Is It Ok to Use Reverse Osmosis Water When Making Kombucha?

Kombucha is a fermented tea that is popular in many parts of the world. It’s been used for centuries as a natural treatment for various health issues, and it’s also delicious. But some people are concerned about using Reverse Osmosis water to make kombucha. What do you need to know before you start making kombucha? Is It Ok To Use Reverse Osmosis Water When Making Kombucha?

Reverse Osmosis water is a type of water that has been through a special process to remove many impurities. The process removes things like calcium, magnesium, iron and other substances that are found in most municipal water sources. Reverse Osmosis also removes many of the minerals that are naturally present in water, such as sodium and potassium.

One of the claims made by people who use Reverse Osmosis water is that it doesn’t contain any minerals. This makes it easier for their bodies to absorb nutrients from the foods they eat and drink.

This is true, but it’s not necessarily a good thing. There are some nutrients that your body needs every day to stay healthy, but it can’t absorb them from Reverse Osmosis water. The minerals that are removed from the water through Reverse Osmosis (including calcium, magnesium and others) are needed for healthy bones, teeth and muscles. They are also necessary for proper functioning of your nervous system and for the production of hormones, enzymes and other substances that help your body function properly.


How does Reverse Osmosis Water work?

Reverse osmosis is a water technology that enables you to purify water using pressure and membranes. Reverse osmosis water is different from other types of water because it has a higher concentration of dissolved minerals than other types of water. This means that Reverse Osmosis water can be used to make kombucha.

Is Reverse Osmosis Water Good for Kombucha?

The problem with Reverse Osmosis water is that it is extremely low in minerals. Kombucha tea is a living, fermented food, and it needs all of the minerals that are present in the water to grow and thrive. If you brew your kombucha using Reverse Osmosis water, you may notice that it doesn’t grow as much or as quickly as it does when you use tap water. It also won’t have a nice sour flavor when it’s finished.

If you must use Reverse Osmosis water for your kombucha brewing, try adding some minerals to the fermenting liquid. You can add a pinch of salt or sugar to each cup of liquid before you brew. This will help the kombucha to grow and develop a nice sour flavor.

You can also use a water filter that doesn’t remove minerals, like a very fine sediment filter. A sediment filter uses a mesh to trap dirt and sediment without removing any minerals from the water. This type of water filter will work fine for brewing kombucha, but you may need to change the filter more often than you would with a reverse osmosis system.

Can I Use Distilled Water With Kombucha?

No, distilled water is not recommended for brewing kombucha tea because it is too pure. Distilled water has no minerals at all, which means that there is nothing for your SCOBY to metabolize during the fermentation process.

You can use distilled water to make kombucha if you add some minerals back into it. You can use a pinch of salt or sugar per cup of water before brewing, or you can purchase a mineral kit for brewing kombucha that includes minerals and instructions for adding them to your water before you brew.

Is Tap Water Safe for Kombucha?

Most tap waters are safe for brewing kombucha tea. The only exception is if your tap has chlorine added to it, because chlorine will kill off the good bacteria in your SCOBY that is necessary for the fermentation process. If your tap has chlorine added to it, you’ll need to either buy bottled drinking water or get a filter for your tap.

What Are the Health Benefits of Kombucha?

Kombucha is full of probiotics, which are beneficial bacteria that help your body to digest food and support your immune system. Kombucha also contains antioxidants such as glucuronic acid and gluconic acid, which have been linked to helping the body detoxify from heavy metals and other toxins. Kombucha also is a source of vitamins B1, B2, B6, C and E.

Is Reverse Osmosis Water Good for Fermentation?

The process of reverse osmosis removes minerals, which is not good for the fermentation process. If you have a reverse osmosis water filter, you may want to consider using bottled water or mineralizing the water before brewing your kombucha tea.

Reverse osmosis water can work for fermentation, but it’s not ideal for kombucha. Reverse osmosis water is used to make other water-based drinks, like Pepsi and Coca-Cola. It can also be used in the production of wastewater plants. So, it’s not recommended for use in the brewing of kombucha.

Is It Safe to Use Reverse Osmosis Water to Make Kombucha?

There is no definitive answer to this question. It depends on the specific Reverse Osmosis water you are using, as well as the health of the people who are drinking it. Some people believe that Reverse Osmosis water is harmful, and they caution against using it for kombucha.

Others believe that reverse osmosis water is a very efficient way to make kombucha, and it’s safe to use in most cases. Ultimately, it’s up to you whether or not you want to use Reverse Osmosis water to make kombucha.

What Kind of Water Is Best to Make Kombucha?

The best kind of water to use for kombucha is water that is as close to neutral pH as possible. This means that it’s neither too alkaline, nor too acidic. Alkaline water will give your brew a more sour taste, and acidic water will give it a more bitter taste. Neutral water won’t affect the flavor of your tea as much, but it may increase the risk of mold growth.

Beginners Guide To Fermentation: Kombucha Making

Can Bacteria Grow in Reverse Osmosis?

Yes. Bacteria can grow in water that is filtered by reverse osmosis, but it is not as likely to happen. Reverse osmosis removes a lot of bacteria from the water, but there are still some trace amounts left behind.

Should I Boil Water for Kombucha?

No. You can use water straight from the tap without boiling it. Boiling the water will kill off a lot of the live organisms that are in the water, and they will not be able to help your kombucha brew.

Can Alkaline Water Be Used for Kombucha?

Yes. Alkaline water is actually better for making kombucha than acidic water. The reason that alkaline water is better is because it will increase the pH of your tea, making it more alkaline.


There is a lot of information out there about water and what it does to your tea. It’s hard to know what is true and what isn’t, but the most important thing is to make sure that you are happy with the taste of your tea. If you think that your tap water tastes great, then there is no reason to buy bottled water or install a reverse osmosis filter. If you don’t like the way tap water tastes, then it may be time to invest in some equipment that will improve the quality of your brew.

If you are considering using reverse osmosis water for fermentation, it is best to research the pros and cons before making a decision. The good news is that there are many types of water that can be used for kombucha, so it’s easy to find the perfect one for your recipe.

Meet the author: Jessica Chen

Jessica is a fishing enthusiast and yoga fanatic who enjoys traveling the world and reading books about Buddhism. She has a passion for writing, food, and wine. “Winter is my favorite season. I love sitting by the fire with a good book and a warm cup of hot chocolate.” Learn more about Jessica and the rest of the team.