Best Purifiers in India

Are you trying to get an idea for the best water purifier in India for your home? You have landed at the right web page to have the right info

Water from natural sources like rivers and lakes get polluted with the human, plant, animal, and industrial waste.

Water bodies do add chlorine or fluorine to the groundwater to get rid of harmful viruses and bacteria. Despite these efforts, our tap water might have some harmful chemicals.

Therefore, having the best water purifier should be a top notch urgency or priority for every home in India.

To put it simply, If the TDS levels in your water source are above 300 ppm or you get water from multiple sources, you need to go for an RO water purifier.Most RO water purifiers has the combination of UV, UF filters to ensure that the water is 100% free from contaminants.

terms like RO, UV, UF, TDS, Mineralizer etc might be new to you .We recommend you to read the Water Purifier Buying Guide at the end of the article to get in-depth knowledge about all the water purification technologies.

Kent Supreme Plus 2020 RO + UV + UF + TDS Zero Water Wastage

Kent water purifiers are the hot favourites for Indian homemakers. Kent has a water purifier model suited for almost all needs and households. The Kent Supreme Plus 2020 is a comprehensive product blessed with great features.

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Zero Water wastage
TDS Control system
RO + UF + UV + UV_LED
Eight-litre storage
Fully automatic
Wall-mounted design

Best Purifiers in India in 2021

Not only does it delivers pure and mineral-rich water, Kent Supreme Plus 2020 water purifier does not waste any water. The Zero Water Wastage Technology recirculates the rejected water to the overhead tank using its pump.

This water purifier follows a multi-purification process, including RO, UV, UF, and UV_LED, to deliver an absolutely pure water to the household. It is the ideal purifier to treat tap, and municipal corporation water.

The in-built TDS controller helps to replenish essential minerals lost during the RO purification process. , This water filter improves the taste of water considerably by removing bacteria, viruses, and TDS

The In-tank UV disinfection feature keeps the water purity in the storage tank for extended periods. The purification capacity of 20 L/hr and the storage tank capacity of eight litres are decent features that provide proper supply of pure water even in the absence of electricity.

The Kent Supreme Plus 2020 is a upto date water purifier in most respects as it features computer-controlled and automatic operations. Those features include Filter Change Alarm and UV Fail Alarm.

Pros
Good purification process
Best for houses located in coastal areas, industrial belt
Suitable for a family of four

Cons
Filter replacement costs are additional expenses.
Comes in white colour

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HUL Pureit Copper+ Mineral RO + UV + UF 7-Stage water purifier


Copper metal has water purification features.You must have heard it from our grandparents about how forefathers used copper vessels for storing water. HUL Pureit uses the same approach in designing this water purifier.

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Capacity of 8 liters
RO+UV+MF with Mineralizer facility
Charges RO water with 99.8% pure copper
Can be used for TDS upto 2000ppm
ABS Plastic Food Safe tank
One year warranty

This water purifier gives the health benefits of copper in 100% RO purified water. Thus, you can have one of the best water purifiers for households to ensure an uninterrupted stream of pure and healthy water for your family.

Best Purifiers in India in 2021

The water purification has a seven-stage process that includes the use of,

Pre-sediment filter to remove large impurities
Pre-RO activated carbon filter to eliminate bad odour and organic contaminants
Wire mesh filter for trapping the significant soluble pollutants
RO membrane for carrying out 100% water purificationhttps://amzn.to/3mXSbcS
UF membrane for removal of the traces of any TDS that manage to seep through
UV reactor for getting rid of bacteria, viruses, and other microorganisms
Post-RO activated carbon filter to increase the taste of water

This water purifie has a dual water dispensing option. You get pure RO water and copper-charged RO water, thereby enjoying the medicinal benefits of copper.The system einfuses the right amount of copper in every glass of water.

The water purifier is an intelligent device, as it smartly senses and schedules auto cleaning, thereby providing supply of fresh copper at all times.

The appliance has 8L water storage tank that will prove adequate for an average Indian family.

HUL Pureit water purifier has additional features like Double Purity Lock that ensures the machine does not dispense a single drop of unsafe water.

The Advance Alert System alerts you 15 days in advance before the expiry of the Germkill Kit. The Auto Shut-Off feature shuts off water purification and supply after the expire of the Germkill Kit.

Pros
copper purification
The 7-stage water purification process
Automatic shut off feature

Cons
Wastes water during the RO purification process

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Eureka Forbes AquaSure Amaze 7L RO+UV+MTDS Water purifier


Eureka Forbes has a world renowned reputation for being a market leader in consumer appliances. It has won the trust of more than 15 million families in India.

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Advanced RO + UV + MTDS purification
Suitable for use for TDS levels 200 to 2000
The storage capacity of seven litres
Food grade plastic
LED indicators

Eureka Forbes has made this water purifier product primarily for the urban clientele. The 7L water storage tank is ideal for the nuclear Indian family.

Best Purifiers in India in 2021

The water purifier has a multi-stage purification process including RO, UV, and MTDS to deliver of 100% pure water. The UV water purification eliminates disease-causing bacteria, thereby making water healthy for drinking.

The MTDS feature replenishes essential minerals like calcium and magnesium that get eliminated during the RO water purification stage. It adjusts the water taste according to the quality of source water.

This water purifier has a durable cartridge capable of lasting for up to 6000 litres. The smart indicator feature will alert you when the cartridge is due for replacement. The smart LED indicators for tank-full and power-on status are good additions in its feature

This water purifier is eco-friendly as it features an Energy-saving mode. It switches off automatically when the water tank is full.

The sleekdesign fits with your kitchen beauty . The best thing about this product is its flexible installation. You can mount the water filter on the wall or place it on the kitchen counter comfortably.

Pros
Great after-sales service available
Multi-stage purification
Durable cartridge

Cons
7L tank capacity is inadequate for large family of more than 5

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AO Smith Z9 Green RO 10L RO + SCMT Water Purifier


AO Smith is a renowned international brand in water purifiers. This is also available in the Indian market at affordable prices.


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Key Features

Capacity of 10 liters
RO purification with mineralizer facility
Can be used for TDS upto 2000ppm
Hot water at the press of a button
Advance Water Recovery Technology
One year warranty

One of the higlighting features of AO Smith Z9 water purifier is the patented Advance Recovery Technology.

This technology allows the water purifier to save two times more water than the standard RO water purifier. It also helps in minimum wastage of essential minerals during the RO purification process.

Best Purifiers in India in 2021

The 8-stage water purifying process has RO + SCMT technology along with MIN-TECH. SCMT Technology provides secondary microbial purification for ensuring no recontamination of pure water by harmful microbes.

MIN-TECH adds back the essential minerals that get lost during the RO purification process. Thus, AO Smith Z9 Green is definately among the top 3 water purifiers and can be kepti in the category of best water purifiers in India in 2020.

The additional benefit of this water purifying system is that you can have a choice between obtaining pure water at 45C and 80 C at a press of a button. This hot water is ideal for cooking, whereby you do not have to heat the water again.

With AO Smith Z9 Green water purifier, you do not have to search for the controls in the night as this purifier has a Night Assist feature to locate the purifier. The digital display gives useful information such as water temperature, full tank indication, and filter alerts.

The water level indicator is a good feature to help you judge the level of pure water in the 10L food-grade water storage can. Another unique feature is the presence of a drip tray that ensures little or no water spillage around the place where filter is mounted or kept.

The aesthetic looks of the AO Smith Z9 Green water purifier make it one of the top purifiers for water with TDS levels up to 2000ppm.

Pros
Hot and cold-water options
Aesthetic design
Less water wastage
Low power consumption

Cons
Water refill starts only when the water level reaches 50% capacity

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LG Puricare WW150NP RO + UV Water purifier

LG is a well known consumer durables manufacturer in India. The popularity of LG air conditioners, TVs, and refrigerators should be benchmark and proof that Indian consumers trust LG to deliver great products. . This LG Puricare water purifier falls in the same category of performance as water purifier.

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Key Highlights

Capacity of 8 liters
100% RO purification
Can be used for TDS upto 2000ppm
Dual Protection Stainless Steel Tank
One year warranty

The WW150NP water purifier has a dual protection stainless steel tank that maintains the freshness of water at the same time reducing the growth of bacteria and algae.

Best Purifiers in India in 2021

This water purifier has a 5-stage RO water purification process that includes the use of a UV lamp to remove harmful germs and bacteria from RO purified water to make it safe for drinking.

At the same time, it also maintains the mineral content in the purified water all the times.

The most significant feature of this water purifier is the Stainless-Steel Certification that proves that the water storage tank has 94.4% lesser E-coli growth in 24 hours as compared to plastic and fibre tanks.

This water purifier purifies by advanced RO water purification technology that removes viruses and bacteria during the purification process. This avoids the need for a UV lamp at the purification stage.

However, the UV lamp proves usefulduring the water-preservation phase, thereby ensuring double protection. The UV purification cycle starts every six hours.

This water purifier employs the most hygienic way of purifying water using digital sterilisation without any harmful chemicals. However, one should ensure to used LG-certified filters and genuine spare parts to retain the efficiency of the product.

Other useful aspects include a filter change indicator to alert you whenever a change of filter is due. This LG water purifier is certainly in the top 5 water purifier and can be kept in best water purifiers under Rs 20,000 category.

Pros
Dual protection water purifying system
Does not mix impure water to control TDS levels
One of the best water purifiers for groundwater
Excellent design

Cons
Does not have UV at the purification stage

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Kent Grand Plus 9L RO+UV+UF+TDS Zero Water Wastage


Kent Grand Plus ZWW is another great water purifier model that uses patented ROTM technology to for 100% safe water for drinking. It has a multi-stage purification process to make water potable.

Key Highlights

Multiple purifications including RO, UV, UF, and TDS
Zero water wastage
TDS Controller
UV LED protection in the storage tank.
The capacity of nine litres
Wall-mounted design

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The multiple purification technologies use RO to remove TDS and other heavy impurities like lead, arsenic, and antimony from source water. UV technology eliminates bacteria and viruses. TDS controller improves the water taste by replenishing essential chemicals.

Best Purifiers in India in 2021

Generally, RO purification leads to water wastage. This product uses Zero Water Wastage technology to recirculate the rejected water to the overhead tanks for alternative uses like watering plants, utensils, and flushing toilets.

This water purifier has a nine-litre storage tank to cater to the conveniences of an Indian family of four persons. The 20 L/hr water purification rate is excellent.

The storage tank has a separate UV-LED lampso that that the purified water does not get contaminated by bacteria. Therefore, you get 100% pure water all the time.

This water purifier is a good water purifier in places having high TDS levels. People living in coastal areas and depending on borewell water supply would like this water purifier the most.

Some of the other good features are the presence of UF and Activated Carbon filters to eliminate organic impurities and improve the taste of water.

The wall-mounted design occupies less space and adds to the kitchen decor by blending beautifully with other kitchen appliances.

Pros
Optimum use of rejected water
good water purification
Maintains water purity even during storage

Cons
Recurring maintenance costs
only in white colour

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Faber Galaxy Plus RO + UV + UF + MAT 9L water purifier


This Faber Galaxy water purifier is also one of the better water purifiers available in India under 20000 budget category because of its 8-stage filtration process.

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Capacity of 9 liters
RO+UV+UF+MAT
Can be used for TDS upto 2500ppm
Mineral Addition
Food-grade plastic storage tank
One year warranty

The purification process includes a UV filtration process to for removing harmful germs and bacteria at the final stage of water purification. This enhanced level of water purification makes it best water purifiers available in India under Rs 15,000.

Best Purifiers in India in 2021

The highlight of this water purifier is its elegant design that blends well with kitchen décor and makes the water purifier look a part of the modern kitchen.

The RO membrane is an advanced product that can handle water with TDS levels as high as 2500ppm. Therefore, it can be qualified as one of the best water purifiers for all sources of water, including groundwater, borewell water, and municipality-supplied drinking water.

The Faber Galaxy Plus water purifier has h an 8-stage purification process that includes RO, UV, and UF processes, thereby delivering high-quality pure and hygienically safe water.

This water purifier has the additional advantage of MAT technology for providing the taste of purified RO water. This Mineral Addition Technology helps in adding essential minerals that get lost during the RO water purification process.

Another highlight of Faber Galaxy Plus water purifier is the Copper Guard technology to remove foul odour from the pure water. The high storage capacity of nine litres is adequate enough for the entire family.

The ABS Food Grade Plastic tank also maintains the purity level of water during its storage.

Pros
Fabulous design enhances the kitchen look
8-stage filtration procedure including Ro, UV, and UF
Can handle TDS levels up to 2500 ppm

Cons
Service Quality can be improved in certain locations

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Eureka Forbes Aquaguard Marvel 8L RO+UV+MTDS

Aquaguard is a renowned model loved by Indians. Eureka Forbes is one of the well known companies to manufacture water purifiers of high-quality in India. This Aquaguard Marvel 8L model is one of the bestsellers today.

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Multi-stage purification including RO and UV
Eight litres storage capacity
Active Copper technology
Taste Adjuster (MTDS) controller
Mineral Guard Technology

It is well known fact that copper has water purification properties. The Aquaguard Marvel water purifier harnesses this fact to bring out the best qualities of copper to assist in water purification. The Active Copper technology performs by infusing copper ions in the water to purify it.

Best Purifiers in India in 2021

Besides the multi-stage purification process involving RO and UV, this water purifier has Mineral Guard technology to replenish essential minerals like magnesium and calcium to deliver healthy drinking water.

The UV e-boiling technology eliminates bacteria and viruses to provide pure and healthy water as boiled for 20 minutes.

This water purifier is good for purifying all types of water, irrespective of its source. The Advanced Taste Adjusted Technology improves the water taste considerably.

The source water purifies by multiple purification stages like I-filter, Chemi-block, mineral-guard, MTDS, RO cartridge, UV e-boiling, and Active Copper to emerge in its purest form.

The I-filter eliminates suspended particles, whereas the Chemi-block filter reduces excess chlorine and removes organic impurities while absorbing the bad taste and odour.
This Aquaguard Marvel water filter has aesthetic looks. The large storage capacity of eight litres delivers pure water supply for a family of four persons consistently.

Pros
Multi-stage purification process
Copper purification technology is unique tech.
A good design with a metallic finish

Cons
Installation costs are additional.
Few customers have complained of bad after-sales service.

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Eureka Forbes Aquasure – RO + UV + MTDS Water Purifier

Eureka Forbes is among the best manufacturers of water purification appliances in India. This model from Eureka Forbes has state-of-the-art purification processes like RO, UV, and MTDS, thereby supplying pure and hygienic water to its users.

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Capacity of 6 liters
RO + UV + MTDS
Can be used for TDS upto 2000ppm
Food-grade plastic storage tank
One year warranty

The Aquasure model employs multi-stage purification that is a combination of RO and UV.

This Water purifier has long-lasting cartridges that can sustain its quality for more than 6000 litres. During the RO water purification process, the essential minerals get lost as well as the heavy metal contaminants. Therefore, the resultant water is pure but has no nourishment.

Best Purifiers in India in 2021

The MTDS feature replaces the lost minerals with essential salts like magnesium, calcium, and potassium to enhance the hygienic value of water.

This Aquasure water purifier has a large storage tank having a capacity of seven litres that would be good enough for a regular Indian family.

The energy-saving mode cuts off the supply of power to water purifier when the storage tank becomes full. It starts the device again when the water goes below the minimum level. Therefore, it is known as one of the best water purifiers that can save power.

It has a sleek design that adds a lot of glamour to your kitchen. The water purifier design is good enough to place the water purifier on the kitchen countertop or hang it from the walls.

Eureka Forbes has good service network, therefore it becomes easy to service the appliance in case you have problems with this brand.

Pros
Good service network
Impeccable performance
best water purifiers under Rs 10,000

Cons
this appliance wastes water during its purification

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Why do you need a water purifier?

The water that is available in our taps is not exactly the best one to drink directly.

This tap water contains all kinds of contaminants one can imagine.

It is the reason why many people boil water before drinking.Boiling kills the germs,viruses and bacteria from the water. At the same time it also kills the taste and flavour but does not remove salt from the water.

Therefore, one can start using water purifiers that can deliver high-quality drinking water that tastes good as well.

Now we know why water purifers are needed. Let us now concentrate on what to do before purchasing your water purifier.

Test the tap water

there are two ways of testing the tap water. One is to use your natural biological tasting senses, and the other is a scientific way with the use of a TDS meter or what we refer to as a water testing kit.

The natural way is to smell and taste the water. If it smells or tastes awful, you should go ahead and read the rest of the article.

At the same time, if it smells and tastes good, what should you do? You should still go ahead and read the article thoroughly.

Water that Smells And Tastes Good Is not necessasirily the best water to drink.

Tap water in India contains soluble and insoluble impurities. Despite the municipalities purifying groundwater, the water can pick up contaminants on its way to your home.

It has to transport through pipes and tanks. Pipelines and tanks can be corroded. They can also have a mineral build-up. Both of these factors affect the quality of water.

Secondly, groundwater might have impurities like arsenic, antimony, lead, and so on. It can also contain Totally Dissolved Solids (TDS – we will be using this term frequently throughout the article).

TDS can comprise organic and inorganic salts including calcium, magnesium, potassium, chlorides, bicarbonates, and sulphates. Thus, it is good to use a TDS meter to determine the extent of TDS.

Where can you test the water?


You do not have to go to a laboratory to conduct the test. The TDS meter is a simple tool to use. It gives reasonably accurate results that should enable you to decide the type of water purifier you should have in your home.

How do you use the TDS meter?

A digital TDS meter should not cost more than a few hundred rupees. Invest in one, as it will prove useful to you for life. Here is how you use the TDS meter.

Step 1 – Determine the temperature of water in the following way
Switch on the TDS meter and press the TEMP button.
Place the meter inside the glass of water and note down its temperature.
Return to the TDS mode by pressing the TEMP button again.
Step 2 – Measure the TDS level
Remove the protective cap of the TDS meter and turn the TDS meter on.
Immerse the TDS meter in the glass of water up to the maximum immersion level marked on the device.
If there are any bubbles in the water, stir it gently to get rid of them.
Wait for about 10 seconds and allow the reading to stabilise.
Press the HOLD option and remove the device to note down the reading.
Now, you have the reading. What should you do now? This table will give you a good idea about what the reading conveys.

TDS Level Reasons for acceptability or Non-acceptance


Less than 50 Water with such a low level of TDS does not contain any essential minerals. It will be tasteless. It is not an acceptable range.
50 to 150 It is an acceptable level. However, if you have an RO water purifier at home, ensure that the TDS level is not below 80
150 to 200 This level is acceptable. Hospitals usually have this level of TDS in their water supply. It is ideal for maintaining cardiovascular fitness
250 to 350 Most of the Indian homes have tap water in this range. It is an acceptable range
350 to 500 BIS guidelines state that TDS levels up to 500 are acceptable.
500 to 900 As this level is not acceptable, use an RO water purifier with TDS controller/mineraliser.
900 to 1200 It is better to use an RO water purifier of good quality with TDS controller.
1200 to 2000 It is a highly unacceptable range. You will need an excellent RO water purifier that can handle water with TDS levels up to 2000.
Above 2000 Most of the RO water purifiers in the market cannot handle such a high level of TDS.
We shall now look at the type of water purifier you should buy depending on the TDS level in the source water.

Now, you know the TDS level as well as the water quality.

You should go ahead and purchase the ideal water purifier. Let us now discuss what these specific terms, TDS, UV, UF, RO, and so on signify. It will help you understand the basics well.

TDS – Totally Dissolved Solids

TDS can be in various forms. We shall now segregate our population into three distinct types

Rural Population

People living in villages and relying on natural sources of water Village folk usually do not get piped water supply from municipalities. They rely on natural sources of water such as wells, borewells, rivers, and lakes.

These people use well water to cater to all requirements, domestic and agricultural.
If you venture into a village, you will find domestic animals like cows, buffaloes, goats, etc sharing the well water with humans. Hence, there can be high levels of contaminants.

Secondly, industries in the locality of the villages also dump their toxic wastes into the rivers and lakes.

The groundwater resources also get polluted due to the release of harmful metals like lead, arsenic, mercury, and so on. All these impurities, visible and impurities constitute TDS.

However, please note that not all TDS is bad. The groundwater has useful minerals like calcium, magnesium, and potassium, but the harmful TDS makes it necessary for village folk to invest in a good-quality RO water purifier and with a TDS controller.

Urban Population

Those having access to piped water supply from municipalities. Many people have borewells in their homes.

Such households have an advantage over the rural people because the municipality does the job of purification of water before distributing them to the residents through pipes (underground or over the ground).

Municipalities use RO water purification techniques to remove TDS and other contaminants. However, the RO-purified water collects impurities during transit from the municipal tanks to the homes.

Usually, the pipes supplying water to the residents are subject to corrosion, leaks, and rusting. Therefore, these homes get water with visible impurities.

A UF and UV water purifier should be enough to purify the water, as the municipality has already taken care of RO.

Homes depending on borewells should determine the TDS levels before choosing the type of water purifier. It is always good to go for RO + UV + UF water purifier to be safe on all counts.

Coastal population

India has a vast coastal area with millions of people depending on salty groundwater for their consumption needs. This water has a high level of TDS. Therefore, they should prefer the RO + UV + UV water purifier with TDS controller or mineraliser for domestic consumption.

Lets now understand the different types of water filtering methods such as UV, UF, and RO. The concept should be clear before you decide to purchase the water purifier of your choice.

Different Types of Water Purification Systems

Gravity-based water purification systems

Aged people will recall the simple water filter that used to be common in all households. It used to consist of two containers placed one over the other.

The top container used to have water filtering candles. One used to fill this container with the source water. The water seeps through the fine holes present in the filtering candles into the container below.

This water purification system is an example of gravity-based water purification. It is a kind of UF process. UF stands for Ultra Filtration. The Modern-Day UF Filters Have
such a membrance that can trap visible as well as ultrafine contaminants to provide good water quality.

Such water filters are best in areas where the TDS levels are less than 500. These water purification systems do not require any electricity for its functioning.

Ultra-Violet Chamber water purification water systems

The turn of the twenty-first century saw the introduction of ultraviolet (UV) chambers as an effective method of water purification. UV purification is an effective method, as it can remove harmful viruses and bacteria.

The Water Passes Through A UV Chamber That Serves Its Purpose By Killing The Germs And delivering healthy water to drink.

Such water purification systems need electricity to work. Secondly, there is a disadvantage because the UV chamber can kill the germs but not destroy the viruses and bacteria. This would not affect your health in any way.

However, it is better to pass such water through a UF membrane to remove the remnants.

Reverse Osmosis – RO water purifier

Osmosis is a natural process where a liquid in an area with a lower concentration tends to move towards an area of higher concentration through a semipermeable membrane.

A simple example of osmosis is when you place a potato inside a glass of water. After some time you will find the vegetable swelling up because the water from the glass seeps through inside the potato.

The potato has a high concentration of starch. The potato skin acts as a semipermeable membrane. The significance of the semipermeable membrane is that it does not allow the reverse flow of water under normal circumstances.

Reverse osmosis is reversing the process of osmosis. In this process, water moves from an area of higher concentration to that of a lower concentration through a semipermeable membrane.

RO Water Purifiers Work On A Similar Procedure Where The Impure Water With A Higher TDS Level Passes Through A Semipermeable RO Membrane.

The membrane has millions of small pores through which the salts cannot pass through. The water molecules are small enough to seep through thereby ensuring the elimination of TDS.

However, this process requires the application of pressure. Hence, RO water purifiers come with built-in pumps to quicken the process.

We shall now discuss the working principle of an RO water purifier.

RO Water Purifier – Working principle

The RO water purifiers available in the market employ a six-level or seven-level water filtration process.

Sediment Filter

The sediment filter is the first line of defence in an RO water purifier. Usually, the sediment filter is placed outside the RO water purifier machine.

The sediment filter works in a way similar to that of the erstwhile candle filters we had in the late 1980s. The water from the source passes through this sediment filter that takes care of the large impurities.

Hence the water loses much of its turbidity before entering the RO water purifier. It serves a dual purpose. On the one hand, it eliminates the heavy impurities and reduces the load for the RO water purification process. As a result, it enhances the life of the RO membrane.

Pre-Activated Carbon Filter

The RO water purifier system has the water passing through an activated carbon filter to remove the organic impurities. This filter also helps by removing the unpleasant taste of water.

Ultra-Filtration Stage

The UF is the third stage of filtration. The water now passed through the UF membrane to trap soluble contaminants.

The UF membrane consists of tiny pores that can trap microscopic pollutants. Thus, the water becomes relatively free of soluble solids after passing through the UF stage.

Reverse Osmosis Stage

The RO purification is the crucial stage in the purification process. The UF-purified water passes through the RO membrane, thereby resulting in the elimination of all TDS.

This purification process removes the toxic molecules of lead, arsenic, mercury, and other contaminants. It also ensures to remove TDS by more than 99%. Thus, you have TDS-free water emerging from the outlet.

The RO process has a disadvantage in that it wastes a lot of water while squeezing out pure water from the water source. This water flows out of the machine through a separate outlet.

Ultraviolet Purification

The RO process takes care of TDS and other metallic impurities. It also destroys some of the larger microorganisms, as well.

However, organisms having size less than the pores of the RO membrane pass through the filtration process. This RO-purified water then passes through an ultraviolet chamber that destroys the viruses and bacteria from the water.

Hence, you have purewater at the end of the fifth stage of purification.

Post-activated carbon filter
The UV process removes viruses and bacteria by killing them. However, it cannot dispose of the dead bodies of these viruses. Secondly, some organic impurities manage to pass through the process.

Hence, the water transports through a Post-activated filter to eliminate these dead bodies and improve the taste of water by getting rid of the organic pollutants. The primary function of this filter is to eliminate the bad odour from the RO purified water.

TDS Controller – Mineraliser
RO purified water has low levels of TDS. In the process, water loses essential salts like calcium, potassium, and magnesium, among others.

TDS controller replenishes these salts and balances the pH level of water. As we know that pure water is tasteless and odourless. Hence, the TDS controller serves to balance the pH levels and make the water tasty and healthy to drink.

The mineraliser does a similar function as the TDS controller. It supplements the mineral content lost during the RO purification. The mineraliser is a better alternate than the TDS controller because it replenishes the specific minerals.

Best Water Purifier – Frequently Asked Questions

Which water purifier brand offers the best after-sales services ?

In this era of customer service, all water purifier brands offer good after-sales services.

However, it depends on many factors such as availability of service centres in your city, accessibility to spare parts, and so on. The best way to verify these factors is to do a local search on Google or go through Just Dial reviews.

Checking by the official websites or e-commerce websites where customers post their reviews is also a good way of ascertaining the after-sales service facilities of water purifier brands.

What is the annual maintenance cost (AMC) for an RO water purifier?

Most of the top water purifier brands offer regular AMC services. The rates depend on many factors. Usually, it is in the range of around Rs 4,000 per annum. However, it is better to verify from the water purifier AMC provider.

This AMC includes the cost of replacement of the various filters like RO membrane, UV and UF filters, activated carbon filters, and sediment filters.

You have to replace these filters on an annual basis to extract optimum performance from your water purifier. Refer to the actual specifications

What are TDS Controllers / Modulators?

TDS controllers control the proportion of TDS in the water coming out of the RO water purifier. Why do you need these controllers?

The RO purifiers reduces the hardness of input water by approximately 90%. Hence, if the TDS level of the water source is around 800, the TDS proportion of the output water will be in the range of 80.

This water with a lower TDS level does not have good taste. you need some minerals and salts in the water to enhance the taste. The TDS controllers work in the following manner.

The TDS controller divides the water that goes into the RO water system into two parts. One part goes through the RO membrane whereas the other part goes into the UV and UF filters.

The water that goes through the UV and UF filters do not undergo any change in the TDS levels. Therefore you get two different outputs. The final output is a mixture of both these waters. This is the job of the TDS modulator.

What is Mineralizer / Mineral guard ?

RO water purifier does a good job of purifying the water. But, it removes essential minerals along with the hazardous ones.

This leaves the output water with a mixed taste that does not have much nutrient value. Therefore, you have water purifier brands including an extra stage of filtration that ensures the addition of essential minerals to the water.

This helps in maintaining the pH balance as well. Many brands have different names for these mineralizers. Aquaguard names it ‘Mineral Guard’.

How much water is wasted with RO water purifier?

The biggest drawback of RO water purifiers is that it wastes a lot of water . For every litre of pure water it produces, the purifying machine wastes 2 litres of water.

The wastage of water depends on the quality of the input water. The higher the TDS of input water, the higher is the wastage

How do you use reject water ?

The reject water contains 95 to 99% of impurities. Hence, this water is not fit for human consumption. However, there are other uses.

You can use this water for gardening, cleaning utensils, mopping floors, cleaning bathroom floors and toilets. However, one should note to wash the utensils with tap water to remove the salt deposits.

ABS Plastic or Stainless Steel tank – Which is better?

Storage tanks are important ingredients in any water purifier. These storage tanks are anywhere in the capacity of 10 litres or more.

Hence, you need strong material to withstand the weight of the machine as well as the water. ABS (Acrylonitrile Butadiene Styrene) is a thermoplastic polymer capable of withstanding high-temperature fluctuations.

It is a recyclable material much unlike the thermoset plastics. They are non-toxic in nature. This makes this material perfect for manufacturing water storage tanks.

Steel is comparatively heavier to ABS plastic. Secondly, ABS plastic is non-toxic and more durable than steel. They can withstand a high-temperature range.

ABS plastic does not need as much maintenance as required by steel tanks. Hence, they are preferable to stainless steel tanks today.

Is it safe to buy water purifier online?

It depends on the customer and the website from where he chooses to purchase. Some people are more comfortable buying water purifiers after having physically looked at the water filter. Some people are comfortable buying online.

However, one should go for reputed brands from reliable websites like Amazon. You get good deals at these websites.