body when consumed. This means that the minerals and vitamins taken in meals are urinated away.

Also there are some more cons of RO water which are found in research and those are-

  1. It wastes up to 6 times the quantity of pure water it produces.
  2. Professional maintenance is required to ensure efficacy and safety.
  3. Calcium, magnesium, potassium, and bicarbonates are among the healthy minerals that are removed.
  4. Since the chlorine has been removed, there is a risk of bacteria forming in the water after the filtration.

Consuming water with low mineral content has been shown to have a deleterious impact on homeostasis systems, impairing mineral and water metabolism in the body. The electrolytes dissolved in the body water are diluted when reverse osmosis water is consumed.

If the situation turns out like this then the side effects that are included are tiredness, weakness and headache and more symptoms may show up gradually.

RO water was discovered to cause significant losses of all vital nutrients from food when used for cooking (vegetables, meat, cereals).

When mineralized water is used for cooking, these components are lost at a considerably lower rate, and in certain circumstances, food with even higher calcium content has been observed as a result of cooking.

According to the World Health Organisation, adding minerals back into reverse osmosis water is not recommended because the water does not include all of the water's beneficial components.

Aside from the negative effects listed above, RO systems waste 70-80% of the water they filter.

Read also: 5 Things You Should Look for in a Water Filter

Some alternative ideas

Now it is also said that RO water is bad for health is a myth. But if you are still having doubts then these are some alternatives for you-


Proper boiling should be ensured. On the other hand, it does not entirely remove the chemical pollution in water. Furthermore, boiling may not always be practicable at all times or in all logistical situations.


Pour four drops of liquid bleach into one litre of water, eight drops into a half gallon, and sixteen drops into a gallon. To make the water drinkable, let it sit for at least half an hour. Excess chlorine can be dangerous to health so you need to maintain some attention.


If the water temperature is above 21 degrees Celsius, iodine is more effective. Iodine, on the other hand, does not destroy all germs found in water.

Now the suggestion will be to conduct their own study to determine whether a RO system is good for them. But if mineral deficiency is a problem. There is a method to have the best of both world and people can choose between two.

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