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How to remineralize water after reverse osmosis: 5 methods

Reverse osmosis systems are a great way of purifying water – but the end result of reverse osmosis water is almost distilled water – and a lot of the natural salts and minerals found in water are no longer present.

As a result, some people like to remineralize their water after it has gone through reverse osmosis.

First off, a disclaimer: You don’t NEED to remineralize water, but you may wish to do so.

Your body gets most of the vitamins and minerals it needs from food rather than water. A study done by the WHO found that demineralized water should be treated with magnesium and calcium found that demineralized water should be treated with magnesium and calcium.

However, it’s important to note that drinking demineralized water does not necessarily mean you’ll end up with a nutrient deficiency – you should already be getting your minerals from food.

If you’re relying on drinking water to provide you with calcium and magnesium, you need to change your diet.

Aside from magnesium and calcium, no other minerals are absorbed in meaningful quantities from water by our bodies.

Again, I’d like to reiterate that the best way to get magnesium and calcium is by eating fruits and vegetables – you should not be relying on drinking water for nutrients!

Still, the study demonstrated that among other things, cooking with demineralized water ended up leeching a lot of the beneficial minerals from food. This is a problem, as you should be getting minerals from food, and if that’s also being compromised, then there is an issue.

5 ways to remineralize reverse osmosis water

There are 5 easy ways to remineralize your RO water:

1. Add a remineralization stage to your reverse osmosis system

Many RO systems ship with an alkalization stage in them. If your unit does not have one, you can easily add one. Basically this is a filter-like attachment which contains minerals(look for a good quality filter that has food-grade minerals). As the water passes over the minerals, they get dissolved back into the water.

This stage is added after the RO water filter stage. The temperature of the water and the pH of the water before it enters the alkalization stage will determine how many minerals are added back into the water.

This is by far the easiest solution since you don’t need to worry about doing any manual work. The moment the purified reverse osmosis water enters the remineralization stage, it will be taken care of.

You’ll need to check whichever remineralization stage you’re buying to see which minerals are added back. Additionally, the minerals will eventually run out, so you will need to replace this stage regularly to keep reaping its benefits.

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2. Use Electrolyte blends

Electrolyte blends(also known as trace mineral drops) are compositions of minerals such as copper, selenium, iron, manganese, calcium, and magnesium that are easily available at most supermarkets. You simply mix the blends back into the water after it comes out of the RO filter.

This is also a really easy solution as you just need to add a few drops to your water container.

However, if you and family tend to drink directly from the reverse osmosis faucet, you’ll have to remember to add a drop every single time to remineralize.

Alternatively, you can just keep a dedicated water jug from now on and make it a rule to only drink water from it.

Blends will differ in composition from brand to brand, but they’ll do the trick for any RO water.

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3. Mineral rich salt

You can simply add some natural salt(like Himalayan salt or rock salt) to each gallon of reverse osmosis filtered water.

You only need to add a pinch. In an entire gallon, the taste won’t change significantly. It will pretty much taste the same as drinking water.

Jut add the pinch and stir to dissolve. Alternatively, if you just leave to sit for a while, it will dissolve by itself.

Don’t use table salt as that’s only sodium and chloride, which is not enough – the rock salt is natural and unprocessed, and contains many more minerals.

Only adding table salt may result in you getting too much sodium, which can lead to other issues.

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4. Get an alkaline water filter pitcher

Use an alkalizing water filter pitcher to store your water and that will automatically remineralize your water. They’re a bit more expensive than using mineral rich salts or electrolyte blends, but they’ll also last longer.

Alkaline water filter pitches have a small remineralization stage at the top of the system which adds trace amounts of minerals back into the water as it drips from the top into the bottom chamber.

You’ll need to replace the filters every so often once they get depleted.

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5. Greens blends

Greens blends are extracted minerals from vegetables and plants. These are a very wide range of balanced minerals that are really good for you but the downside is that they’re quite expensive since they have to be made from the vegetables themselves.

They’ll also make the water taste a bit different than what you’re used to, so you may not actually like it!

They’re not a good choice for long term use especially if you are on a budget, but we’ve just included this method in the post for the sake of being thorough.

In all honesty, it would be cheaper(and better for you) to just eat vegetables! 🙂

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Reasons you may want to remineralize RO water

  • Many diets are sadly deficient in minerals, and in these cases, water can supplement the mineral shortage from food
  • Pure water can’t remain pure for long, as it inevitably dissolves some carbon dioxide from the atmosphere. Once carbon dioxide dissolved, it becomes a slight acid and its pH falls. If you wish to drink alkaline water, adding minerals back into water effectively raises the pH.
  • If you don’t like the taste of pure water, remineralizing can restore some of the familiar taste

Conclusion

Reverse osmosis water is not necessarily bad for you – in fact, in some places, it’s extremely vital to use a reverse osmosis filter otherwise you may be susceptible to water-borne diseases.

In my home country of India, for example, most homes are fitted with RO systems in the kitchen and all drinking water comes from the RO filter or bought in bottles.

There’s no other way, unfortunately.

As I mentioned in the beginning of the article, it is not absolutely necessary to remineralize RO water. In fact, the main driving reason behind wanting to remineralize water should be either to improve the taste or to prevent leeching in cooking.

Whether there are any solid health benefits to drinking alkaline or mineralized water is still subject to debate in the scientific community.

If you want to see the difference in taste between reverse water and mineral water, buy a bottle of Dasani and Aquafina water and have a taste of both..

Both are processed in RO plants, but Dasani water has some mineral content added back into it. Aquafina does not.

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