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Different Types of Water Filters & How They Work

The water that reaches our homes has an adequate quality for consumption. But sometimes a water filter is needed to improve it, as it can carry bacteria and viruses and toxic substances such as lead and fluorides, as well as lime or chlorine.

There are a wide variety of filters for water, even some specific for different pollutants. In this article, I tell you more about which water filter you can use.

Installing a quality water filter at home is not only a matter of health and hygiene. With them, we also help reduce plastic pollution.

Water filters and purification systems are responsible for removing sediment, solid, soluble, and invisible particles, microorganisms, and even ions from conventional water.

Without a doubt, this already gives you a minimum of security and confidence and should be more than enough reason. 

What are Water Filters?

The use of filters for water purification is more common in homes; this device allows cleaning the water that comes from the aqueducts.

In the filtration process, the device traps and removes particles that can harm people who drink water from the taps.

This purification technique has been used by ancient civilizations and has now been modernized for personal use.

Most filters use activated carbon, this manages to trap solid particles, and the liquid arrives purified at its destination.

When carbon becomes active, it reaches a temperature of 800 or 1000C; the heat acts as a magnet to trap the harmful particles. This will result in pure water without odors.

Types of Water Filters

Ceramic filters:

A cartridge with fossil silicon shells fits into any tabletop filter. The harmful particles are trapped by this substance but not 100%. Simple but ineffective, although better than nothing

Ozone purifiers:

Ozone purifiers are systems that give chemical treatment to water. By adding ozone, the oxygen molecules in the water are transformed from 02 to 03, which oxidizes the water.

This effectively slows down the action of viruses and bacteria. It is also possible to carry out a more conscientious work than that of chlorine, which disinfects, but to a lesser extent.

Its most widespread use is in desalination plants, generating a residual that disinfects and preserves its container’s water. Although there are already systems like eSpring, its ultraviolet light manages to add ozone to the water.

Ultraviolet purifier:

These use the frequency of UV rays. This is capable of disintegrating viruses, bacteria, and all kinds of microorganisms and germs commonly present in the water that comes out of the tap.

The water is cleaned of living beings without changing its composition, without any type of product, and without removing sediment or other solid components.

Will there be a system that combines technologies and includes ultraviolet light to eliminate viruses and bacteria? Yes, that’s why we want to talk to you about what we have found to be the best water purifier on the market.

ESpring water purifier system:

The eSpring water purifier system is today, and by far the most complete and healthy on the market, bringing together all filters’ aforementioned technologies.

Thanks to research carried out over many years; our professionals have been able to improve any existing water purification mechanism to achieve the definitive water purification system. 

Its cost is lower than that of many other systems.espring-water-filters. It does not waste water; it does not store it or stain it—organic carbon filter, with ultraviolet lamp and smart chip magnetic induction monitoring.

Without a doubt, the water is the best you will get: without viruses, bacteria, or other microorganisms, decalcified, with the exact mineralization and free of more than 140 contaminants.

Additionally, eSpring has 14 associated patents in America. It has also been awarded the Water Quality WQA Gold Seal and NSF International certification.

Infrared Filters. It is very helpful in softening the water. It is the best technology for those people who live in hard water areas.
Just like the alkaline filters, it also utilizes the light and heat to negatively charge the water.

Types of Water Filtration System

It is a fact that bottled water is costly as well as also causing environmental pollution. So you have to think smartly for yourself to drink the filtered water from the home’s water filtration system.

This section will discuss common types of water filtration systems from which you can choose what you find perfect for your home.


It is also called water ionization, which uses the water treatment method.

In water ionization or water electrolysis, there is a change in the molecular structure of water in order to produce both the antioxidant-rich ionized alkaline water. You can use this water for external uses such as disinfecting and cleansing.

  • In this process, the incoming tap water will pass through an internal filter.

When it passes through the filter, all the contaminants and chemicals are removed but leaving some water impurities.

So in the next step, the water will flow to a low voltage plate, which contains positive and negative electrodes, a water electrolysis process. 

Sediment filtration:

Sediment filtration is used in the home as well as commercially. However, it is the common and basic water filtration system that works in removing sediments such as dust, sand, rust, heavy metals, etc. 

Usually, people use this system in their homes as a pre-filter like activated carbon filter and reverse osmosis filtration system. This filtration system will prevent the clogging of large particles. 

In the sediment filtration, the water which contains different sizes of contaminants when to flow through the sediment filter, then all the particles with size larger than 5 microns will be blocked and accumulated on the surface of the sediment filter.

The contaminants which are less than 5-micron size will pass through the sediment filter freely. The sediment filtration’s good thing is that it is low cost and effective against sediments and large particles in water. 

Activated carbon block filtration:

If you are worried about having a bad odor and the chlorine smell, then the activated carbon block filtration system is just a blessing. It consists of fine carbon powder, which is held together and removed static by a binding agent. 

Activated carbon is produced artificially, giving it extra porosity capable of attracting and trapping the right water molecules, which we want to avoid drinking. 

These filters are normally used as a complement to improve another system, providing extra filtration, making the first screen.

They are very practical but ineffective if they are not accompanied by other technologies to eliminate viruses and bacteria that carbon alone cannot. 

It will also remove all the contaminants in water and reduce harmful elements such as volatile organic compounds, lead, and microscopic cysts.

There is a high porosity powder that gives more surface area and absorbs more contaminants in the water and prevents water from channeling. 

It is an affordable process to remove the impurities in the water as well as it has a great contaminant filtration capability.

Moreover, it will give you a great water flow rate as well as long filter life. However, it is customizable for different design applications.

Additionally, it will retain the essential minerals as well as also undergo minimal pH level change. 

Granular activated carbon filtration:

This type of filtration is also used to get rid of chlorine taste and smell. It is just like the carbon block filter system, but there are some differences.

As the name depicts, it consists of loose carbon granules which are bigger than carbon block powder. These granules offer weaker contaminants adsorption, but the rate of water filtration is higher. 

A granular activated carbon filtration system is inexpensive as well as has good contaminants filtration capability.

It will give you high filtration and flow rate as well as longer filter life. Most surprisingly, it does not require a power supply and does not contain any chemical additives.

Moreover, it is also easily used in conjunction with other filtration technologies for maximum filtration. 

The reverse osmosis filtration system:

This is one of the most popular filtration systems in which it utilizes a semi-permeable membrane with the help of which it will separate the inorganic contaminants from water and thus gives you the cleanest drinking water.

This semi-permeable membrane is also called the RO membrane. The most astonishing thing about reverse osmosis filtration systems is that you will get rid of about 99% of contaminants, including minerals from the water, except some volatile organic compounds. 

The membranes that, put in a spiral, act as a filter to retain and remove large amounts of salts and impurities from the water. They remove the harmful but also the vital, such as trace elements or minerals that our body needs. 

It is a fairly complex machine that uses three stages in which it works with water.

They have a large tank (if the water in the tank runs out, you have to wait to drink), and the flow is generally obtained from a water pump. 

Therefore, despite offering good results, it also presents more options when it comes to failure, in addition to having high maintenance, and it is not exactly a cheap system. 

Osmosis and reverse osmosis systems are already a bit outdated, they consume a lot of resources.
They waste huge amounts of water, they spoil and get dirty very easily, they require expensive maintenance, and also the water is not entirely healthy.

Although it is always better to drink osmosis than from the tap or from the plastic bottle! 

On the other hand, we know very well that a high intensive filtration system is costly.

People will usually go towards reverse osmosis, but it filters the water at a slow filtration rate. So to solve the problem, many reverse osmosis filtration systems come with a pressurized tank to store the filtered water. 

The good thing about the reverse osmosis filtration system is that it is the strongest filtration system against the important contaminants present in water, which are to be removed.

You will easily remove many dissolved solids such as calcium, lead, iron, mercury, bacteria, as well as many contaminants.

Moreover, it will give you an extra-long life span of 23 years due to being washed constantly. So if you want to get the pure and clean water, then you must go for this filtration system. 

Distillation filtration system:

Distillation is an old method of filtering the water, but it is still not as popular as the activated carbon filter and reverses the osmosis filter.

However, it is also an incredible process for purifying the water. First of all, there is a water distiller which evaporates water by heating it to the boiling point using electrical energy.

After that, the steam is captured and then condensed into pure distilled water in liquid form. During the process of vaporization and condensation, there are some contaminants that are left behind, but after that, they are discarded.

Keep this thing in mind that the water distillation process takes some time. Also, a small amount of water is distilled, which makes this application limited, especially for the industrial processes. 

Distillation systems:

This system is quite simple, but it is really inadvisable with the innovation that we have today. Still, we tell you how it works; it is very simple.

The water evaporates and condenses again to separate the unsuitable elements. They require a lot of energy and time to obtain distilled water, and distilled water is not good for consumption. 

Ion exchange:

It is a fantastic method of removing the undesirable dissolved ions from water.

Most amazingly, they are then replaced with other signs with an electrical charge from the ion exchange resin. This resin is called IX vessel, and when the water passes through this vessel, then the chemical reaction happens either in batch or continuous mode.

Many people are familiar with the ion exchange process, as well as their types.

So there are two types of ion exchange methods such as cation exchange for positively charged ions and anion exchange for negatively charged ions. 

It is a water softening process in which IX resin, which has positively charged sodium ions, will capture positively charged calcium and magnesium ions in water.

Therefore, it will produce the sodium ions in the water for exchange. 

But when we go towards the deionization process, then it will either exchange positively charged ions or negatively charged ions. 

Lastly, there will be an ion exchange process in which the negatively charged ions in the water, such as nitrate, uranium, sulfate, arsenic, fluoride, etc. are removed and then exchange with other negatively charged ions such as chloride ions. 

Ultraviolet disinfection:

It is an advanced type of water filtration system in which many microorganisms such as protozoa, viruses, cryptosporidium, cysts, E Coli, infectious bacteria, are removed in the water. 

You can use this process for cleaning the water from lakes, streams, rainwater, and private wells.

Most surprisingly, ultraviolet disinfection is very powerful against chlorine-resistant microorganisms, such as cryptosporidium.

So you will get rid of many diseases which are caused by microorganisms present in the water. 

In an ultraviolet disinfection system, you will be able to kill 99. 99% of the harmful organisms present in the water.

Additionally, it is a quick and reliable process that does not require much maintenance.

It is very simple to use as well as has a chemical-free solution for microorganisms. Moreover, it comes with low energy consumption and low operating cost. Most amazingly, it is safe to use as well as environment friendly. 


In ultrafiltration technology, we use hydrostatic pressure to force the water towards a submicron semi-permeable UF membrane.

That semi-permeable membrane is usually made from 0. 01 to 0. 5-micron hollow fiber. So with this membrane, many of the contaminants are removed from the water.

Surprisingly, through this process, we will be able to remove the microscopic contaminants such as viruses and bacteria, parasites, etc. The good thing is that while removing these contaminants, essential minerals are retained in a good way. 

Activated alumina filter:

In this system, we have highly adsorptive and porous aluminum oxide, also called bauxite.

Many harmful elements, such as arsenic, fluoride, selenium, and tellurium are removed from the water in this system. Many people are using this system in their homes to treat fluoridated tap water.

Before going towards activated alumina filters, it has to go towards an initialization process first of all. In this process, there is backwashing and chemical treatment on the activated alumina media. 

Types of water filters

Many types of water filters are available in the market from which you can make your water pure, but in this section, we will discuss some of them. 

Water filter pitcher:

The most common type of water filter is a water filter pitcher. We are very thankful because of their low cost and portability.

It consists of two parts where the upper part is a filter, which is mostly filled with activated carbon. So when you pour water in it, the filtered water will drop down to the lower part of the container.

So you will get the pure water from here. Most amazingly, you can use this water filter system to get the water for cooking and drinking. 

Faucet water filter:

As you can see from its name, you can install it right on your faucet. It is a mini device that is very active in removing the contaminants in the water right before it comes out.

So you will get the fresh water for cleaning the utensils, washing, as well as cooking.

Just like a water filter pitcher, it is also a cheap water filter and is a good choice when you are thinking of using it in your home. This system is also good in improving the smell and taste of the tap water. 

Showerhead filter: 

You can also understand from its name that this filter is installed on your shower head so that you get filtered water for your shower.

You can use this water filter for areas where the water contains a high amount of fluoride and chlorine.

We all know that these chemicals cause dryness and irritation on sensitive skin. So you must install the showerhead filter in your washrooms to get the filtered water. 

Countertop water filter:

If you do not want to keep filling and emptying the jug, then you must go for a countertop water filter because here, you are purifying your tap water.

The countertop water filter is connected to the faucet where it purifies the water whenever you turn on the tap. These filters are small in size; however, they take some space on your countertop. 

Under the sink water filter:

As the name depicts, the under sink water filter is properly installed under your kitchen sink. It is a fantastic water filter that removes the bacteria and pollutants, so the water becomes safer.

However, the under sink water filter has a drawback that it is large in size as well as expensive. It is also not very portable.

But the good thing about the under sink water filter is that it can process a large amount of water at a much faster rate compared to other water filters such as countertop devices or faucet filters. 

Whole house water filter system:

Most amazingly, the whole house water filter system will clean all the water running in your home’s taps.

They are not installed separately to the taps or faucets but are typically installed right at the water tank.

So the whole water filter system is connected to the main pipe purifying the water there and then distributed to different areas in the house. 

FAQs Related to Types of Water Filters

Q 1: What type of water filter is best?

Ans: However, there are many types of water filters present commercially but reverse osmosis filters is the best one as it can remove most of the inorganic particles and the contaminants. 

Q 2: What type of water filters are available commercially?

Ans: There are many types of water filters available commercially, such as reverse osmosis filters, alkaline ionizer, activated carbon filters, UV filters, infrared filters, etc.

Q 3: What is the best method to filter water?

Ans: There are many methods to filter the water; however, when the reverse osmosis is not available, you can go for other purification methods.

Boiling is an easy method as well as cheap to purify the water. Then we will go towards filtration, distillation, and chlorination. 

Q 4: How long do you need to replace your water filter cartridge?

Ans: The water filter cartridge is specially designed, but usually many cartridges last between 3 to 6 months. There is a service life of the water filtration cartridge, which shows the time at which the cartridge remains efficient in removing the contaminants. 


There are different types of water filters on the market; the most used are: reverse osmosis water filter, ultraviolet light filters, and carbon filter. There are many advantages to choosing a good water filter or a quality purifier system

Obviously, whoever decides to install a cleaning system or a water purifier, what they are looking for in the first instance is to take care of their health.

Water filters and purification systems are responsible for removing sediment, solid, soluble, and invisible particles, microorganisms, and even ions from conventional water.

Without a doubt, this already gives you a minimum of security and confidence and should be more than enough reason.

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