The 8 Best Water Purifiers in India :2020 Reviews and Buyer’s Guide

Water purifiers are one of the most essential appliances that we must have at our homes. They help us get pure, safe, and healthy drinking water.

According to a survey (published in 2017-2020 by MDWS), 8.19% of the total population are affected in India due to the poor quality of drinking water.

With so many brands of water purifiers available in the market, it becomes quite challenging to buy the best one. To help you find the best purifier, mentioned below are a few factors that you must look for.

Quality of water: You can check the quality of water by measuring the pH or the TDS (Total Dissolved Salts) value. TDS is measured in PPM (Parts per Million). TDS value between 50-250PPM is considered safe to drink.

Type of purifying technology: Different types of water purifying technologies are RO, UV, UF, Activated carbon, distillation, and ion exchange. You can decide the type of filter on the basis of the TDS level and the type of impurities present in water.

Capacity: If you face water storage issues, you should buy a purifier with more capacity. For example for a family of 3-4 members, the capacity of 7 liters should be fine.

Some other factors such as the source of water, installation process, and budget also play a crucial role in finding the best purifier. To make your purchase easier, we have shared a detailed Buying Guide along with Frequently Asked Questions by the users below.

We have also shortlisted 10 best water purifiers in India from renowned brands that have the best reviews across. Let’s have a look!

Best Water Purifiers in India

Water PurifierTank CapacityFiltration SpeedMax TDS
WarrantyBuy Now
KENT Grand Wall-Mountable Water Purifier8 Lts15 Lts/ hr
25001 +3 YearsCHECK ON AMAZON
Eureka Forbes Aquasure Water Purifier6 Lts15-30 Lts/ hr20001 YearCHECK ON AMAZON
Faber Galaxy Plus Mineral Water Purifier9 Lts13.5 Lts/ hr25001 YearCHECK ON AMAZON
Livpure Glo Mineralizer Water Purifier7 Lts12 Lts/ hr15001 YearCHECK ON AMAZON
R. K. Aqua Fresh Adjuster Water Purifier15 Lts15 Lts/ hr10001 YearCHECK ON AMAZON
HUL Pureit Advanced Water Purifier5 Lts12 Lts/ hr20001 YearCHECK ON AMAZON
Blue Star Aristo Water Purifier7 Lts7-8 Lts/ hr20001 YearCHECK ON AMAZON
Nexqua Dew Alkaline Water Purifier15 Lts20 Lts/ hr30001 YearCHECK ON AMAZON
Havells Max Alkaline Water Purifier7 Lts15 Lts/ hr35001 YearCHECK ON AMAZON
Konvio Neer Premium Water Purifier15 Lts20 Lts/ hr20001 YearCHECK ON AMAZON

List of Best Water Purifiers in India: 2020 Reviews

1. KENT Grand 8-Litres Wall-Mountable Water Purifier

KENT Grand 8-Litres Wall-Mountable Water Purifier

First on our list is Kent, India’s most selling water purifier company. The Kent Grand is an 8-Litres RO water purifier with UV, UF purification and TDS controller. 

The Kent Grand RO has 15 litres per hour water purification capability. If you live in an area where the water needs heavy filtration, then go for the 20 litres per hour variant in the same 8 litres model.

Kent grand comes with a patented RO technology that can control the TDS level of the water up to 500-2500ppm. In order to find out the exact and correct TDS level of the water you consume, it is suggested that you use a TDS meter. 

With its double stage purification (RO and UV/UF), Kent can remove most of the dissolved dirt, chemical, bacteria and other impurities very effectively. But owing to this, please note that there will be a 650 ml of water discharge for every one litre of water that has been purified.

As for the energy consumption, it just takes in about 60 watts of power which is decent and economic for a water purifier. Kent also provides a 1-year manufacturer’s warranty and with its service available PAN India, it also provides 3 years of service for free too.


  • Ideal for families of 4-6
  • Double RO and UV/UF purification technologies
  • TDS controller capable of controlling 500-2500ppm TDS
  • 15 litres per hour purification capability
  • 8 litres tank capacity
  • Free installation and Demo by the manufacturer
  • 1-year manufacturer’s warranty and 3 years of free service


  • Though it provides free service, they need to work towards their customer service experience

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2. Eureka Forbes Aquasure from Aquaguard Smart Plus Water Purifier

Eureka Forbes Aquasure from Aquaguard Smart Plus Water Purifier

To the Indian middle class, Eureka Forbes’s Aquaguard has been synonymous to water purifiers for decades. Aquasure from Aquaguard Smart Plus is a 6-litre RO-UV water purifier with MTDS regulator.

Sleek and stylish in design, the water purifier can be easily hanged up on the wall. It can filter at an approximate speed of 15-30 litres per hour. Given the tank capacity, you can expect a full tank offo 6 litres can be filled in just 12 minutes and moreover, you would be ideally connecting it to a continuous water supply.

Coming to the filtration, Aquaguard Aquasure Smart plus has a multilayer filtration of water. It first clears out impurities in the i-filter. The chemi block will block any particulate chemicals within it and so does the UV disinfectant. The membrane life enhancer and, taste enhancer through reverse osmosis will amp up the water quality and taste.

The MTDS regulator present in it can regulate the TDS content of the water from as broad as 200ppm to as high as 2000ppm TDS. But for accuracy, make sure you measure the correct TDS levels of your water with a TDS meter.

Also, similar to the Kent purifier, please note that there will be a 650 ml wastage for every 1 litre of water purified. You can simply collect this wastage and use if for other purposes such as dishwashing or cleaning. 

Aquaguard significantly uses higher power of 230 watts compared to the KENT purifier but the smart energy-saving mode will automatically turn off the power to the device when it is not in use. Its smart performance will also work towards saving the device when there are voltage fluctuations at home.

The smart cartridge life indicator will let you know of the life expectancy of the water purification cartridge. Ideally, it is 6000 hours but the TDS levels and other factors might lower it. 

Coming to the warranty part of the product, Eureka Forbes gives you 1-year manufacturer’s warranty on the product and 2 years of free service. You can contact their customer support at 18602661177 for further details.


  • Sleek and stylish design
  • 6 litres tank capacity
  • Full tank purification in just 12 minutes
  • 200-2000 ppm TDS regulation with the MTDS regulator
  • 6 stage water purification
  • Purifier cartridge life is about 6000 hours and can be monitored with the cartridge life indicator
  • Smart performance when there is voltage fluctuation
  • 1-year of manufacturer’s warranty and 2 years of service 


  • Similar to Kent, Eureka Forbes needs to work towards improving their after-sales support.

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3. Faber Galaxy Plus 8 Stage Mineral Water Purifier

Faber Galaxy Plus 8 Stage Mineral Water Purifier

Next on our list is Faber galaxy, a relatively new brand. Though new, Faber Galaxy Plus amazes with its product quality and customer service. 

It comes with 9-litre tank storage with a maximum filtration speed of 13.5 litres per hour (Ideal for a family of 4-5). The tank is made out of food-grade plastic with germ block technology. Also, the copper guard technology will cut out foul smell in water and also helps in enhancing its taste

When water enters the purifier, it undergoes 8 stage purification. These include RO, UF, UV and MAT. First, the water enters the sediment filter that removes the visible dirt and other particles. After this, it enters the pre carbon filter where the chlorine content of the water is brought under control. 

After this, the sediment 5 filter reduces the turbidity of the water. The RO Membrane has a TDS regulator that can filter and clear our as high as 2500 ppm TDS in water (Test your water’s TDS levels before using this for effective results). After this, the post-carbon filter (or the MAT) will enhance the taste of the water. 

The UV and UF filter will maintain the mineral content and give a final bacterial purification of the water before you drink it. Also note that for every one-litre water purified, you would have about 650 ml of water discarded. 

Faber Galaxy is good when it comes to energy consumption as it consumes just about 36 watts of power. It also has an energy-saving mode like that of the Aquaguard, which will turn off the device when the tank is full. Faber Galaxy comes with a 1-year manufacturer’s warranty but there is no mention of any free service.


  • The product provides Value for money
  • 8 stage water purification 
  • Build material is ABS plastic with germ block technology and also the copper guard technology.
  • 9-litre storage
  • 2500 ppm TDS filter capacity
  • 36 Watts power consumption
  • 1-year warranty


  • None too specific to mention

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4. Livpure Glo 7-Litre Mineralizer Water Purifier

Livpure Glo 7-Litre Mineralizer Water Purifier

Next on our list from Livpure, a reputed brand in India which competes with the likes of Eureka Forbes and Kent in the Water purification industry. The Livpure Glo is a 7-litre tank capacity RO and UV water purifier.

For this tank capacity, it can purify as high as 12 litres per hour which gives it a full tank purification by 30 minutes or so. Ideal for a family of 3-4.

Coming to the water purification, it has a 6 stage water purification on it. First, the water enters the sedimentation filter where the visible dirt particles are filtered off. Then the water enters the pre carbonated filter which is responsible for absorbing all the chlorine and other such chemical impurities

Reverse Osmosis chamber (RO) will remove any and most of the pesticides, herbicides and other such similar complex man-made compounds. 

The water is now pushed to the next chamber that is the UV disinfection chamber which will make sure that the water does not have any bacterial residue in it. 

After this, the post-filter carbon filter will enhance the taste of the water whereas the mineralizer will make sure that the water will have balanced mineral levels. 

The TDS regulator has a capacity of blocking water with TDS impurities of the order 1500 rpm which could be an issue if you live in an area with high TDS content in your water. Always check for the TDS levels of water in your area before being it (ideal is between 30 and 100ppm)

For every 1 litre purified, the purifier discards 650 ml of water which could be stored and used for other applications. 

Though the product is made out of food-grade plastic, there have been reports of leakage in the plastic. Apart from that, Livpure suffers from the bridge it has with customer support. There have been many complaints about the installation and the service it provides. In order to counter this, make sure that you give their support number a call before purchase.

There is a 1-year manufacturer’s warranty on the product and also for any issues, you can contact their customer support at 1800-419-9399


  • 7-litre tank capacity
  • 12 litres per hour of water purification speed
  • 6 stage water purification
  • 1500 ppm TDS filtration capacity
  • 1-year warranty


  • Very poor customer service

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5. R. K. Aqua Fresh India 15-Liters Adjuster Water Purifier

R. K. Aqua Fresh India 15-Liters Adjuster Water Purifier

Next on our list is the R.K Aqua Fresh that comes with a 15 litres large storage capacity and thus is ideal for a large family of 5 and even 6. 

While the capacity is large, the speed of filtration is only about 10 litres per hour and thus it takes about 40-45 minutes to fill the tank. 

The design of the water purifier is compact and can sit anywhere in your kitchen. The double RO purification along with UV filters control the TDS and remove the impurities of the water. 

Speaking of the TDS, the RO Purifier can only filter and control TDS levels up to 1000ppm. Thus this device is not suggested if you live in an area where there are a lot of impurities or the TDS level of your water is way too high. Perform a TDS test or find out your water source’s TDS levels before choosing this. 

The system is fully automated and there are two separate alarms too. One when it is time to change the filter and another one that buzzes when the UV filter fails. 

Now to the energy consumption, the R.K Aqua Fresh consumes just a meagre 24 watts of power which is a win. There is also a 1-year manufacturer’s warranty on the product available from the date of purchase. For any support, you can contact their customer support at 1800 313 3660


  • Economic and budget-friendly
  • A large storage tank of 15 litres
  • 24 watts of power is very energy economic
  • UV failsafe alarm
  • Refill alarm
  • 1-year warranty


  • Poor customer service
  • Only 1000rpm TDS control capacity
  • Poor plastic quality

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6. HUL Pureit Advanced 6 Stage 5L Water Purifier

HUL Pureit Advanced 6 Stage 5L Water Purifier

6th on our list is a product from Hindustan Unilever. Pureit has fast gained a reputable name in the water purification business. The HUL Pureit with Advanced RO comes with a 5-litre storage tank and 6 stage purification process.

Pureit has a water purification speed of 12 litres per hour which means that it can fill up the tank in less than 30 minutes of time. All while consuming just about 36 watts of power. 

Coming to the 6 stage purification process, Pureit has different main filter depending on the type of model you choose. There are the RO+MF (microfilter) version, RO+UV model and a RO+UV+MF version too. The RO+UV+MF will filter the water 3 times more than that of any solo filter water purifier. 

Pureit can purify water up to a high of 2000ppm TDS. This is fine for most areas, just to be sure, find out your water’s TDS levels by measuring it on TDS meter or asking your authorities. 

Similar to most faster purification units in the list, this too discards about 650 ml of water for every one litre that it purifies. It is advised that you store and use this water for something else.

Also, the purifier comes with energy-saving settings which will turn off the device when the tank is full. It also protects the device from any voltage fluctuations that happen in your grid.

Now for the warranty, Pureit comes with a 1-year manufacturer’s warranty from the date of delivery. For any other information, you can contact their customer support at 1860-210-1000 or 1860-180-1000.


  • 5 litres tank capacity
  • 12 litres per hour speed
  • 2000 ppm TDS
  • 36 watts of power consumption
  • 6 stage purification
  • RO+MF or RO+UV or RO+UV+MF models available
  • Energy-saving and voltage fluctuation
  • 1 Year manufacturer’s warranty


  • The motor makes a lot of noise
  • The product needs to improve its reliability and life expectancy

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7. Blue Star Aristo 7-Litre Water Purifier

Blue Star Aristo 7-Litre Water Purifier

BlueStar is also a very well established and popular electronics company in India. The Blue Start Aristo AR4BLAM01 is a 7-litre capacity water purifier.

Though the RO purifier’s 7-litre tank is ideal for 3-4 member family can purify about 7 to 8 litres of water per hour making it comparatively slow purifier in the list. Apart from this, the RO purifier is loaded with a lot of features. 

First is its intuitive 6 stage filtration. Here, the water is first passed through a pre-sediment, carbon and sediment filters in the first three stages for clearing visible impurities. Then it is passed through RO, UV and post-carbon filters for further bacterial cleansing. On a total, the purifier can handle and clear water up to 2000ppm TDS. 

All the carbon filters present are infused with copper for better purification. There is a calcite media present between the filters which will act as the Aqua Taste Booster (ATB) which will enhance the taste of the water.

As is the case with most of the purifiers in the list, this one too produces 650ml of water for every 1-litre purifier. You can direct the discharge pipe into the sink or a tub to collect and use this water for later usage. 

Blue star’s unique 10-inch double filter is intuitive. There are LED indicators on it for when the UV lamp fails, also when the filter needs replacement and when the tank is filled. Apart from these, the filter also has a low water pressure indicator and also a child lock function too. 

With an economic power consumption of 36W, the purifier comes in two colours, white and black, It also comes with a 1-year manufacturer’s warranty. 


  • 7 litres tank capacity
  • 7 litres per hour purification
  • 6 stage filtration
  • 2000 ppm TDS capacity
  • Calcite media acts as ATB boosting the taste of water
  • Free pre-filter in the toolkit
  • UV Lamp fail, low water pressure and full tank LED indicators
  • 36 watts of power consumption
  • 1-year warranty


  • Poor customer service
  • The plastic needs to improve as there are reports of leakage
  • Needs to improve the product’s reliability

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8. Nexqua Dew Alkaline Water Purifier

Nexqua Dew Alkaline Water Purifier

8th on our list is a very interesting product. The Nexqua Dew Alkaline is an RO purifier with a list record high of 3000 TDS controller. 

The purifier has a massive 15 litres tank capacity and a very high 20 litres per hour purification capability. As for the filtration, Nexqua Dew has the typical 6 stages of water filtration as most of the purifiers in the list (the UV lamp is from Phillips). 

As mentioned before, the high 3000 TDS capacity can handle up to 80 GPD flow in the reverse osmosis filter. (this is pretty high, general purifiers can handle about 36 GPD only)

Along with that, there is a Bio+ alkaline filter which contributes towards balancing out the pH levels of your output water. 

While they do levy charges for installation, Nexqua provides you 1200 rupees worth installation kit for free. Apart from that, you also get a free pre-filter too.

There is a 1-year warranty on all the electrical parts of the RO Purifier. For any further support, you can contact the Nexqua at 7827902983


  • 15 litres tank
  • 20 litres per hour purification
  • 3000 TDS capacity with 80 GPD flow
  • Freebies 
  • Good customer support
  • 1-year warranty


  • Needs to improve its brand and product reliability

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9. Havells Max Alkaline 7-Liter Water Purifier

Havells Max Alkaline 7-Liter Water Purifier

Havells is a brand that is known for its affordable electronics. The Havells Max Alkaline is a 7-litre tank capacity RO and UV purifier. 

This uniquely designed RO purifier can purify water at the rate of 15 litres per hour. Its purification is done in 7 stages, much like most of the premium water purification brands in the list. 

These stages include the pre-filtration, carbon filters, sedimentation, post-carbon filters, RO, UV and pH filters. The mineralz technology will control the pH level of the water while adding natural minerals in trace amounts. There is also a revitalizer which magnetizes the water and thus enhances the mineral absorption.

TDS filtering capacity of this filter is a whooping 3500 ppm. For every one litre purified, you can expect a 650 ml discard which can be stored and used later for non-drinking purposes.

Havells too comes with various alert indicators such as UV lamp alert, tank full alert, low water pressure, SV and also pump failure alerts too. The iProtect system of Havells will monitor and protect the device from any possible sudden power failures.

Along with the one year manufacturer’s warranty, you are also provided with an installation kit too. 


  • 7 litres tank (good enough for small 2-4 families)
  • 15 litres per hour speed purification
  • 3500ppm TDS filter capacity
  • iProtect system for surge protection
  • Failure alerts
  • 1-year warranty


  • There seems to be some sort of problems with the Alkalinity of the water it produces. Thus it is best suited for areas where the drinking water has higher acidic concentration.

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10. Konvio Neer Premium Water Purifier

Konvio Neer Premium Water Purifier

Finally, on our list is the Konvio Neer, a premium RO that comes with free installation, a high TDS filter membrane by LG and a UV filter from Phillips.

This purifier has a big tank of 15 litres and a purification speed of 20 litres per hour making it ideal for large families of 4- 5 members.

Assembled from parts of the best brands in the industry, the purifier comes with a 7 stage filtration process. The filtration procedure is same as that of most of the purifiers in the list. 

First is the pre sediment filter which will remove all the visible impurities which is led by the carbon filters, post carbon filters. Then the reverse Osmosis TDS membrane and then the UV lamp for bacterial removal. After this, the Alkaline filter balances the pH levels of the water and adds flavour to the water. 

Kovio Neer has a TDS capability of 2000 ppm TDS with a 80 GPD high flow (Higher the GPD, better). The GPD booster can also boost it to 100GPD and thus filling the tank in just an hour. 

It is always advised that you first measure the TDS level of your water for better results. Konvio Neer also comes with a TDS meter and a free pre-filter. 

The purifier also has a smart phone app that lets you monitor the health of the purifier and also generate automatic tickets for service. 

Apart from this, Konvio also provides you with free trained professional installation but they need to work towards their speed of installation. Also, the plastic used to build the product could be improved as there have been reports of leakage too. If this is the case, you always have the 1 year onsite manufacturer’s warranty. For any further support, you can whatsapp or call their support at 9265352917.


  • 15 litres tank
  • 20 litres per hour speed of filtration
  • UV lamp from Phillips
  • TDS Membrane from LG
  • 2000 TDS input capability with 80- GPD high flow
  • 7 stage filtration
  • Free installation 
  • Free pre-filter
  • 1 Year manufacturer’s warranty


  • Late installation 
  • Leakage issues with the tank

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Water Purifier Buying Guide

A good water purifier offers safety from numerous waterborne diseases like viral fever, cholera etc. when you drink the impure water. So it is important to consider the key factors like capacity, cleaning technology, and filters before you wish to have water purifiers in your home. Read on to know how these factors greatly helps in improving the quality of water in purifier.

1. Source of Water

This has to be the first factor to consider while choosing a water purifier. The type of technology that is suitable will completely depend on the water supply of your home. Different water supply comes with different compositions; either it can be tap water, bore, ground or municipal water. So, you may just need to remove dissolved salts from some or just kill the microorganisms. So, keeping that in mind, you will have to choose your ideal water purifier.

2. Quality of water

Everyone should know about the quality of water they are drinking so that they can be safe from dreadful diseases. In general, you can check the quality of water by measuring pH, bacteria, TDS and many more.

For an individual it is not possible to check all the parameters. Hence you can measure the level of TDS- Total Dissolved Salts using the TDS meter which is fairly easy.

TDS-Total Dissolved Salts of water

Total dissolved salts (TDS) is a measure used to calculate the softness or hardness of the water based on impurities present in it. It is measured in PPM-Parts Per Million.

Major components of TDS include nitrate, calcium, phosphate, mercury, cations, anions, and other heavy metals. Substances like arsenic, lead cadmium are very harmful indeed and these substances can only be eradicated with Reverse Osmosis water purifiers.

When you use the TDS meter, it will basically allow you to check the level of TDS present in the water from time to time. The table below will give you a clear idea about the TDS levels and the type of water for that particular range. Check it out

TDS Value parts per millionRating
Between 50 - 150Excellent
150 – 250Good
250 – 300Fair
300 – 500Poor
Above 1,200Unacceptable

3. Types of Water Purifying Technologies

There are  different types of water purifying technologies like Reverse Osmosis, Ultraviolet, Ultra filtration, Activated carbon, distillation and ion exchange. Given below are top 5 water filters that we have explained them in detail so that you can choose as per your purifying requirements.

a. Reverse Osmosis (RO)

If your water source has high TDS value, then you have to choose RO purifying technology. This technology removes dissolved salts present in the water. It has the capability of reducing TDS level from 1000 to 20–30.

In this purification method, water passes under high pressure through a semi-permeable membrane which removes the dissolved impurities. The RO membrane has approx. 0.0005microns pore size which allows only water molecules to pass through it and remaining any other contaminants will be rejected.

RO water purifiers contain pre-filtration which purifies dirty and mud water as well. In this type of water purifiers, the water wastage will be high and they require electricity to work.

b. Ultraviolet (UV)

If your water supply doesn’t contain any dissolved salts, then you can choose this type of water purifier. Ultraviolet water purifying technology uses a UV bulb to kill the harmful microorganisms. When the water passes through a UV bulb, the UV rays will kill the bacteria, cysts, and virus present in them.

Though these water purifiers are efficient in removing 99% of microorganisms in the water, they cannot remove the dead bodies of it. Hence UV filters are often called as

budget water filters

These type of water purifiers need electricity to work. They are not capable of removing dissolved salts, dirt or turbid water as the bacteria can protect itself from UV rays with the help of dust particles.

c. Ultrafiltration (UF)

This technology is very similar to RO water purification process with only difference in the membranes. The membranes used for ultrafiltration have large pores than that of RO.

UF purification process has the capability of removing cysts, bacteria and harmful particles like mud, dirt and turbid water. However, it cannot purify the dissolved salts and heavy metals present in it. This type of water purifiers doesn’t need electricity to work.

As you have got an idea of water source, TDS levels of it and different technologies present in the market, based on these factors you can easily determine which water purifier is suitable for you. Below is a quick guidance for the same…

SourceTDS LevelFilter
Municipal Water Supply1 – 200 PPMUV and UF
Ground Water Supply200 – 2000 PPMUV+UF+RO
Multiple Sources1 – 2000 PPMUV+UF+RO+ TDS Regulator

If you are unaware of the water source type, then you can use TDS meter to check the levels. Or else you can apply for a home demo of water purifier, they will help you know the TDS levels and type of filter suitable for it.

d) Activated Carbon

Activated carbon filtering is a method that uses a bed of activated carbon to remove impurities present in the water. Though it may not eliminate every possible contaminant, can effectively remove the heavy metals like lead.

They are of size 500-1000 nm with surface area of 1000 sq.m per gram. With its surface nature it is capable of adsorbing organic impurities from water and catalyst decomposition of chlorine-free. It can be applied in pre-treatment cartridges, composite vent filters, and final purification cartridges.

How it works?

When the water is passed through the active carbon water purifier, it completely removes the chlorine and other harmful organic compounds present in the water. It also improves the taste of water by deterring the bad odours.

During this process, some of the pollutants flow back into the water. It is called Breakthrough. When it happens the pollutants in treated water is higher than the raw water and the cartridges must be replaced.

The activated carbon filters really work for more litres of water and is also based on the quantity of contaminants present in the water. And the only disadvantage of using carbon filters is that it can breed the microorganisms present on the filter.

e) Gravity Based or Candle Filter

Gravity based water purifier implements pressure filtration mechanism to purify the water. It works on the principle gravity and does not consume any power for the purification process. These are pretty much suitable in areas where the TDS level is low in water.

The working of gravity based water purifier is such that it has 2 compartments- 1 for raw water and the other for pure. Initially the water flows from up to down sections via gravitational force acting on the device. During this process, it comes across carbon filters and micro fibre mesh to remove the unwanted particles.

Sometimes it may even undergo Ultrafiltration which is the most advanced process to remove bacteria, virus, and other microorganisms present in drinking water.

The major drawback of this gravity water purifier is that it uses 2- compartments and the user has to pour water manually into the device. However, there are some advanced models to go with that features automatic options and in less budget.

4. Capacity

If you live in areas where power/water supply is an issue, then storage capacity of a water purifier plays an important role. Depending on the water consumption, you have the select the capacity of a water purifier.

For example, on average for a family of 4 members, a water purifier of 7 litres is good enough. And for a family of 5 – 10 members, you may need up to 14 litres of tank capacity.

5. Maintenance

While selecting a water purifier, it is important to check the maintenance cost. Make sure it is not high as you end up spending more amount of money. Usually an annual maintenance is important to ensure the water purifier is working in proper condition

6. Warranty and Installation

Usually most of the reputed brands provide free installation and warranty for certain period of time. There are some companies that charge for installation. So, ask a representative about the installation and warranty details before purchasing a water purifier.

7. Is the Brand Reliable?

Pay attention to the brand you are purchasing. There are several bogus brands in the market that sell cheap quality products. Though a reputed brand water purifier may be a little costly, but their products are reliable as they use high quality filters and membranes in the product. Also their dedicated customer service is helpful in clarifying your doubts and providing after sale services.

8. Electric or Non-Electric Water Purifiers

Most of the people believe that electric water purifier is more efficient than non-electric. It’s totally wrong. Both have the same functionality to purify the water. And the difference can be observed from the filter it uses, tank capacity and speed operation.

In electric water purifier, it uses RO, and UV filters when subjected to the external power supply. As the RO filter wastes lots of water in the purification method, it also controls the TDS level. It requires a very high maintenance cost and to be installed by the professionals.

Whereas the non-electric water purifier uses carbon and gravity filters. Compared to electric water purifiers, wastage of water is very less and the maintenance cost is very low. Even a newcomer is able to install the device effortlessly. And the only thing we didn’t like about the non-electric water purifier is that there is no TDS controller option.

9. Budget

You must also look out for the money that you want to spend on water purifiers. Basic models do not cost much, but the ones with the advanced purifying filters are too expensive.

If you find hard water in your home, then is essential to have the purifier with all sorts of filters.  Are you the one who don’t want to spend huge amount on water purifier then go with the best budget water purifier prototype that have less number of features.  Be sure, it should match with the purifying requirements.

Water Purifier Features

Below are few additional features that should be considered while buying a water purifier.

1. Flow Rate

If the flow rate is too high, then bacteria can easily escape from the purification system. However, if the flow rate is low then you may have to wait for long period of time. Generally, water purifiers may have 1 liter of flow rate per 5 minutes.

2. Weight

You have to consider the weight of the product as it has to be mounted on the wall or else it will require some kitchen space

3. Body

As water purifier is a long term investment, it is better to make sure the water purification body is attractive, rust proof, durable and easily goes with the kitchen decor. Different materials like aluminium and ABS are used in the water purifier. For complete safety, durability and hygiene, it is better to choose steel. Aluminium can react with salts and minerals present in the water to produce aluminium oxides which are harmful for brain.

4. Global Certification

As many local assemblers import low quality components from non-reputed Chinese suppliers, it is better to check for global certifications like WQA (USA) Gold Seal mark for RO or UV systems.

5. Display

These days, all purifiers come with display panel that shows the options like tank full/empty, purifier on/off by using indicators. Some advanced purifiers possess fault alert, filter change, TDS levels, etc.

6. Storage tank

Storage tank stores the purified water for further usage. Many of the storage tanks are made with food grade, non-toxic material and some with high-end stainless steel material.

It is also important to check storage tank capacity for prolong usage (2-3 days) than operating daily.

Different Types of Impurities Present in Water

Pure water is completely colourless, tasteless and odourless as it just contains hydrogen and oxygen elements. And the water from rain, well, streams and rivers are not pure to drink. They contain different chemicals, and dust particles. Read on to know what filters can greatly eliminate the different impurities present in water.

  • Dirt

Dust is highly insoluble in water and remains unchanged due to its physical property. Use sediment filter to separate dirt from water, that is of size 20 microns. You can drink this water when it passes thorough the filter and ensure that there are no other contaminants present in it.

  • Germs

The water gets polluted sometimes due to the presence of algae, bacteria, viruses and other pathogens or simply say micro-organisms (or germs). When you drink this contaminated water, you may face several health problems like headache, vomiting, fever, stomache etc.  Using membranes or efficient filters in the purifier, kills the bacteria present in water.

  • Chemicals

It is very tough to separate chemicals dissolved in water. To eliminated them, you need to distil the water using RO-purifier. It is very good at deterring harmful chemicals present in drinking water.

Precautions and Tips

Here are few tips and precautions that has to be done in order to maintain or extend the usage of purifier for a long time. Let’s get deep into it.

  • Place the water purifier in a comfortable location like kitchens or dining hall where you can easily access to it.
  • To increase the lifetime, it is necessary to clean and sanitize the water purifier on regular basis-say twice a week.
  • If there is any damage in filters, replace it will new one as soon as possible.
  • You can also install a softener for better functioning of the filters.
  • Besides the internal setup, it is also important to clean the outer body of the purifier so that germs, dust and other toxins will not enter into it.
  • In case if you find any sort of leakage or drips, do not hesitate to consult the service operator or a professional (if the problem is severe).
  • Protect the outer case of water purifier with cover or a damp cloth.
  • Care read the procedure, warnings and tips provided in the manual before you install purifier in your home.

Some Frequently Asked Questions

1. Why is it necessary to have water purifiers in home?

The main purpose of using water purifiers is to eliminate the toxins, chemicals and other wastages present in the water. Moreover, it also ensure the quality of water in your home to drink and stay healthy (increases the body fluid levels) all the time.

2. Is it safe to drink filtered water?

Of course yes, it is 100% safe to drink the filtered water. Drinking a normal or tap water contain several impurities than may cause several health problems. In India, 75% of people are prone to diseases due to the drinking of tap water.

So it is highly recommended to drink only filtered water (using filters) to set free from bacteria and allergens.

3. Why do we need to have storage tank in water purifier?

Earlier the purifiers can simply clean and collect the water instantly as there are no separate chambers or cabins to store the purified water. Now they have come with the storage tanks to supply water to continuously for 2-3 days or throughout the day depending on the usage.

Additionally, it saves the power and stops working of filters continuously.

4. Can ultra-filtration remove bacteria?

Yes, ultrafiltration process removes bacteria by following a simple mechanism. Usually, the filters have a small gap of size around 0.1 micron. When the impure water is subjected to ultrafiltration, it firstly removes the micro-organisms and some may stick to the filter itself. These helps to eliminate the large-particles or viruses present in the drinking water.

5. How long a water purifier can work?

The lifespan of water purifier ranges from 5-7 years. It greatly depends on several factors like water quality, filters, filtration mechanism, and the maintenance. If any of these factors isn’t good, then it is more likely to work only for 2-3 years.

6. How do I know which purifier is suitable for my home?

The only thing to figure out the water purifier for your home is by knowing the type of impurities present in the water. If you know the impurity or contaminants, then you can simply purchase the purifiers with respective filters to have purified water in your home.

Else you may face difficulty in purchasing the right one.

7. How long you can store the water in purifier?

The purified or filtered water should be placed in cool, and clean containers made with steel or plastic. To maintain healthy standards, it is advisable to replace water for every couple of days. Otherwise, the filters present in the water purifier can breed bacteria or other harmful particles which results in poor health.


If you are a family of 2,3 or even 4 people, the Kent Grand comes with 8 litres of storage tank. It has double RO, UV and UF purification technology and its high TDS membrane of 2500 along with its speed of 15 litres per hour. It’s 1 year warranty and 3 years of free service makes it an overall ideal water purifier.

While those were our picks based on our research, we encourage your views as well. What did you think of the list, Did we miss out on anything? Do you have any questions regarding water purifiers or any other gadgets or tech utilities? Feel free to write to us in the comments section below. Our team will get back to you ASAP.