Do Water Softeners Remove Chlorine?

In your quest for understanding how water softeners work, you may have come across the question: “Do water softeners remove chlorine?” It’s a valid concern, as chlorine is often added to tap water as a disinfectant.

In this article, we’ll explore the relationship between water softeners and chlorine, shedding light on whether water softeners effectively remove this chemical from your water supply. So, let’s get straight to the facts!

How do water softeners work?

Water softeners work through a process called ion exchange. When hard water enters the water softener, it passes through a resin bed that contains tiny resin beads. These beads are charged with sodium ions.

Do Water Softeners Remove Chlorine

As the water flows over the resin beads, the calcium and magnesium ions in the water are attracted to the resin beads and exchange places with the sodium ions. The result is softened water that is low in calcium and magnesium ions.

Ion exchange process

The ion exchange process is the key mechanism behind water softeners. The resin beads in the water softener are negatively charged, while calcium and magnesium ions carry positive charges.

When water containing these ions enters the water softener, the resin beads attract and hold onto the calcium and magnesium ions while releasing sodium ions into the water. This exchange effectively removes the hardness minerals from the water and replaces them with sodium.

Regeneration process

Over time, the resin beads in the water softener become saturated with calcium and magnesium ions and need to be regenerated. The regeneration process involves rinsing the resin beads with a brine solution that is high in sodium. This brine solution is typically made by dissolving salt in water.

During regeneration, the resin beads release the calcium and magnesium ions they have collected and take up the sodium ions from the brine solution. The excess brine, along with the dissolved calcium and magnesium ions, is then flushed out of the water softener, leaving the resin beads ready to remove hardness minerals again.

What does a water softener remove?

Water softeners are primarily designed to remove calcium and magnesium ions, which are responsible for water hardness. These minerals can cause scale buildup in pipes and appliances, decrease the effectiveness of cleaning products, and leave soap scum on dishes and laundry.

In addition to calcium and magnesium, water softeners can also remove other impurities such as iron, manganese, sediment, and dirt.

Calcium and magnesium

Calcium and magnesium are the main minerals responsible for water hardness. When present in high concentrations, they can lead to lime scale buildup and reduce the efficiency of household appliances such as dishwashers and water heaters.

By removing these minerals, water softeners can help prolong the lifespan of appliances and prevent the need for costly repairs or replacements.


Iron is another common impurity found in water. It can give water a metallic taste, cause staining on clothing and fixtures, and contribute to the formation of rust. Some water softeners are capable of removing iron, but in cases of high iron levels, a dedicated iron filter may be necessary.


Manganese, like iron, can cause staining and unpleasant tastes in water. While water softeners can partially remove manganese, it may require additional treatment methods such as oxidation or filtration for complete removal.

Sediment and dirt

Water from wells or underground sources may contain sediment and dirt particles. Water softeners with built-in filters or pre-filters can help remove these impurities, ensuring cleaner and clearer water throughout the household.

Does a water softener remove chlorine?

Water softeners are not specifically designed to remove chlorine, but they can partially reduce its presence in the water. During the ion exchange process, some chlorine molecules may be attracted to the resin beads and removed.

However, the removal of chlorine by water softeners is not as effective as dedicated chlorination removal systems.

Do Water Softeners Remove Chlorine?

Partial removal of chlorine

Water softeners can typically remove a certain percentage of chlorine from the water, but the exact amount varies depending on factors such as flow rate, contact time, and chlorine concentration.

Generally, the closer the water softener is to its regeneration cycle, the less efficient it becomes in chlorine removal.

Why does chlorine remain?

Chlorine often remains in the water even after passing through a water softener because chlorine molecules are smaller than calcium and magnesium ions. The resin beads in the water softener are designed to attract larger ions while allowing smaller chlorine molecules to pass through.

Additionally, chlorine is not the primary target for water softeners, which are primarily designed to remove calcium and magnesium.

Alternative solutions for chlorine removal

If the removal of chlorine is a primary concern, there are alternative water treatment options available. These include activated carbon filters, reverse osmosis systems, and UV filters. Each of these methods is specifically designed to remove chlorine and other contaminants from the water, providing a comprehensive solution for chlorine removal.

Benefits of removing chlorine from water

Removing chlorine from water offers several benefits for both health and household maintenance.

Healthier water for bathing and drinking

Chlorine is commonly used as a disinfectant in municipal water supplies to kill bacteria and other pathogens. However, the presence of chlorine in water can have adverse effects on health, including skin and respiratory irritation. Removing chlorine from water ensures a healthier bathing and drinking experience for you and your family.

Smoother skin and hair

Chlorine can strip the natural oils from our skin and hair, leading to dryness, itchiness, and dullness. By reducing or eliminating chlorine from your water, you can enjoy smoother, softer skin and hair, reducing the need for excessive moisturizers and conditioners.

Reduced skin and respiratory irritation

Many people with sensitive skin or respiratory conditions, such as asthma, can experience irritation when exposed to chlorine in water. By removing chlorine, you can alleviate symptoms and make your daily activities more comfortable.

Are there specific water softeners that remove chlorine?

While water softeners are not specifically designed to remove chlorine, there are certain types of water softeners that may have additional features or components for chlorine removal.

Combination systems

Some water softeners come with additional filters or media beds specifically designed to reduce chlorine content. These combination systems offer the benefits of both softening and chlorine removal in one unit.

Do Water Softeners Remove Chlorine?

Additional filters

Another option is to install a separate chlorine filter alongside your water softener. These filters are typically filled with activated carbon, which has a high affinity for chlorine molecules. By using both a water softener and a chlorine filter, you can effectively address multiple water quality concerns.

Can chlorine be removed without a water softener?

Yes, chlorine can be removed without a water softener. There are several standalone water treatment methods that focus specifically on chlorine removal.

Activated carbon filters

Activated carbon filters are highly effective at removing chlorine from water. The activated carbon adsorbs the chlorine molecules, effectively trapping them within the filter. These filters are available in different forms, including pitcher filters, faucet filters, and whole-house filters.

Reverse osmosis systems

Reverse osmosis (RO) systems can remove chlorine along with a wide range of other impurities. The water is forced through a semi-permeable membrane, leaving the chlorine and other contaminants behind. RO systems are often used for comprehensive water purification and can be installed as a standalone unit or as part of a whole-house water treatment system.

UV filters

UV filters use ultraviolet light to disinfect water and remove chlorine. The UV light disrupts the DNA of microorganisms, rendering them harmless. UV filters are particularly effective at removing chlorine, bacteria, viruses, and other pathogens.

These filters are commonly used in combination with other water treatment methods to provide comprehensive water purification.

Considerations when choosing a water treatment system

When deciding on a water treatment system, there are a few factors to consider:

Water hardness levels

If you live in an area with extremely hard water, a water softener may be necessary to remove the excess calcium and magnesium ions. However, if your primary concern is chlorine removal, other treatment methods may be more appropriate.

Other contaminants

In addition to chlorine, you may want to consider whether there are other contaminants in your water that need to be addressed. Testing your water for impurities such as iron, manganese, bacteria, or pesticides can help determine the most suitable water treatment system for your needs.

Budget and maintenance

Water treatment systems vary in cost and maintenance requirements. Consider your budget and the ongoing maintenance that each system requires. Water softeners, for example, may need regular additions of salt and periodic cleaning of the brine tank.

Maintenance and care for water softeners

To ensure that a water softener functions optimally and continues to remove hardness minerals and chlorine efficiently, proper maintenance is essential.

Regular addition of salt

Most water softeners utilize salt to create the brine solution necessary for regeneration. It is important to regularly check the salt level in the brine tank and add salt as needed to ensure the resin beads can properly exchange ions during regeneration.

Cleaning the brine tank

Over time, the brine tank of a water softener may accumulate debris, salt bridges, or mushy salt. Regular cleaning of the brine tank is recommended to prevent any blockages or malfunctions.

Replacing resin beads

Resin beads in water softeners can degrade over time and may need to be replaced periodically. It’s important to monitor the performance of the water softener and consult the manufacturer’s guidelines for when to replace the resin beads.

You may also like What Should My Water Softener Hardness Be Set At?/Does A Water Softener Remove Fluoride?


Water softeners are an effective solution for removing hardness minerals such as calcium and magnesium from your water supply. While they can partially reduce chlorine content, dedicated chlorine removal systems may be more appropriate for addressing high chlorine levels.

By considering your specific water quality concerns, you can choose the right water treatment system that provides the benefits you desire, whether it’s softer water, chlorine removal, or comprehensive water purification.

Regular maintenance and care will help ensure the longevity and efficiency of your chosen water treatment system, allowing you to enjoy clean, pure water for years to come.

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