Best Water Purifier in India 2021 | Review & Buyer’s Guide

Water pollution is becoming uncontrollable day by day, especially in metropolitan cities. Moreover, getting a pure water supply has become a hard nut to crack even in small cities and villages. 

We know that polluted water causes most of the infectious diseases. Therefore, water purifiers have become a significant requirement for every household because it is the only solution to get rid of polluted water. 

However, choosing a perfect and best water purifier in India among numerous brands is a difficult task. There are several brands and types of water purifier available in India. Every company or product offers some or other advantages or disadvantages. 

Hence, whether you’re a first-time buyer or upgrading your purifier, sometimes, it becomes more difficult to choose the right one according to your requirements. 

Therefore, in this comprehensive article, we will compare and review the best water purifier in India for 2021. 

Best Water Purifier in India 2021:

You need to know some basics regarding water purifiers, before jumping into the best water purifiers list so that you may better understand the functionality and features of water purifiers. 

Let me explain first some key factors which must be considered while reviewing a water purifier.

• TDS Level
• Annual Maintenance Cost
• Water storage
• Electricity consumption 
• Price

First of all, you need to decide which types of water purifiers you have to purchase. There are three types of water purifiers available which are suitable for such climates like India. 

1. RO (Reverse Osmosis) 
2. UV (Ultra Violent) 
3. Gravity Water Purifier 

We will discuss each type in detail by the end of this article. However, we make a separate list of each type of water purifier below. Now let’s focus on the best RO water purifier in India. 

Best Water Purifier in India:

1) HUL Pureit (Copper + Mineral) Water Purifier:

You must have heard the name Pureit from HUL some or the other day. Pureit (Copper + Mineral) from the most renowned company Hindustan Unilever Ltd (HUL), is on the top of our list of best RO water purifiers in India. 

It not only looks attractive but offers several features and benefits as follows. 

Top–Notch Features:

• Pureit RO water purifier comes with 8 litres storage capacity which is sufficient water storage for areas which experience frequent power cut and it is also suitable for large families. 

• 7-Stage Filtration: Along with RO, UV and MF which ensures purest, healthy and safe drinking water. The 7 stage filtrations are as follows.
  • Spun Filter: 
  • Sentiment Filter
  • Pre carbon 
  • RO membrane 
  • Post Carbon 
  • UV/ Microfilter
  • Alkaline 

• As you should know, the right amount of copper intake is beneficial for digestion, immunity and overall well being. 

• Pureit RO water purifier dispenses dual water types such as plain RO water or copper charged RO water. You have a choice whether you want copper charged or plain water. 

• Pureit RO charges 98.8% pure copper and prescribes adequate dosage of copper in real-time. You should know the precise dosage of copper improves immunity, digestion, metabolism and helps in tackling obesity for diabetic patients. 

2) Aquaguard Aura Active copper (UV+UF) 6-stages Water Purifier:

If you are desperately looking for a copper enriched water purifier under your budget, this will be the best water purifier for your home. Aquaguard Aura is more economical than the HUL Pureit without compromising the significant features. 

The supreme aesthetically designed Aquaguard Aura is equipped with a patent active copper cartridge which infuses appropriate dosage of copper ions to each glass of water. You must know that the right dosage of copper improves immunity, metabolism and helps in the growth and development of the body. 

It is built with Mineral Guard Technology which aggressively retains essential minerals like magnesium and calcium. Moreover, its UV e-boiling technology ensures each drop of water is as pure as the water boiled for 20 minutes at 100C.

Its unique ultrafiltration eliminates microorganisms and viruses efficiently. The multi-stage purification processes are as follows. 

• I-filter eliminates water impurities.
• Chemical Blockage: filter out heavy metals and harmful chemicals.
• Ultrafiltration Cartridge: eliminates other micro-sized pollutants 
• Mineral Guard: retains essential minerals 
• UV e-boiling: kills bacteria and viruses through ultraviolet rays.
• Patent Active Copper Infusion: intelligently infuse right dosas of copper ions.

3) Kent 8L Wall-Mountable Water Purifier:

Kent is the most established brand in the water purification segment and offers a wide range of water purifiers in the Indian market. Although there are a variety of products available from KENT, we analysed the features and performance of each product and found Kent (11076) Grand water purifier the best one.

• Multiple Stages Purification including RO+UV+UF
• 8 Litres Storage Capacity 
• Higher filtration capacity up to 20 litre/h
• 1 Year Exclusive warranty + 3 years extended on service
• Best after-sales service in the industry with more than 1500 service centre

It not only provides multiple stages of water purification which ensures pure, hygienic, germs and bacteria-free drinking water but also filters dissolved impurities like arsenic, pesticides, fluorides etc. 

The water purifier capable of purifying 20L per hour along with 8L storage capacity. It also contains a TDS adjuster so that you can adjust the TDS level accordingly so that essential minerals may not be filtered out. 

Kent (11076) is suitable for home use and can be easily installed even in smaller spaces or kitchens because it has a wall-mount structure. Besides, the product offers a 1-year warranty and 3 years of free extended services as well. Kent has more than 1500 service centres across India, so service will not be an issue with this product.

4) Eureka Forbes AquaSure Delight 6-Stage Water Purifier:

The third position in our list of best water purifiers in India is acquired by Eureka Forbes, one of the best and renowned companies in the purification industry. 

• 6-Stages Purification with RO+UV+UF+MTDS
• Storage Capacity – 7L 
• Most Durable Cartridge up to 60,000L
• Relatively less maintenance cost 
• One year warranty on the product 

AquaSafe Delight from Aquaguard provides 6-stage water purification to ensure Crystal clear, tasty and healthy drinking water for your family. Its unique (RO+UV+UF+MTDS) purification process keeps the microbes and harmful chemicals away from your glass. 

The UF technology in AquaSafe Delight is based on the capillary tube, employing which, you can assure 100% pure and healthy water for your children. Its advanced taste adjuster (MTDS) ensures tasty and mineral-rich water irrespective of the water source. Its large storage capacity 7L assures continuous availability of pure water even in remote areas where the electricity is not so regular.

The AquaSafe Delight water purifier equipped with a long-lasting cartridge which can filter up to 60,000 litres of water. Utilizing which, you don’t need to contact the service provider frequently. Besides, a smart indicator indicates whether the cartridge has to be replaced or not.

5) HUL Pureit Advanced Pro Mineral RO+UV Water Purifier:

HUL Pureit Advanced pro is not only budget-friendly but offers several latest features like auto standby mode, built with high-quality food-grade plastic which prevents harmful toxins during water storage. 

• 6-Stage Purification 
• Storage Capacity – 7L
• Suitable for TDS less than 2000 mg/l
• 1-year warranty with free installation 
• Food grade plastic container
• Auto standby mode

It provides essential minerals such as calcium and magnesium which provides strength and stamina to the children. It provides 7L storage capacity and its auto-standby feature automatically cuts the power once the storage tank is full. 

Besides, the device also provides 6-stage purification like AquaSafe and is designed to function properly, even a TDS up to 2000 PPM. Pureit Advanced pro water purifier is suitable for all types of water such as borewell, tankers, tap water. 

It offers a one year warranty on the product, provides free installation and can be operated without voltage stabiliser. 

6) HUL Pureit Eco Water Saver RO+UV+MF 10L Water Purifier:

• 7-Stage Purification with RO+UV+UF
• Storage Capacity- 10L
• 60% less water rejects as compared to other RO water purifier 
• Higher purification capacity up to 28 litres/ hr
• Smart Germs kill filter indicator with auto shut off features 

If your family is large, looking for a higher storage capacity water purifier with less water rejects, the HUL Pureit Eco Water Saver would be a perfect match for you. This wall-mounted/ countertop water purifier comes with a higher water storage capacity of 10L. 

Water is precious for us and we know that there is limited water remaining around the globe. Hence, we should always try to save water. As we must know that ordinary water purifiers reject more than 2 glass of water for every single glass of pure water. 

The HUL Pureit water purifier is built with ECO water saver technology, which ensures a lesser amount of water rejects. It saves more than 60% water as compared to other purifiers, through which, you can save 80 glasses of water every day. 

Besides, it comes with 7-Stage of purification along with RO+UV+MF. Its Germ kill filter indicator notify you 15 days before the filter replacement and it automatically shuts off the water if the filter remains unchanged or not replaced. 

7) AO Smith Z9 10L (RO+SCMT) 8-Stages Water Purifier:

AP Smith is also one of the reputed and renowned water purifier manufacturing companies. It is known for its advanced technology built water purifiers. Although it offers several products, yet we found its Z9 Green model most superior over others. Some of the top-notch features of this product are unique and beneficial. 

AO Z9 dispenses mineralised hot water at two different temperatures viz 45C and 80C, the only water purifier that offers this feature. 

8-Stages Water Purification:

It purifies the raw water at 8 different stages as follows.

• Prefilter
• Sentiment filter
• Carbon Block
• ART (Advance Recovery Technology)
• Potential Side Stream RO membrane 
• Mineralizer Technology 
• Potential Dual Filter
• SAPC+SCMT

Its Min-Tech (Mineralizer Technology) adds additional minerals back to the water after RO purification which ensures natural, fresh and pleasant water taste. It also balances the PH level of water which is essential for sweet drinking water. 

Its ART (Advance Recovery Technology) functions in such a way that it recovers 2X more water that prevents minimal wastage of water. 

RO+SCMT (Silver Charged Membrane Technology):

AO Z9 Green water purifier provides an additional stage of purification which eliminates post RO filtration microbial and viral contamination. Hence it surely dispenses 100% pure, healthy, mineral-enriched drinking water.

8) Livpure Zinger Smart HR60 7-Stages 6.5L Water Purifier:

Livpure is also among the best water purifier manufacturers in India founded in 2011. Livpure manufactures some exclusive machines for water purification and Zinger Smart HR 60 is the best one among them. 

• 7- Stage Purification 
• 6.5 L Storage Capacity 
• Advanced Water Recovery Technology that saves 70% water, unlike others.
• Active Copper Cartridge 
• Auto flush and inbuilt leakage sensor 

Livpure Zinger Smart is equipped with advanced water recovery technology which enables up to 70% water saving that means it saves 20,000L of water every year. When it comes to water rejects, it is the best water purifier out there in the market. 

Its copper cartridge adds natural copper in the drinking water which is beneficial for people suffering from irritable bowel syndrome (IBS) as an adequate dosage of copper improves metabolism of the digestive system. 

It also utilises a 7-stage purification process with 6.5L storage tank and a more notable feature is that UV sterilisation process occurs in storage tanks which ensures zero probability of bacteria or viral contamination. Thus it dispenses 100% pure, natural, healthy drinking water for your family members. 

Livpure Zinger Smart HR60 has inbuilt Auto flush and leakage sensor which immediately alerts you in case of any damage or device failure. 

9) Blue Star Excella 6L RO+UV+UF Water Purifier:

Though Blue Star is known for its fine air conditioners, the company is present in the commercial water purification segment as well. Blue Star Excella is a finely designed water purifier for domestic use. 

• 7-Layer Purification System 
• 6L storage capacity 
• Higher filtration rate 285 litres/ day
• Effective for TDS up to 2000 mg/ litre 
• Copper impregnated cartridge 
• One year warranty on the product 

Its 7-layers water filtration along with triple protection (RO+UV+UF) guarantees 100% purity and hygiene of drinking water. 

Its RO membrane has a higher filtration rate up to 285 L/day during its high quality and super efficient membrane. 

Moreover, its sediment filter is as fine as 5 micron which is capable enough to filter out the smallest physical impurities like sand, mud, dust and other materials.

Its Aqua Taste Booster uses calcite media to enhance the taste of water as well as maintain the desired pH level of water. The calcite media has a unique property to make the water more natural, crystal clear, sweet. 

The copper impregnated carbon block has natural purification and antibacterial properties which keeps the water fresh and removes unpleasant smell from water. 

10) Aqua Libra RO+UV+UF+TDS with Active Copper Water Purifier:

If you are looking for an affordable, efficient and reliable water purifier without affecting the vital features, Aqua Libra would be the best match for you. The Aqua Libra is built with ABS food-grade plastic containers which prevent post-RO purification bacterial contamination. 

• 7-Stage Purification System 
• RO+UV+UF+TDS Controller
• ABS Food grade plastic 
• Active Copper 

It is also equipped with a world-class 100 GPD booster pump and 80 GPD (Gallons Per Day) RO membrane which enables the machine to function at a higher filtration rate. 

UV Filtration kills the pathogens in raw water through ultraviolet rays. It’s Charcoal carbon filter effectively eliminates chlorine, sediment and VOCs (Volatile Organic Compounds) while ordinary carbon filters are not so effective. Its active copper filter is made of copper which is a natural water steriliser.

Moreover, ultrafiltration cartridges are used to filtrate colloidal particles (.001 to 1.0 micron) and invisible dissolved contamination in the water. 

Best Water Purifiers – Buying Guide:

Buying a water purifier which is best and right according to your home conditions is an intelligent decision, therefore, you first need to discover your exact requirements. The very first step to check your water source and TDS level. Typically, every water purifier is not suitable for every household, it sometimes depends upon the quality of water. 

So let us understand first the concept of TDS and its significance while purchasing a water purifier for your home. 

What is the TDS of Water? 

TDS stands for Total Dissolved Solids, refers to the number of inorganic salts and organic matter dissolved in the water. The primary constituents are usually calcium, magnesium, sodium potassium carbonate, hydrogen carbonate etc. The TDS of water is measured in PPM or mg/ litre. The TDS level of water depends on the source of water such as tap, municipal, ground/ bore well water. It also depends on the locale of your home. 

You should know your water TDS level before buying a water purifier because every water purifier works on a different principle and may be suitable for different TDS values. Hence according to your water TDS level, you will only be able to buy the right water purifier. 

How to measure TDS Level?

There are three ways through which you can measure the TDS level of water. 

• Digital TDS Meter Method 
• Using electrical conductivity Meter
• Using filter paper and weighing machines 

However, the first two methods are the simplest and commonly used to measure the TDS level these days. 

Digital TDS Method:

In this method, you just need to have a digital TDS meter and let the water sample place over the device and you will instantly get your TDS reading. 

Electrical Conductivity Method:

In this method, just plug-in the conductivity meter and insert the lead into the sample water. Make sure that the water sample stays stable while observing reading. The electrical conductivity device measures the water-resistance in MicroSiemens. You need to note down the reading and put it into the following equation to get the desired TDS level. 

TDS (Liquid) = Electrical Conductivity (EC) * Correlation factor (KE)

KE refers to the coefficient which typically ranges between 0.55 – 0.8 and depends upon liquid types (like water) and other factors such as temperature. 

TDS Level and its Consequences: 

Once you obtain your water TDS level, then you need to understand how intense your TDS level is, whether you require to purchase a water purifier or not. If yes, which types of water purifier you need. 

What is the acceptable TDS level for drinking water? The Bureau of Indian Standards (BIS) set the acceptable TDS level for drinking water. Though the water TDS level up to 500 mg/L can be used for drinking, you should get through the following table to make the things more clear. 

TDS Level	Consequences
Below 50	Do not contain any essential minerals, hence tasteless and cannot consume.
50 – 150	Acceptable, but make sure a minimum TDS level above 80 mg/ l, if you are already using a RO water purifier.
150 – 200	Acceptable and best for consuming, you can use a UV or UF water purifier for bacterial contamination
250 – 350	Typically, our tap water TDS varies in this range.
350 – 500	As per WHO guidelines the TDS level up to 300 mg/ l is acceptable for drinking.
500- 900	Not accepted, you are advised to install a RO water purifier for pure and drinkable water.
900-1200	Must use a quality RO water purifier with TDS controller or alkalizer before consuming.

Types of Water Purification System:

Moreover, you should be aware of different types of water purification systems available for home till now. There are three popular purification methods available. Every water purifier utilises different mechanisms to filter out and make the water free from impurities. So to buy the right water purifier, you must be aware of these mechanisms. 

• RO (Reverse Osmosis) Method 
• UV (Ultraviolet) System 
• Gravity based Water Purification system 

Gravity Based Water Purification System:

Gravity based water purification systems work on the principle of filters as we use during making to separate the tea leaf. In this puri method, there are two separate containers placed vertically one by one. These two containers are connected with a very fine filter which is responsible to purify the water. 

The raw water is placed in the upper container and a tap is connected with the lower chamber to dispense pure water. 

Once the upper chamber is filled with raw water, the pressure increases over the upper container due to gravity and hence it passes through the fine filter. Thus the impurities like mud, sand, and heavy metals are filtered out from raw water. Such water purifiers don’t require electricity as they work due to gravity, hence it is called gravity-based water purifiers. 

UV (Ultraviolet) purification system:

In this purification system, ultraviolet rays are used to kill microorganisms and viruses. Such water purifiers consist of ultraviolet LED tubes and containers in which raw water is filled. Ultraviolet rays cause radiation which causes the death of bacteria and viruses, however, the dead bodies of those bacteria and viruses remain in the water. Such purification devices are suitable for those areas where the TDS level is below 500. But

Although these days almost all water purifiers come with a minimum of 4-7 stage purification process, so you don’t need to worry about efficiency and accuracy of water purifiers. 

RO (Reverse Osmosis) purification system:

Reverse Osmosis (RO) is the most advanced and highly efficient method of water purification. Reverse Osmosis, as the name suggests, is just the reverse of the osmosis process. 

You must have learned the concept of osmosis during your school days. Let me remind once again to better understand the process of osmosis. 

If the two different solutions (plane water & salted water) are kept in two separate container joining a common semi-permeable membrane, the plane water travels to the salted water through the semi-permeable membrane due to increased atmospheric pressure. Such mechanisms of moving water from the solvent to the plane water are called Osmosis. 

Similarly, if the whole process is reversed, such process is called Reverse Osmosis. In this purification method, an electronic booster pump is used to increase the pressure of raw water, so that the osmosis process can be reversed. Thus impure water passes through the semipermeable membrane and hence the dissolved solids like arsenic, muds, sands are filtered out from the water. 

RO water purifiers are highly potent and hence it is capable of purifying even higher TDS levels up to 2000 ppm. 

RO vs UV vs UF Water Purifiers:

The following table explains what exactly are the pros and cons of RO, UV and UF water purifiers. 

RO Water Purifier	UV Water Purifier	UF Water Purifier
Electricity required for functioning.	Electricity required for functioning.	No Electricity required for functioning.
Efficiently kills and eliminates bacteria and viruses.	kills but cannot eliminates Bacteria and viruses, which means, their dead bodies remain in the water.	kills and eliminates Bacteria and viruses.
A booster pump is required for functioning.	Don’t function without a booster pump, means needs electricity.	UF water purifiers can work with normal tap water pressure.
Wipeout total dissolved solids easily.	Cannot remove total dissolved solids.	Cannot remove total dissolved solids.
Suitable for water TDS 500 to 2000 mg/l	Suitable for water TDS less than 200 mg/l	Suitable for water TDS less than 200 mg/l

Different Stages of RO Water Purification System:

Most of the popular water purifier manufacturing companies provide 4-7 stages of purification. The best water purifier must provide a minimum of 7- stages of purification system so that it can dispense pure, natural, fresh and healthy drinking water. 

Therefore, let us now understand each stage of RO water purifier and its significance in delivering pure and minerals enriched drinking water.

1) Sediment filter:

The first stage of RO water purification is the sediment filtration. The sediment filter hoses are typically assembled outside of the water purifier. Its major function is to remove physical impurities from raw water. The raw water first enters the pre-sediment chamber where dust, muds, sands, and other heavy impurities are eliminated from the source water. 

It reduces the workload of the RO membrane and hence provides longer life to RO cartridges. The sediment filter works as a backup for the RO membrane so that your water purifier requires less maintenance. 

2) Pre-Activated Carbon:

Once the water filters out from sediment, it passes through a pre-activated carbon filter. Its main function is to absorb other harmful metals and chemicals and make the water sweet and tasty. 

3) Ultrafiltration:

The third stage is an ultrafiltration filter. At this stage, water passes through ultra-filter (UF) cartridges. There are still some microscopic particles remaining in water as they can not be filtered out by the previous components. Therefore, to remove such fine particles ultrafiltration is needed. 

4) Reverse Osmosis:

Now at the fourth stage, Reverse Osmosis purification happens. The electric booster pump increases the pressure of the water so that it may pass through the RO membrane. Thus the RO cartridge effectively eliminates the harmful heavy metals like lead, arsenic, mercury, cadmium etc. That’s why the RO purifier functions efficiently even with higher TDS levels. 

5) Ultraviolet Purification:

Once the water has accomplished the RO purification stage, it is ready for ultraviolet purification. The ultraviolet chamber contains UV bulbs which produce ultraviolet rays. The ultraviolet rays kill the bacteria, viruses and other pathogens to make the water completely free from microbial contamination. 

6) Post-Activated Carbon:

Ultraviolet rays kill the bacteria, virus and pathogens but their dead bodies remain in the water, however, it can’t harm our body but it might cause an unpleasant odour. Hence at this stage, post-activated carbon plays a vital role in removing the dead bodies of pathogens and making the water fresh and pure. 

Thus the water is completely purified and ready to use but the final stage is also significant before dispensing. 

7) TDS Controller/ Mineralisation:

As the name suggests, the TDS controller or sometimes known as mineralizer adjusts the TDS of final water. 

As you should know, the RO membrane wipes out almost 90% TDS and essential minerals from the water. Such a low TDS water is not beneficial, instead, it is harmful to our body. Here the role of TDS controller comes into the picture. The TDS adjuster maintains the desired TDS level of drinking water so that it may not harm our body.

At this stage, the process of mineralisation also happens. In this process, the water purifier adds some essential minerals like calcium, magnesium, copper to the water which were eliminated by the RO membrane. 

Some companies use an alkalizer at this stage along with TDS adjuster. The function of an alkalizer to maintain the natural pH level of water. 

Thus all the 7-stages of water purification is completed and pure, fresh and healthy water is ready to consume.

Frequently Asked Questions (FAQ) for Best Water Purifier:

Conclusion:

Thus we have gone through all the top 10 water purifiers in India. We already have done lots of research and analysis to find the best water purifiers. Hope this in-depth article shall guide you to buy the right water purifier for your home. 

Once again we would like to remind you, Please check TDS level of your source water before buying any water purifier otherwise you might end up purchasing the wrong product ultimately.