11 Best Water Filters To Remove Calcium: Top Quality!

Although calcium is an essential mineral for the human body, excessive calcium in water makes it hard. And hard water is not only harmful to your health but also risky for your skin and hair fall. 

To avoid excessive amounts of calcium from the water, you need to filter the water. I know most people reading this article have a water filter, and still, they want a water filter system that can remove calcium from the water. 

Infact, not every water filter is perfect for removing calcium from water, and it’s a pretty challenging task to choose the best one. We compiled a list of the 11 best water filters to remove calcium by considering a few things and spending a lot of time researching. 

Considerations Before Buying Best Water Filter For Calcium 

water filter for calcium water

There are a variety of water filters available in the market, but not everyone is effective for removing calcium. So you should keep these few things to get the best water filter system that removes calcium from the water.

Ion Exchange Technology

The best solution to remove calcium from water is to use a filter that offers ion exchange technology. Using this method, a filter exchanges calcium and magnesium ions with some useful minerals and makes water soft. 

So it’s good to use a water filter with ion exchange technology. Tier1 Everyday Series 32,000 and AFWFilters 5600SXT 48,000 Grain Water Softener are the best filters with ion exchange technology.

Reverse Osmosis

Filters with reverse osmosis are also perfect for removing calcium from the water. Such filters use semi-permeable membranes that block all the harmful pollutants and contaminants. So you should consider this factor before picking a water filter for calcium. 


The last thing is price, and it depends on you. A good quality water filter is always expensive because they offer premium filtration components that effectively filter water. If you are looking for a whole house water filter system, it may cost more money than the under sink water filters.

11 Best Water Filter For Calcium 

1- APEC Water Systems

best water filter for calcium

APEC water filter system is one of the best-selling systems; its effective filtration system removes calcium and lime from water and eliminates limescale and other toxins. 

Because of its advanced and space-efficient design, you can easily install it under the sink. You will also get step-by-step installation videos and detailed instructions about installation. So you don’t need to worry about it.

5 Stage Filtration and Reverse Osmosis

Because of its multi-stage water filtration technology, we have put this water filter system on the top. When water passes from all these stages, it becomes 99% germs-free, and there will be no contaminants remaining in the water. 

The carbon filter is made up of premium NSF-certified material that blocks all harmful chemicals and chlorine from the water, making it perfect for drinking. 

Plus, for more advanced filtration APEC system offers Reverse Osmosis that filters out all the unwanted molecules and large particles like salt, dust, dirt particles, and more. It not only makes water pure but also improves its taste and removes odor from it.

It uses different types of filters for micro-level filtration; these filters are;

    • 1 pre-filter
    • 2 particulate filters
    • 2 microfilters

Supreme Quality

Compared to the rest of the water filters, we have seen that APEC systems are made from the most durable material that can last longer. Its US-built components and filters are certified against NSF standards, so you don’t need to worry about its quality.

  • 5 Stage Filtration
  • Reverse Osmosis
  • Durable material and high quality
  • Water low could be improve

Best Whole House Water Filters For City Water

2- Express Water RO5DX Reverse Osmosis Filtration 

how to remove calcium from water

I like the Express water filter because it can produce up to 50 gallons of ultra-pure water a day. If you have a large family, it’s the best choice ever, and it can also be used for parties, functions, and other ceremonies. 

The built-in quality is pretty amazing, and you will get 1 year of warranty plus lifetime expert support from certified water technicians.

Effective FIlter To Remove Calcium From Water

Because of the 5-stage filtration, the Express water filter system can remove calcium and 99% of lead, fluoride, nitrates, and other pollutants. 

Here is how its 5-stage filtration works to remove calcium and other pollutants.

  • Water passes from a 5-micron pre-filter during the first stage that traps large particles like dust, dirt, rust, etc. 
  • In Stage 2/3, two types of filters work; a carbon block and a granular pre-filter. These filters eliminate VOCs, chlorine and remove odor from water. 
  • Stage 4 removes harmful organic materials like lead, chromium, fluoride, arsenic, and other contaminants.
  • And the last stage is used to improve the quality of water; it improves the taste of water and removes the unwanted odor.

Leak Detection System:

Another good thing about this Express water filter system is its leak detection design that saves a lot of water. The emergency leak stop detector immediately shuts off water flow when it detects water leakage.

  • Easy installation and Maintenance
  • Leakage detection
  • Fast flow rate
  • Best to remove calcium
  • The quality of fitting pipes are not too good

3- Home Master TM Undersink Reverse Osmosis System

water filter for calcium

Here comes another durable water filter system that offers Reverse Osmosis filtration to eliminate harmful pollutants. It produces the finest water after filtration, and it can convert every tap water into ultra-pure drinking water.

With two decades of experience, Home Master designs innovative systems that are the most popular in the world. You can easily install, operate, and maintain this system. This is the beauty of the Home Master Water Filter system. 

All the components, fittings, and filters are certified to NSF standards, so you can’t question its quality.

Is It Effective To Reduce Calcium From Water?

Now comes to the point that either this system is perfect for removing calcium from water? The answer is yes; its reverse osmosis technology and 5-stage filtration remove up to 98% of calcium, chlorine, chemicals, heavy metals, and other contaminants from water. 

It’s not only effective for removing calcium but also perfect for eliminating TDS and micropollutants.

Compared to the other system, Home Master offers high-quality American-made Dow membranes that achieve 2X-3X more results.

Fast Water Flow

Another good thing that we like in this system is the 2X fast flow rate. It uses larger fittings and tubing to double the flow rate compared to traditional filtration systems. With a 2X fast water floor, you can easily fill cups or any pot. 

  • 2X fast water flow
  • Remove 98% of TDS
  • Easy to change filter
  • It takes a lot of space

4- iSpring RCC7AK-UV Water Filter

water filter for calcium water

iSpring RCC7AK-UV is a highly rated variant of the iSpring under sink water filter series. It is much more powerful than the rest of its competitors because of its 7-stage advanced water filtration. 

From filtration to Remineralization, each step performs its task 2X more efficiently than other filters. This time iSpring also adds UV light sterilization to kill micro-level germs and make your water ultra clean.

7-Stage Advanced Filtration

Luckily, this system comes with 7-stage filtration that removes calcium from the water and makes the watch 99% clean and contaminants-free. 

The other amazing thing that blows my mind is its Reverse Osmosis which is much more powerful than the rest of the systems. It not only makes water pure but also removes every type of viruses and bacteria from it.  

Alkaline Remineralization restores healthy minerals so you can drink water full of healthy nutrients. Plus, it also improves the taste of water and removes unwanted odor from it

Another good that I have seen in this system is water efficiency. Other water filter system uses 3.5-4 gallons of water to produce 1 gallon of purified water. But in the case of iSpring RCC7AK-UV, it produces one gallon of pure water from 3 gallons.

Filters Detail:

  • 3 Pre-Filters
  • PP Sediment Filter
  • Carbon KDF Filter
  • Carbon Block
  • 0.0001 microns RO Membrane
  • Affordable filter
  • Great U.S. based customer support
  • Filter customization
  • Effective Filtration
  • Need some DIY skills to install

5- AO Smith Whole House Water Filter System

Iron and calcium water filters

If you are looking for a whole house water filter system that can remove calcium from water, have a look at the AO Smith Whole House Water Filter System.

It’s Obsessively designed for clean and pure filtered water throughout your entire home. If you face hard water problems in your bathrooms and taps, it’s an effective option for you.

Ao Smith water filter system is made up of high-quality premium material, that’s why it gives you 6-years of warranty. But normally, this system can last for over 10 years. And during this lifespan, you don’t need any large maintenance, and it’s too easy to change the filter of this system.

Is It Effective For Water With Excessive Calcium?

Ao Smith Whole house system is specifically designed for city and well water that contains harmful contaminants. Its premium Sediment Pre-filter can remove 87% of chlorine, herbicides, pesticides, and more. 

When it comes to calcium, removing it can balance the amount of calcium in the water. All its filters are independently tested to NSF standard 42, so you consider it a worthy whole house filter. 

Note: Ao Smith Water Filter System can filter 600,000 gallons of water more than a traditional filter system.

  • The affordable whole house filtration system
  • 6 years of warranty
  • Remove 97% of contaminants
  • Not effective for removing TDS

6- 3M Aqua-Pure Whole House Water Filter

Best calcium water filter

Here comes another whole house water filtration system which is just like the AO smith system. But it offers advanced filtration technology that removes micro-level contaminants. 

This system offers 304 stainless steel heads that resist corrosion for piping connection. Because of its durable body and other components, it lasts for a longer time. But after every 12 months, you have to replace its filters to ensure clean water.

Thanks to its 10gpm high flow rate that can immediately supply pure water throughout the whole house. Sometimes the water flow rate reaches up to 20gpm, which is so amazing. 

This system offers the latest Sanitary Quick Change design that allows you to easily change the cartridge filter without contacting filter media.


Aqua-Pure whole house water filter comes with 3 different filter cartridges that remove all contaminants up to 5 microns. Plus, this system can remove 97% of chlorine, rust, dirt, and other organic pollutants from water.

I like its inhibition feature that uses polyphosphates in minute quantities to bind magnesium and calcium hardness minerals. This feature helps pipes maintain their normal flow and doesn’t allow any hard material to stick with pipes.

  • Easy installation
  • Durable material
  • High-quality pipes
  • Not effective for TDS
  • Filters quality can be improve

7- AFWFilters 5600SXT 48,000 Grain Water Softener

If you are facing a hard water problem in your home, AFWFilter is a perfect option that softens your water and removes calcium from it. 

It is specifically designed to reduce magnesium and calcium, responsible for limescale buildup in your pipe. So, we can say that it is one of the best water filters for limescale. 

You will also see a digital meter that measures that water flow which is pretty convenient. Similarly, the valve quality is amazing, and it looks more durable. 

This system comes with a corrosion-resistant Polyglass tank, a Fleck WS48-56sxt10, and a durable brine tank. Its brine tank can hold double the amount of salt than ordinary tanks, which means it needs low maintenance. 

Ion Exchange Filtration

AFW water filter system comes with advanced ion exchange technology. This exchanges the calcium and magnesium ions found in water with other ions like hydrogen or sodium etc.

Even this filter is suitable for seawater because it can remove 98% of calcium from the water. But it can’t remove TDS and other organic compounds because it’s just a water softener. You have to connect this system with the main water supply and then use a Brita water filter on tap to get pure and clean water.

  • High capacity
  • 100% Polyglass tank
  • Digital meter
  • No iron pre-filter required
  • Installation takes time

8- Aquasana EQ-1000 Whole House System 

You might be familiar with Aquasana, which is a big name with a solid reputation. If you are looking for an all-in-one water filter system, have a look at Aquasana EQ-1000 Whole House System. It not only removes calcium from water but also makes it 99% germs-free. 

Although it’s a pretty expensive water filter, it is worth it; you will pay for its worth and features.

It can filter 1Million gallons meaning you can use it for 10 years, and it needs very low maintenance. Just you have to replace pre and post-filters after 3-4 months for the best flow rate.

Best All-in-One Water Filter

No doubt, this premium system is perfect for eliminating germs and contaminants from water. The brand promises that this system will remove 97% of chlorine from water and make it clean and drinkable.

It also reduces other organic matter like; Lead, Mercury, Pesticides, VOCs, and more. This system offers 4 stage filtration that meets NSF standards. The high-grade and premium carbon filter efficiently removes harmful contaminants, and the 0.35-micron post-filter removes all the macroscopic pollutants.

The system not only eliminates germs but also improves the taste of water and removes odor from it. So you can use this water for cooking, coffee, tea, etc., to make them more healthy and tasty.

  • 10 years of warranty
  • Easy Maintenance
  • Excellent water flow
  • Effective for removing chlorine
  • Remove all types of bacteria
  • RO is not available even at such a high price

9- Tier1 Everyday Series 32,000 

Here is another digital water softener for whole-house use. Tier1 Water filter is manufactured in the USA, and its quality is amazing. If you are facing hard water problems because of excessive calcium, it might be a good option for you. 

As compared to the other whole house water softeners, Tier 1 is affordable. The system can process up to 32,000 grains of hardness before the regeneration cycle. So if you have a small family, it’s perfect for you.

Tier 1 filters efficiently remove calcium and magnesium from water, reducing 98% of hardness. So this water is beneficial for silky skin, hairs, cooking, cleaning purposes and extends the life of the laundry. 

But we have noticed that this system wastes some water during regeneration, but you will get outstanding soft water. 

Just like other water softeners Tier 1 uses an ion-exchange method to make water soft. This is one of the most effective and famous softening processes that gives useful results. But again, this is not something that can remove germs and contaminants from water, and it only makes water soft by removing calcium. 


  • 11.2 GPM flow rate
  • Operating pressure 20-120 psi
  • LCD
  • Fully adjustable cycle times
  • It comes with a Bypass Valve
  • Manual regeneration option
  • Effective water softener
  • Bypass valve
  • Fairly space-saving
  • Customer support is good
  • 48,000-grain capacity is average
  • Not for people who are on low sodium diets.

10- Frizzle Under Sink Water Filter System

If you are on a budget and looking for something that solves your water problem, then Frizzlife is the best water filter that removes calcium. You can easily install it under your bathroom or kitchen sink and make tap water pure and clean.

It only takes 3 minutes to install this filter system. You will get a complete step-by-step video tutorial for installation. You will get 3/8″ direct connect hoses, converter fittings, and other essential things in the package.

The filter comes with direct-connect hoses that make installation very easy. Secondly, it has a space-efficient design, and it saves a lot of space under the sink. Frizzle water filter eliminates unpleasant smell from water and improves its taste.

Removes 99% Of Contaminants

This under-sink water filter has unique technology that removes over 99% of contaminants from water and makes it ultra-clean. It comes with 2-stage filtration with a 0.5-micron membrane that removes all types of pollutants like; rust, chlorine, heavy metals, mercury, VOCs, and more. 

A good thing about this system is it leaves useful minerals behind that are beneficial for your health. Advanced filtration comes with an MK99 filter, and you have to replace it after 3-4 months for the best results.

  • Budget-Friendly
  • Remove 99% of pollutants
  • Easy installation
  • Tank quality could be better

11- AquaBliss High Output Revitalizing Shower Filter

Most people face hair fall and dry, itchy skin issues; these are caused by hard water. This water filter is specifically designed for water with a high amount of calcium (Hard water). 

The filter immediately removes calcium, magnesium, and chlorine from shower water and makes it perfect for bathing. Similarly, it’s also a good solution for water with excessive amounts of rust.

12 Stage water filtration is not only effective for removing chlorine but also reduces larger sediments, dirt, and dust. The plus point is this affordable water filter can last for 10,000-12,000 gallons, meaning you can use it for 5-6 months. 

AquaBliss uses premium and medical-grade filtration components that promote beauty from top to toe. 

This water filter works with every type of shower, and even if you are using a handheld shower, it’s good to go. You need to simply twist off your existing shower holder and twist on the AquaBliss shower filter. Moreover, it efficiently works with rain showers so you can take a bath under fresh water.

  • Simple installation
  • Work with every kind of shower
  • Affordable
  • Pretty bulky

Final Words

After going through the above list, I hope you get an idea of which water filter is best for you. Firstly, you should identify which water filter is suitable for you. 

We have done deep research before making this list, and all are the best water filters for calcium. You can buy any of them that suits your needs and requirements.

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