10 Best Water Purifiers in India

“Thousands have lived without love, not one without water”. This age-old adage by W.H.Auden accurately specifies the importance of water for existence.

Our list of 8 Best Water Purifiers in India (2021) right below will ease your job to put the seal on simply the best product.

Best Water Purifiers in India 2021

Sale: -38%Bestseller No. 1
Eureka Forbes AquaSure From Aquaguard Amaze RO+UV+MTDS Water Purifier (Grey)
9,849 Reviews
Eureka Forbes AquaSure From Aquaguard Amaze RO+UV+MTDS Water Purifier (Grey)
  • This Aquaguard water purifier saves Upto 60% water-Ordinary RO+UV water purifiers end up wasting 50-75% water.Aquaguard water purifiers with superior RO+Uv+MTDS technology purify water and regulate its taste to save up to 60%* water.
  • Color- Grey,Capacity: 7 litres tank, Power: 230 watts ; Input Water Temperature: 10 - 40°C and Operating Input Voltage: 150 V - 270 V AC/50 Hz, Material Tank Type- Food Grade Plastic ; Smart LED indication shows Power On, Purification On, Tank Full Status
  • Can be used for TDS (200-2000) , Please use a TDS meter to find out the correct TDS of your water source before buying a water purifier , Power Consumption : 40 Watts , Auto-shut off mechanism: Yes , Water Flow Rate: RO PATH - 250 ml/ minute (MTDS is fully Closed), UV Path - 600 ml/ minute (MTDS is fully opened)
  • Booster Pump is required for the functioning of water purifier in case of inlet water pressure being less than 0.3kg/cm sq. Available through our service technician at an additional cost
Sale: -28%Bestseller No. 2
V-Guard Zenora RO+UF+MB 7 Litre Water Purifier With 7 Stage Purification and pH Balancer, Black, Free Installation & 3 Free External Pre-Filters
1,573 Reviews
V-Guard Zenora RO+UF+MB 7 Litre Water Purifier With 7 Stage Purification and pH Balancer, Black, Free Installation & 3 Free External Pre-Filters
  • Made For Indian Water Conditions | 7 Stage Advanced Purification | Double Layer Protection with RO + UF | Delivers Natural Taste | Intelligent Design - Protects Sensitive RO & Enhances Life
  • True One Year Comprehensive Warranty - Covers RO Membrane, Filters and Electrical Parts | replacement of 2 Pre-Filters | Two Pre-Emptive Maintenance Services | On-Call Support
  • Free External Pre-Filter | 7L Large Storage Tank | LED Indicators | Wall Mount & Table Top Installation
  • Can Treat Water with TDS up to 2000ppm - Suitable For Borewell, Tanker and Municipal Water
Sale: -41%Bestseller No. 3
Eureka Forbes AquaSure from Aquaguard Delight (RO+UV+MTDS) 7L water purifier,6 stages of purification (White)
10,288 Reviews
Eureka Forbes AquaSure from Aquaguard Delight (RO+UV+MTDS) 7L water purifier,6 stages of purification (White)
  • White, Capacity: 7 liters tank, Power: 230 watts ; Input Water Temperature: 10 - 40°C and Operating Input Voltage: 150 V - 270 V AC/50 Hz, Material Tank Type- Food Grade Plastic ; Smart LED indication shows Power On, Purification On, Tank Full Status. Overflow Protection : Yes
  • Can be used for TDS upto 2000 PPM , Please use a TDS meter to find out the correct TDS of your water source before buying a water purifier , Power Consumption : 40 Watts , Auto-shut off mechanism: Yes , Water Flow Rate: RO PATH - 250 ml/ minute (MTDS is fully Closed), UV Path - 600 ml/ minute (MTDS is fully opened)
  • Booster Pump is required for the functioning of water purifier in case of inlet water pressure being less than 0.3kg/cm sq. Available through our service technician at an additional cost
  • Kindly note: For every litre of water purified, 650 ml of water is thrown out by the machine. It is encouraged to save the water in a container and use it for cleaning utensils, washing clothes
Sale: -21%Bestseller No. 4
KENT Gold 20-Litres UF technology based Gravity Water Purifier, White
3,812 Reviews
KENT Gold 20-Litres UF technology based Gravity Water Purifier, White
  • Color: White. Purification by hollow fiber ultra filtration membrane
  • Use of nano-silver carbon for better disinfection of water. Long life membrane expected to last upto 4000 Litre
  • Transparent tank made of unbreakable ABS food-grade plastic
  • High base stand enables easy positioning of glass to draw water
Sale: -43%Bestseller No. 5
Blue Star Excella 6 L RO + UV + UF Water Purifier, Black, EX5BLAM01
1,040 Reviews
Blue Star Excella 6 L RO + UV + UF Water Purifier, Black, EX5BLAM01
  • Triple Layered RO+UV+UF Protection-Triple layered RO+UV+UF protection to ensure that the water you drink is absolutely safe without any compromises. RO removes dissolved impurities, microorganisms, heavy metals and radioactive matter, while UV deactivates microorganisms such as bacteria and viruses.UF is a separation process that uses a semi-permeable membrane. It filters out physical impurities as well as harmful microbes like bacteria and cycts from drinking water
  • High Purification Capacity-The purification capacity is up to 285 litres per day due to a super-efficient high quality RO membrane
  • Aqua Taste Booster (ATB)-Aqua Taste Booster (ATB) uses calcite media which enhances the taste and helps maintain optimum pH level of water, thus enriching your experience of drinking water
  • Copper Impregnated Activated Carbon-Copper impregnated activated carbon not only removes smell, odour and volatile organic compounds from water but also has anti bacterial properties
Sale: -22%Bestseller No. 6
Kent Ultra Storage 7 Ltr, UV and UF Water Purifier
1,988 Reviews
Kent Ultra Storage 7 Ltr, UV and UF Water Purifier
  • Multiple purification by UV+UF process happens first by UV followed by hollow fibre UF membrane to completely filter out dead bacteria, viruses and cysts
  • Country of Origin- India
  • Wall-mounted design to be suited for domestic purposes
  • 60 liters per hour purification capacity
Sale: -64%Bestseller No. 7
AQUA PERL Advanced RO+UV+UF+TDS Controller & Purification - (12 Litres) Water Purifier
1 Reviews
AQUA PERL Advanced RO+UV+UF+TDS Controller & Purification - (12 Litres) Water Purifier
  • It is full hevy cabinet and this is specifically made for high tds water (India's sout areas) in this purifier including spare is HJC 80 GPD. MEMBRANE AND SHIMFLO /GRAND FOREST 100 PUMP this is high water combination
  • Water purifier with advance multi stage purification technology.
  • Best for household drinking water need.
  • Technology: Advanced RO+UV+UF+tds controller purification, The regulator lets adjust the levels of TDS in the water manually to ensure you get healthy, safe and tasty drinking water
Sale: -21%Bestseller No. 8
KENT Maxx 7-Litres Wall Mountable/Table Top UV + UF (White and Blue) 60-Ltr/hr Water Purifier with detachable storage tank
3,775 Reviews
KENT Maxx 7-Litres Wall Mountable/Table Top UV + UF (White and Blue) 60-Ltr/hr Water Purifier with detachable storage tank
  • Multiple purification by UV+UF process happens first by UV followed by hollow fibre UF membrane to completely filter out dead bacteria, viruses and cysts
  • Country of Origin- India
  • Wall-mounted design to be suited for domestic purposes
  • Detachable storage tank for easy removal and cleaning
Sale: -21%Bestseller No. 9
KENT Gold+ 20-litres Gravity Based Water Purifier, White and Blue
  • Color: White and Blue ; Max. Duty Cycle 120 litres/day
  • Purification by hollow fiber ultra filtration membrane
  • Use of nano-silver carbon for better disinfection of water
  • Long life membrane expected to last upto 4000 Litre
Sale: -30%Bestseller No. 10
Aquaguard Aura UV e-boiling+Ultra Filtration+Active Copper+Mineral Guard Technology, Water Purifier (Black & Copper)
1,997 Reviews
Aquaguard Aura UV e-boiling+Ultra Filtration+Active Copper+Mineral Guard Technology, Water Purifier (Black & Copper)
  • Can be used for TDS up to 200. Recommended for Municipal water only.
  • Installation is provided for this model
  • 6 Stages of purification with high water storage capacity of 7 litres
  • Active Copper Technology provides goodness of copper in water


Best Water Purifiers in India – Buying Guide

Pure and healthy water is a basic need of every household. With increasing water pollution, finding the best water purifier based on the source of input water becomes all the more important.

best water purifiers in India - Buying Guide

Sources of water pollution

Drinking water is the most valuable resource for human existence. Having clean drinking water is critical need as well. Yet, the earth’s supply of fresh drinking water is depleting. It is estimated that every year unclean water makes a billion people ill and kills 1.8 million.

Water pollution occurs when harmful toxic substances like pesticides, agricultural wastes, industrial wastes including heavy metal impurities like lead, arsenic etc enter the water. These impurities deteriorate the water and increase the TDS of water making it unfit for drinking. Water pollution is not isolated to only surface water. The harmful contaminants can seep through the soil into the ground and thus making the ground water polluted as well.

Source of water pollution

Usage of excessive chemicals in agriculture is one of the primary contributors to ground water pollution. Besides, the usage of pesticides in farming has extensively increased. The pesticides contain harmful chemicals and metals impurities including sulphur, lead, etc. These contaminants seep in through the soil into the groundwater, and thus making it polluted.

The surface water primarily comes from rivers, oceans, lakes, ponds and streams. When the water runs off from the snow-capped mountains, it collects salts and minerals from the rocks and sand. This contributes to the part of TDS (total dissolved solids) to the surface water. In addition, there are farm wastes and fertilizer run-off which includes phosphates and nitrates. This is one of the major contributors to surface water pollution.

The municipal and industrial water discharge contribute their fair share to the surface water pollution as well. This results in harmful metals like mercury, lead, arsenic, sulphur, etc. getting added to the water making it hazardous for drinking purpose.

The choice of water purifier depends on type of impurities present in the drinking water supply. The usage of correct water purifier can make sure that you can safeguard your family against all of these harmful contaminants in the drinking water.

Types of contaminants in drinking water

Depending upon the different sources of water, there are various impurities that the potable water comes immersed with. Some of these contaminants might be visible to the human eye while others are indiscernible.

Groundwater being the most common source of drinking water holds impurities like mud, sand etc. The other undetectable impurities found in water from borewell are dissolved salts like calcium, magnesium etc. Some hazardous chemicals like Arsenic, Mercury, Flouride, lead etc that come dissolved in water can pose serious threat to human life.UV+RO purifiers are beneficial in removing such type of impurities.

Various water-borne diseases such as typhoid fever, dysentery, diarrhea, cholera, etc are caused due to microbial contaminants found in drinking water. Few of these impurities are bacteria, cysts, protozoa, and viruses.

In order to make water drinkable, it is treated by municipal corporations using chlorine, a common disinfectant. But when it is used in large quantities, it leaves a bitter taste and a pungent smell which is detrimental to human health.

So, in order to ensure good health, one must have a water purifier to get rid of these impurities. Purification technologies such as RO, UV, and UF or a combination of these can immensely help in clearing out these contaminants from water and making it safe to consume.

What is TDS in water and why you should measure it?

What is TDS?

TDS stands for total dissolved solids, it represents the concentrations of the dissolved substances in water. The dissolved substances are made of organic and inorganic matters including metals, minerals and ions. TDS in water can be accumulated from various sources like spring minerals, rocks, chemicals produced from factories, fertilizers in farms, drainage pipes, runoff on roads, water supply pipes etc.

Why do you need to measure TDS?

Water with high amount of TDS can have harmful substances like lead, arsenic, copper etc . These substances can have serious health hazards if consumed without purification.

Increased amount of dissolved solids can produce hard water which can leave deposits on surfaces, utensils, fixtures, pipes etc. Hard water causes water filters to wear out sooner.

Also, on the other hands, water will extremely low TDS can be void of essential minerals like magnesium and calcium. Water with extremely low TDS also has a flat taste, which is unacceptable for many.

Therefore, it is important to determine the TDS of water before deciding on what kind of water purifier is needed.

Recommended Readings: How to check TDS of water?

What is an acceptable TDS level?

  • Less than 50: Unacceptable; because it is void of essential minerals
  • Between 50 – 150: Acceptable for drinking
  • Between 150 – 300: Excellent for drinking
  • In range of 300 – 500: Good
  • Between 500 – 900: Not good – should not be consumed
  • In range of 900 – 1200: Poor and shouldn’t be used from drinking
  • Above 1200: Unacceptable and might have health hazards

How to measure TDS?

The next important question is, how to measure the TDS of water. The easiest way to measure the TDS of water is using a TDS meter.

TDS meter is a small hand held device which can be dipped in water to check the water TDS. Since the dissolved solids increase the conductivity of water, the TDS meter works by measuring the conductivity of water to determine the TDS.

How do water purifiers regulate TDS?

The natural unfiltered water contains several essential minerals like calcium and magnesium. Also, since the natural water catches a lot of impurities, it also contains a lot of harmful dissolved solids like lead, arsenic, fluorides, heavy metals etc.

Water filters use reverse osmosis to filter out the dissolved solids responsible for elevated TDS levels in water. Reverse Osmosis removes all the dissolved solids including the harmful substances like salt, lead, arsenic etc. It also removes the healthy minerals like calcium and magnesium. The RO filter membrane removes 90-95% of the dissolved substances in water. Since the RO purified water doesn’t contain the essential natural minerals like calcium and magnesium, there is a need to add those minerals.

Water filters broadly use two kinds of technology to regulate the TDS and maintain some amount of magnesium and calcium.

TDS Controller

With TDS controllers, the water to be purified is divided into two parts. The first part goes through the RO membrane where all the dissolved solids (including essential minerals) are removed. The second part goes through a UV or UF chamber where the essential minerals are largely retained. Later, the RO filtered water is mixed with a small percentage of UV/ UF purified water and hence regulating the TDS of water. The percentage of water going into the UV/ UF chamber can be controlled using the TDS controller valve, thus allowing you to control the TDS based on taste.

Mineralizer

The water purifiers which use mineralizer to regulate TDS, pass 100% of the input water through the RO membrane. The output from the RO membrane is then passed through a mineral cartridge which restores the essential minerals like calcium and magnesium in the right concentration.

This way the water filters make sure that the TDS of water is regulated and kept between 50-300. This also makes sure that the water has essential minerals and has a good taste.

Key differences between TDS controller and Mineralizer
TDS controller Mineralizer
Some percentage of water is passed through the RO membrane100% of the input water is passed through the RO membrane
Not suitable for water with high concentration of heavy metals like lead, arsenic, fluorides etcSince, 100% of water passes through the RO membrane, it is capable of removing most of the impurities including lead, arsenic etc.
Provides control over the TDS of filtered water Generally, there is no control on the TDS of water
Small and cheap deviceMineral cartridge which requires annual maintenance

Recommended Reading: TDS Controller vs Mineralizer

Water purification technologies

Sediment Filter

Usage of sediment filter along with a water purifier is optional and helps increase the life of water filter RO membrane. It is generally fitted outside the water filter and attached to the water input source. This filter essentially works like a net that catches large suspended impurities and turbidity in water.

You don’t need to install an external sediment filter if the input water doesn’t contain any visible suspended impurities or turbidity. Places where the input water comes without pre-treatment by the municipality should use an external sediment filter.

Generally, sediment filter can be used with all the water purifier types.

Carbon Filter

Carbon filter removes chlorine, volatile organic compounds (VOC), bad odor and unpleasant taste from the water. These filters work using activated carbon. Therefore, as water passes through the carbon, impurities like VOCs and heavy metals become chemically bonded to carbon.

Carbon filter can only remove impurities which can bond to carbon. Hence, we need to use further stages pf filtration to remove other impurities.

RO (Reverse Osmosis) Filter

RO water purification is the most important stage of filtration in the entire purification process. The water coming out of the carbon filter passes through the RO filter membrane.

RO water purification is the most advanced and highly efficient technology for removing dissolved substances from the water. If the water contains a lot of dissolved impurities including lead, arsenic, heavy metals etc, then RO filtration is the most appropriate technology to treat such water.

Reverse Osmosis filtration process works by forcing water through a fine membrane by applying pressure. As a result, the impurities inside the water are left behind as the water passes through the membrane. These membranes work by removing impurities based on their size. This means, that the filter doesn’t allow particles which have size larger than the water molecule. RO membranes work well in filtering most of the impurities including harmful chemicals, heavy metals, ions, bacteria, pesticides etc. Thus, it helps in reducing the TDS of water by 90-95%.

Reverse Osmosis water purification process

The water is separated into two parts. The impure water goes down the drain, and the pure water passes onto the next stage of purification.

UV (Ultraviolet) filtration

Ultraviolet water purification technology is highly effective in treating water containing residual germs like bacteria and viruses. Like, RO water purification, UV also uses electricity to function. However, this process is completely chemical free.

This purification technology depends on the usage of ultraviolet radiations to kill the dissolved bacteria and viruses. The UV filters come with a UV bulb fitted, which produces strong UV radiations. As the water passes through the membrane, ultraviolet rays penetrate through the harmful pathogens and destroy these illness causing micro-organisms.

UV purification is capable of destroying 99.99% of harmful waterborne disease causing microbes without adding any chemicals. This also helps in preserving the taste and odor of the water.
UV water purification process
Source : www.caerfagu.co.uk

UV purification, in itself is generally not sufficient in treating the input water to make it suitable for drinking. Reason being, that it is only useful in killing the dissolved bacteria and viruses. UV purification can not remove dissolved impurities like heavy metals, pesticides, VOCs etc. UV purification is often used in conjunction with the RO water purification technology.

UltraFiltration (UF) purification

UF water purification technology works similar to the Reverse Osmosis (RO) technology. However, in case of ultra-filtration, the pores of the membrane are much bigger as compared to the RO membrane. Also, ultra-filtration doesn’t require electricity for functioning.

Ultra-filtration uses a fibre membrane which has a pore size of 0.02 microns. As water passes through this membrane, it blocks harmful bacteria, viruses and other contaminants. Suspended particles which are to big to pass through are also filtered out. As a result, the output water is pure and contains the essential minerals.

Ultra filtration water purification technology
Source: crystalquest.com

Since, the pores of membrane used in ultra-filtration are larger than those used in RO filtration, it doesn’t block harmful impurities like pesticides, chemicals, heavy metals etc. Therefore, it is generally used in combination with RO filtration.

Most of the modern day water purifiers use RO, UV, and UF in combination to achieve the best results. We have discussed further below, how you could choose between these purification technologies based on your input water source.

Functioning of RO+UV+UF water purifier
RO+UV+UV water purifier

Recommended Readings: RO vs UV vs UF water purifiers

Factors to consider while buying water purifier

Know your water input type – Choose between RO/ UV/ UF

Having discussed in detail all the water purifier technologies, by now you should have some clarity around how different purification technologies work. Following factors should be considered to choose the best water purifier suited to your home supply water:

  • TDS test to check the concentration of dissolved impurities in the input water. This is bare minimum test which must be done.
  • If there are industries nearby, chemical test should be done to find out if the source water contains heavy metal impurities. It is possible that the input water has TDS less than 300 PPM, but still contains significant concentration of lead, arsenic, mercury etc.
  • Check if the water looks turbid
  • Find out if the input water supply is known to contain dissolved virus and bacteria. If you are not sure, it is good to consider a water purifier which comes with UV filter.

Here is an indicative table you can use to figure out an ideal water purifier based on these different factors:

TDS of waterContains TurbidityBacteria and VirusIdeal water purifier
Below 300 PPMcheckcross UF water purifier
Below 300 PPMUV+UF water purifier
Below 300 PPMcrosscheckUV water purifier
Over 300 PPMcrosscrossRO+TDS controller/ Mineralizer
Over 300 PPMcrosscheckRO+UV water purifier+TDS controller/ Mineralizer
Over 300 PPMcheckcheckRO+UV+UF with TDS controller/ Mineralizer

If you are still confused, it is always safe to go for RO+UV+UF water purifier.

TDS controller vs Mineralizer

As we have discussed in detail earlier, water purifiers regulate TDS using either TDS controller or Mineralizer.

While TDS controller is a cheap device and doesn’t require high maintenance, it does have a disadvantage that the purified water is not 100% pure. This is because, with the TDS controller only part of water goes through the RO membrane. This is usually not a problem unless the input water has high concentration of dissolved metal impurities like lead, nitrate, arsenic, mercury etc.

In case there are industries nearby and the input water has high concentration of metal impurities, it is generally safer to use a mineralizer instead of TDS regulator.

Storage capacity

Storage capacity of the water tank is a personal preference based on the size of the family and the power stability in your area. If you live in an area with frequent and long power cuts, then you might want to go with a purifier which has a large storage tank. This will make sure that you get continuous supply of pure water even when there is no power.

Budget

Budget is an important consideration while buying a water purifier. If you are on strict budget then do not blindly opt for RO+UV+UF+TDS. Going for all the filters might unnecessarily increase your budget, when your requirement might just be UV+UF.

You should do a TDS test on the input water, and then decide which purification technology is required. You might also want to go for a water purifier with TDS controller instead of Mineralizer if you have a lower budget in mind.

Best Water Purifiers in India – Frequently Asked Questions

How much is the annual maintenance cost (AMC) of RO water purifiers?
The annual maintenance cost of a water purifier depends on the brand and technologies used inside the purifier. For a RO water purifier it generally varies between Rs 3000 – Rs 6000 per annum. It includes cost of replacement of various filters including the RO membrane, UV filter, UF filter, carbon filter, and Sediment filter.
However, it is best to verify with the purifier AMC provider.
What are Total Dissolved Solids (TDS) in water?
TDS stands for Total Dissolved Solids in water. It refers to the concentration of dissolved impurities in water, which includes dissolved minerals, salts, metallic impurities like arsenic, lead, mercury etc.
Water purifiers work by regulating the TDS in water to an acceptable limit which is safe and healthy for consumption.
Should I get an external sediment filter installed?
Sediment filter is advised if your input water contains a lot of suspended impurities and turbidity. Sediment filter is installed outside the water purifier and helps in doing pre-filtration before input water enters the water purifier.
By doing pre-filtration, sediment filter helps in increasing the life of RO membrane of the water purifier.
How much water is wasted with RO water purifiers?
The biggest disadvantage of using RO water purifiers is that it wastes a lot of water. Generally, with RO water purifiers the water wastage is 3 times; meaning for having 1 litre of purified water, 3 litres of water is wasted.
However, most of the modern day water purifiers come with water recovery tank to collect the waste water. The waste water can later be used for washing, cleaning, gardening etc.
Is RO purified water safe and healthy for drinking?
RO water purifiers come with TDS regulator which helps in restoring the essential minerals lost during the RO filtration process.
Hence, the purified water is free of source impurities and also contains essential minerals required for the body. As a result, the RO purified water is completely safe and healthy for drinking.
However, make sure that you buy water purifier only from one of the reputed brands and also get it serviced in a timely manner.
What does multi stage purification by RO+UV/UF do?
Most of the modern day water purifiers come with multi stage purification technology. Water passes through multiple filters at different stages of purification. For ex: Sediment filter, activated carbon filter, RO filter, UV filter, UF filter etc.
Water purifiers with multi stage purification are highly capable in removing all the dissolved impurities in water and also replenishing the purified water with essential minerals. You can also go through our buying guide for more details on different stages of water purification.

Winding-up

This brings us to the end of reviews and buying guide for 8 best water purifiers in India (2021). We hope that our buying guide was useful in clearing off the majority of your doubts regarding the different water purification technologies and also helped you to know which one is apt for you.

If you still have any queries regarding which water purifier to buy, feel free to drop a comment in the section below and we will get back to you.

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Last update on 2021-09-26 / Affiliate links / Images from Amazon Product Advertising API

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