Can I Put Hydrogen Peroxide In My Water Softener?

Can I Put Hydrogen Peroxide In My Water Softener?

Do you have a water softener that has made your life simpler in many ways? Is your water softener running almost every time? Do you want to know how you can take care of this device to prolong its life and maintain efficiency?

Your water softener takes magnesium and calcium out of the hard water and converts it into soft water. In the process, the likelihood of it developing deposits increases. Therefore, you need to take care of the water softener if you want it to keep it running smoothly.

Hydrogen peroxide provides you with a multi-purpose solution. You can put it in your water softener without causing it any harm. The chemical will not only clean the debris from your device but will also disinfect and deodorize it.

So, read on and discover all about using hydrogen peroxide in your water softener! But before that, let’s brush up on some basics to truly understand the later parts of the article.

Soft Water — What Does It Really Mean?

Water naturally contains a variety of minerals, such as magnesium, calcium, and iron. The amount of these minerals present in water determines the degree of hardness and softness of water.

Soft water is typically defined as the type of water with a relatively lesser concentration of minerals, particularly magnesium and calcium, and other ions. It contains less than 1 grain per gallon of minerals which is equivalent to 17.14 parts per million (ppm).

Water with less than 60 mg/l of calcium carbonate is usually classified as soft water. Examples include rainwater and distilled water.

Soft water mainly comes from peat and ignite rocks such as granite, but it may also be derived from sandstone sources.

It feels slippery and tastes salty due to its high levels of sodium.

Soft water has several benefits, from eliminating the risk of calcium deposits in water heating systems and plumbing fixtures to increasing the efficiencies of water-powered and water filtration appliances.

It also prevents the formation of soap scums on your skin and clothes and requires less detergent for cleaning utensils.

However, soft water is unsuitable for drinking due to its extremely low mineral content.

Soft water can occur naturally in the form of rainwater, glaciers, rivers, and lakes, or it can be created by treating hard water with a water softener.

How Does A Water Softener Work?

A water softener works on the principle of ion exchange, in which calcium and magnesium present in hard water are replaced with sodium, converting it into softened water.

A water softener typically contains components – a mineral tank, a control valve, and a brine tank.

The mineral tank contains a bed of resin beads bonded with sodium ions and is where the hard water is softened.

Each resin bead is negatively charged, which attracts the positively charged calcium and magnesium ions as the hard water flows through it. The sodium ions, carrying a much stronger positive charge, exchanges positions with the other mineral ions.

The control valve plays a significant role in the regeneration process.

Before the beads become overloaded with the calcium and magnesium ions that they can no longer soften the water, the control valve automatically starts the regeneration cycle with the maximum capacity of the resin beads already preprogrammed on the control valve’s system.

The brine tank, which lies adjacent to the mineral tank, is a shorter tank containing a highly concentrated solution of sodium chloride or sometimes potassium.

When the softening capacity of resin beads is reached, the brine solution is drawn out of the tank and directed into the mineral tank to wash away the calcium and magnesium ions and renew the sodium ions.

Can Hydrogen Peroxide Help Soften Water?

The composition of hydrogen peroxide makes it a perfect fit for softening water.

Softening water involves getting rid of the calcium, magnesium, and other harmful substances that appear in the water and cause it to harden over time.

Softening water can be done in various ways, even with the help of dish soap. However, until this date, nothing is found to be more effective than a good old hydrogen peroxide mixture.

When hydrogen peroxide comes into contact with hardened water, an exchange of ions takes place. The hard particles are picked by resin beads present in hydrogen peroxide and removed effectively.

Moreover, all the dissolved oxygen is released, and an effective and powerful oxidation takes place.

When water is softened via hydrogen peroxide, it ensures that no mineral residue is left behind and the area is cleaned off any germs or build-up.

Therefore, just like with any other bacteria-affected area, hydrogen peroxide also proves to be a perfect fit for softening water and getting rid of unwanted elements in water that make it dirty and unfit.

Can I Put Hydrogen Peroxide In My Water Softener?

Just like other appliances, your water softener needs timely cleanup. Hard water going inside the device can ultimately result in deposits and gunk build-up. And if not cleaned regularly, this can affect not only the efficiency of the water softener but also its life!

There are two main problems you need to address when it comes to a water softener. Firstly, you need to deal with the possible pathogens that have made their way inside. Secondly, you need to clean the hard water deposits, as we stated earlier.

So, here’s how you can resolve both of these issues using hydrogen peroxide.

#1 Using Hydrogen Peroxide to Disinfect the Water Softener

Hydrogen peroxide is a lifesaver when it comes to disinfecting a water softener. This is mostly due to the fact that this peroxide works perfectly well with water and other elements present in a water softener.

A water softener is made up of lime, magnesium, sodium carbonate, and of course water. All of these ingredients work perfectly with hydrogen peroxide when it comes to disinfecting.

When applied to the water softener, hydrogen peroxide will work over a large PH range, does not leave any residue or bypass, and has a high level of oxidation which is perfect for disinfecting the water softener.

What You Need


  • To start off the process, it’s important that you own a water softener tank that is flexible enough to be cleaned.
  • Take a few teaspoons, preferably 3-5, of hydrogen peroxide, and mix it in some water to have a watery mixture.
  • Once the mixture is ready, pour it into the water softener.
  • After following this, take a long-handled brush, and scrub the inside of the water softener tank. Keep cleaning until satisfied.
  • When the cleaning is done, rinse off the water softener tank with clean water and keep doing so until each and every element of the mixture is rinsed off properly.

#2 Using Hydrogen Peroxide to Clean Hardened Water Out of the Water Softener

Hydrogen peroxide is the perfect solution for hardened water within a water softener.

Over time, dirty water residue can build up within a water softener, especially when not frequently cleaned. This build-up is extremely dangerous and not healthy at all. Therefore, its elimination is important, and hydrogen peroxide gets the job done.

As mentioned above, when hydrogen peroxide comes into contact with the water softener, it immediately reacts and starts working to remove any mold and possible fungi that can occur due to hardened water.

What You Need


  • To start off the process, remove the water softener cap or covering.
  • After that, immediately pour the hydrogen peroxide mixture.
  • This mixture will be a perfect solution of peroxide and clean water, measured with the help of a measuring cup.
  • Once the mixture has been poured, start off the scrubbing with the wooden brush.
  • Scoop up the residue or bypass of salt, which can be left behind due to the build-up of the hardened water.
  • Rinse off the tank with clean water and keep doing so until the water softener is perfectly clean and free of dirt.

How Often Should a Water Softener be Cleaned?

Generally, it is recommended for a water cleaner to be sanitized and cleaned twice a month. However, for water softeners that tend to be used too often, this number will be increased, with the recommendation of three times.

When it comes to a water softener tank, cleaning it frequently can lead to it being weak, and not doing it often can cause a build-up of hardened water. So what should one do?

Find the perfect balance. This balance will be affected by the size of your water softener. The bigger the water softener, the more often it will have to be cleaned.

Moreover, some water softeners come with features that fight a buildup of residue. With such water softeners, cleaning it twice a month is enough.

Why Hydrogen Peroxide Is Good for Cleaning Your Water Softener

Although there are loads of chemicals you can use to clean your water softener, we’ve picked hydrogen peroxide for you, and rightfully so! The multi-purpose oxidizing agent serves a vast array of functions, all of which make it ideal for putting in your water softener.

Here are three of its most crucial properties:

Antimicrobial Properties

Hydrogen peroxide is the finest disinfectant you can get. It is a natural disinfectant and is used to clean up different types of equipment without causing any damage.

It has one more oxygen atom than water, which gives it the ability to oxidize readily.

Peroxide is a faster oxidizing agent than oxygen. It can oxidize very quickly into H-positive and OH-negative radicals. They quickly attack the microbes and kill them with ease. Be it fungi, parasites, or bacteria; hydrogen peroxide is equally good against all of them!

Harmless Byproducts

Hydrogen peroxide is a chemical compound containing two hydrogen atoms and two oxygen atoms. When it breaks down, it turns into water and oxygen gas, two of the most harmless substances we know.

Unlike other commercial cleaners that release toxic gases like chlorine and bromine, hydrogen peroxide is safe to use. You can leave it in the water softener without the hassle of removing it time and time again.


The chemical is also very easy to use. All you need is to make a 50/50 solution of hydrogen peroxide and water. Fill it in a spray bottle, and Voila! You have got the best disinfectant.

Spray the liquid all over the surfaces. You can spray them all over your bathroom, door knobs, and other surfaces. And you don’t have to worry about germs anymore because, with one spray and wipe, you have got the most cleaned surface.

What Hydrogen Peroxide Concentration Is Best to Put In My Water Softener?

The chemical is as diverse as it gets when it comes to concentration. From a mere 0.5% all the way to 90%, you can buy your desired concentration of hydrogen peroxide. But for cleaning a water softener, we suggest you go for the famous 3 percent concentration.

It is just perfect—strong enough to remove the debris and kill the germs but not overpowering enough to damage the device. You can easily order the 3% solution online if you don’t have it. Besides, you can also dilute the solution if you have a stronger one!

The Takeaway

A water softener is a life-saver if the water that comes to your house contains trace minerals. No matter how minute the amount may be, it can pile up and cause damage over time. From the piping of your house to the kitchen utensils, hard water can cause big trouble.

While your water softener cleans the water, the machine needs some cleaning too! Hydrogen peroxide proves to be the best option here as it not just cleans the water softener of all debris but also clears it of all pathogens.

So, take care of your water softener and order your set of hydrogen peroxide bottles today!

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