Do Water Softeners Reduce TDS?

Do Water Softeners Reduce TDS?

Water softening is a process that reduces the hardness of the water, which can be beneficial to your household in a number of ways. But do water softeners reduce TDS (Total Dissolved Solids) in water? Let’s find out!

Water softeners do not lower the TDS concentration in water. Water softeners reduce the amount of minerals like calcium and magnesium in the water, which can make the water hard.

In this article, we will take a deep dive into how water softeners work, their benefits, and whether they can reduce TDS. This article aims to provide you an in depth understanding on the topic. So, be sure to read through to the very end.

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Effects Of High TDS On WaterTDS can be measured with a digital meter

TDS measures all the inorganic and organic materials suspended in water. It is expressed in parts per million (ppm). Generally, the lower the TDS level, the higher the water quality. High TDS levels indicate that the water has minerals, chemicals, or other contaminants, making it unsafe for consumption.

High TDS levels can have several adverse effects. First, it can make it harder to wash up or clean. High TDS levels can form a film on surfaces, making it difficult to wipe away dirt and grime. Second, high TDS levels can change the flavor of food when cooking or drinking. Food may appear bland or taste off as a result of this.

Finally, high TDS levels can shorten the life of water filters. This means that homeowners may need to replace their water filters more frequently, which can be costly. Water with high TDS levels may also taste acidic, salty, or brackish. Homeowners should be aware of the TDS levels in their water and take action if necessary.

How Do Water Softeners Work?

A water softener works by using a process called ion exchange. This is a process in which hard minerals, such as calcium and magnesium, are exchanged for softer minerals, such as sodium. The softener contains special beads that are charged with sodium ions.

When water passes through a water softener, it enters a tank filled with negatively charged resin beads. The beads attract and hold the hard minerals as the hard water passes through the softener. This process is known as ion exchange. The result is softer water that is free of hardness-causing minerals.

In addition to removing calcium and magnesium, the ion exchange process also removes other impurities from the water, such as iron and manganese. This is why water softeners offer so many benefits to homeowners.

Not only do they make water easier to work with, but they also make it safer to drink. You can get the cleanest and purest water possible with a water softener.

Why does water softener not reduce TDS?

While a water softener is an excellent tool for reducing scale buildup and staining, it does not reduce the TDS in your water in any way. This is because a water softener removes the hardness of minerals, such as calcium and magnesium, from the water and replaces it with sodium ions.

This process does not remove any other dissolved solids, such as chlorides, nitrates, sulfates, or other dissolved contaminants. So, a water softener is not the answer if you want to reduce the TDS in your water.

To reduce the TDS in your water, you will need to use a water filtration system such as reverse osmosis, distillation, or Deionization. These systems will remove the TDS from your water and provide clean, safe drinking water.

Benefits of Water Softeners

Few solutions are as effective as a water softener to keep your drinking water safe and healthy. Water softeners can help reduce the number of minerals in your water, such as calcium and magnesium.

But the benefits of a water softener go far beyond just improving the quality of your drinking water. If you are concerned about the quality and safety of your drinking water, you will find that installing a water softener has many other advantages.

Minimizing Scale Buildup

One of the primary benefits of having a water softener is that it can help minimize scale buildup. Hard water can leave a white, chalky residue on dishes and clothes and cause buildup in pipes and fixtures.

With a water softener, this substance is removed from the water. So you don’t have to worry about cleaning it off surfaces or dealing with clogged pipes.

Improves Your Hair and Skin Health

Another benefit of having a water softener is that it can help improve your hair and skin health. Hard water can make your skin and hair dry and brittle as it strips away natural oils.

Also, the calcium and magnesium in hard water can be harsh on your skin and hair, causing them to become dry and brittle. A water softener reduces the number of minerals in the water, so your hair and skin can stay healthy and hydrated.

Boosts the Efficiency of Your Appliances

Having a water softener can also help boost the efficiency of your appliances. Mineral buildup can reduce the efficiency of your washing machine, dishwasher, and other appliances. With a water softener, you can remove these minerals.

So your appliances will run more efficiently and last longer. Additionally, a water softener will allow your appliances to work more efficiently, saving you energy and money in the long run.

Minimizes Water and Soap Use

Another benefit of a water softener is that it can help minimize the amount of water and soap used. Hard water requires more soap to get things clean, and it also requires more water to rinse off the soap.

By removing the minerals from the water, a water softener reduces the amount of soap and water you need to get things clean.

Makes Cleaning Easier

Having a water softener can also make cleaning easier. The calcium and magnesium will not form a stubborn residue on your dishes and clothes. Hard water can make cleaning floors, sinks, and other surfaces tough.

With a water softener, these surfaces will be easier to clean, so you don’t have to spend as much time scrubbing and rinsing.

Enables Faster Warming of Water Heaters

Another benefit of having a water softener is that it can help your water heater warm up faster. Hard water can cause a buildup of minerals on the heating element, which can reduce the efficiency of your water heater.

As calcium and magnesium build up in your water heater, it can take longer to heat the water, meaning you will have to wait longer for hot water. With a water softener, you can remove these minerals from the water, so your water heaters can warm up faster.

Fewer Dish Stains

One of the most significant benefits of using a water softener is that it prevents the buildup of minerals that can cause dish stains. A water softener can assist you in removing dish stains.

Hard water can leave a white, chalky residue on dishes that can be hard to remove. A water softener can help remove this residue, so your dishes won’t be left with stubborn stains.

Overall, using a water softener is one of the most effective ways to ensure the safety and quality of your drinking water.

Alternatives to Water Softeners for TDS Reduction

As a homeowner, the quality and safety of the drinking water you provide for yourself and your family should be a top priority. Total Dissolved Solids (TDS) in water can lead to unpleasant tastes and odors. Also, excessive levels of TDS can even be hazardous to health. But what is TDS, and how can you reduce it in your drinking water?

TDS is a measure of the total amount of solid contaminants present in water. These solids can include minerals, salts, metals, and even organic compounds. When it comes to drinking water, you should keep TDS levels relatively low to ensure a pleasant taste and safe drinking water.

Reverse Osmosis

RO is a filtration process that removes contaminants from water, including total dissolved solids (TDS). By reducing TDS, you can improve your water’s taste, odor, and appearance.

Reverse osmosis is a process by which water is forced through a semipermeable membrane, which acts as a filter. This filter traps and keeps out dissolved particles, including salt, nitrates, and other contaminants. As a result, the water that comes out of the RO process is much cleaner and purer than the original, and the TDS levels are much lower.

Installing a reverse osmosis system in your home is one of the best ways to reduce the TDS in your water. The process removes 99%+ of the TDS from your water, leaving you with safe and clean drinking water.


Distillation is another effective and efficient method of removing TDS from your water. This process involves boiling water, which causes the water to vaporize and leave behind solid particles, such as TDS. The vapor is then collected, condensed, and collected in a separate container, leaving you with clean, pure water.

Distillation is a relatively simple process and you can do it at home with the help of a distillation unit. The distiller works by heating water to boiling point, and then capturing the vapor created. The vapor is then allowed to cool and condense into liquid form, leaving behind all the contaminants.


Deionization is a process that uses a combination of ion exchange resins and filters to remove cations and anions from water. Cations are positively charged ions, while anions are negatively charged ions. By removing these ions from the water, Deionization reduces the level of TDS and other impurities, resulting in cleaner and safer drinking water.

Deionization is a process that uses special resins to remove cations (positively charged ions) and anions (negatively charged ions) from the water. These resins have a natural affinity for the ions and will bind to them, removing them from the water. The resins trap the ions, and the remaining water is free of these impurities.


High TDS levels in drinking water can be a serious health risk. Thus, homeowners need to be aware of the risks associated with high TDS levels and take the necessary steps to reduce their exposure. Now that you are done reading this article, hopefully now you have the answer to the question: do water softeners reduce TDS.

You can ensure that you and your family are drinking safe water by taking the necessary steps to reduce or eliminate high TDS levels from your water.

Chief Guru

Richard Boch is a chemical engineer responsible for designing water filtration systems for industrial and residential customers. He has more than 20 years of experience with ion exchange, activated carbon, and reverse osmosis. Richard's expertise has made him a go-to source for municipalities and businesses looking to improve their water quality. When he's not working, Richard enjoys spending time with his wife and two young children. You can also follow him on LinkedIn, Twitter and Facebook.

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