Best Water Purifier in India 2021

If you plan to purchase a new water purifier for yourself but don’t know where to start from, this article is for you. To help you narrow down your search, we have selected the top ten water purifiers present in the Indian market based on our research, expert suggestions, and consumer reviews. We discussed their features, advantages, and disadvantages in quite a detail to help you pick the best one for yourself that will suit all your needs and requirements.

Along with this, we have also created an exhaustive buying guide that will guide you about all the essential factors that you must consider before investing your money in a water purifier. You will learn more about the different water purification technologies used in water purifiers, their pros, cons, and the working principle. Lastly, we have answered some of the most common doubts sent to us by our consumers. We hope that all your doubts regarding water purifiers get cleared with our article, and you are able to make the best choice for yourself.

Best Water Purifier in India

Kent New Grand 8 litres RO+UV+UF+TDS Water Purifier

Kent New Grand 8 litres RO+UV+UF+TDS Water Purifier

Features

  • Purification Technology – Patented Mineral RO Technology (RO + UV + UF + TDS)
  • Storage Capacity – Eight litres
  • Purification Speed – Twenty litres per hour
  • Stages of Purification – Multi-Stage Purification
  • TDS Controller – Available
  • Electricity Needed – Yes
  • Warranty – One Year

When it comes to water purifiers, Kent is one of the most trusted and best-selling brands in the Indian market. It is known for its advanced technology, affordable prices, and excellent customer service. With high consumer ratings on various respected websites, numerous awards, and certifications, Kent’s New Grand water purifier tops our list.

Kent New Grand 8 litres water purifier offers multi-stage purification with RO + UV/UF technology. This makes it capable of removing dissolved impurities, pathogens like bacteria, cysts, and viruses, harmful chemicals, etc. Since it uses advanced RO + UV/UF technology, this Kent purifier is capable of purifying input water from almost all sources. Whether you use water supplied by municipal corporations, water tanks, or through borewell, this water purifier provides you with the purest water irrespective of the water source.

Though RO purification technology is the only technology that can get rid of toxic dissolved solids in your drinking water, it has its own disadvantages. Due to RO purification, a lot of water is wasted, and also many essential minerals are lost while removing toxic substances. Therefore, to tackle these problems, Kent has made use of its patented Mineral RO technology along with an in-built TDS controller that helps you retain essential minerals in the purified water. This allows you to have pure and safe drinking water at all times without compromising on the goodness of water. In order to reduce water wastage, it comes with the Save Water Technology that makes use of a computer-controlled feature that reduces water wastage by recovering more pure water from reject water.

One of the important considerations while purchasing a water purifier is its aftersale service as the appliance has to be serviced from time to time for better functioning. Kent, having more than 1500 service centres throughout India, makes servicing more convenient and on the go. Also, the water purifier comes with a high storage capacity of eight litres with a purification speed of twenty litres per hour. This is suitable for most Indian households as you will get pure drinking water at all times throughout the day, no matter what the situation is. It also comes with a water level indicator that shows the amount of pure water left in the storage tank. This helps you know the purified water levels always so that you never go out of pure drinking water as you can always refill the tank when the levels start to decrease. Apart from the features mentioned above, the product also comes with a one-year warranty and a three-year extended service.

All these features make Kent New Grand one of the best water purifiers in India and a must-buy product.

Pros

  • Multi-stage water purification technology with RO + UV/UF
  • Suitable for all types of input water sources, including municipal water, tap water, groundwater, etc.
  • It can comfortably remove most impurities like harmful chemicals, bacteria, viruses, etc.
  • TDS controller along with the patented Mineral RO technology for retaining essential minerals in purified water
  • More than 1500 service centres throughout India for convenient aftersale service
  • The high storage capacity tank of eight litres along with high purification speed of twenty litres per hour

Cons

  • Despite using Save Water Technology, a lot of water is still wasted
  • The transparent design looks plain and boring

Eureka Forbes AquaSure from Aquaguard Smart Plus (RO+UV+MTDS) 6 L Water Purifier

Eureka Forbes AquaSure from Aquaguard Smart Plus (RO+UV+MTDS) 6 L Water Purifier

Features

  • Purification Technology – RO + UV + MTDS Technology
  • Storage Capacity – Six litres
  • Stages of Purification – Six Stages of Purification
  • TDS Controller – Available
  • Electricity Needed – Yes
  • Warranty – One Year

Eureka Forbes was the first to introduce water purification systems in India. This Smart Plus water purifier model by Eureka Forbes is designed to treat water from all sources, including tap, ground, or surface water. This is made possible by its six-stage purification process with advanced RO + UV + MTDS technology that removes all impurities such as dissolved solids, microorganisms like bacteria, viruses, and other harmful chemicals. This one is perfect for Indian households receiving water from multiple sources. The MTDS feature makes water taste better by adjusting its taste based on the different water sources. To prevent scaling of minerals like calcium and magnesium during the purification process, the Smart Plus water purifier comes with a membrane life enhancer that preserves these minerals. You can rest assured that you will get the purest water with all its goodness retained and amazing taste every time.

The installation is pretty straightforward with this compact water purifier. You can easily place it on the countertop or get it wall-mounted. Changing cartridges periodically is a hassle with water purifiers, but the Smart Plus model comes with a long-lasting cartridge with 6000 litres of cartridge life. To make usage more convenient, this appliance also comes with various LED indicators of different colours, highlighting if the tank is full, the purification process is on, low incoming water pressure, no water supply, or if there is an error in the machine. It also comes with a smart energy-saving mode that automatically shuts off power when the tank is full, thereby saving a lot of energy. It also offers the purifier protection against voltage fluctuations between 150 to 270 volts. The product also comes with a one-year warranty period, and after-sale service is taken care of with one of the largest service networks in the country.

The high capacity storage tank of six litres is suitable for a small Indian family, meeting all their drinking and usage requirements. Therefore, Eureka Forbes Smart Plus water purifier is one of the best water purifiers in the affordable range, i.e., below 10,000 rupees, with fantastic features and advanced purification technology in India.

Pros

  • Six-stage water purification with RO + UV + MTDS technology
  • It can treat water from all sources, including tap, borewell, municipal water, etc.
  • Comes with a membrane life enhancer that prevents scaling of calcium and magnesium during the purification process
  • Long-lasting cartridge life of 6000 litres
  • LED indicators with different colours
  • Ener-saving mode with auto shut off feature and protection against voltage fluctuations between 150 to 270 volts

Cons

  • Water wastage takes place due to RO purification technology

Kent Supreme Lite RO+UF+TDS Control 8 L Water Purifier

Kent Supreme Lite RO+UF+TDS Control 8 L Water Purifier

Features:

  • Purification Technology – RO + UF + TDS Control Technology
  • Storage Capacity – Eight litres
  • Purification Speed – Fifteen litres per hour
  • Stages of Purification – Multi-Stage Purification
  • TDS Controller – Available
  • Electricity Needed- Yes
  • Warranty – One Year

If you are looking for a cost-effective water purifier with fantastic features, you need to look no further. Kent Supreme Lite water purifier is the best pick. Its multi-stage water purification process with advanced RO + UF + TDS Control technology makes it one of the most sought-after water purifiers in India. The RO + UF + TDS Control technology ensures that almost all the harmful dissolved impurities like lead, pesticides, etc., along with the disease-causing bacteria and viruses present in water are removed. It can also treat water from all the sources, be it a tap, borewell, or surface water. The mineral RO technology used in addition to the water purification technologies ensures that the essential minerals like calcium, magnesium, etc. are retained in the water. It is coupled with the TDS controller that also enhances the taste of water. So, with Kent’s Supreme Lite water purifier, you can rest assured of pure and tasty drinking water with all its nutrients retained.

Apart from the fantastic water purification system, the product also has several convenience features like an auto-on/off function. The water is purified automatically without any human intervention, ensuring that pure water is always available to you. Also, the water level indicator lets you know about the level of purified water in the storage tank at all points. With its high storage capacity of eight litres and a purification speed of fifteen litres per hour, the Kent Supreme Lite water purifier is perfect for Indian households. It can comfortably meet all the daily drinking and usage needs of an average Indian family. Also, the installation is pretty straightforward. This compact design has to be wall-mounted for utmost convenience.

The appliance is made of ABS Food Grade Plastic, which makes it more durable and long-lasting as it is corrosion-free. Also, the one-year warranty period and three years of extended service are added advantages. Quality purification performance, high storage tank capacity, a trusted brand name, and affordable price make Kent Supreme Lite a must-buy product.

Pros

  • Multi-stage water purification with RO + UF + TDS Control technology
  • Mineral RO technology and TDS controller retain the essential minerals in water and improve its taste
  • The high storage capacity of eight litres
  • Cost-effective water purifier
  • It is made of corrosion-free ABS food-grade plastic that is durable and long-lasting
  • One year warranty period and extended three years of aftersale service

Cons

  • The transparent design looks plain and boring
  • A lot of water is wasted during the purification process

Eureka Forbes AquaSure from Aquaguard Delight (RO+UV+MTDS) 7 L Water Purifier

Eureka Forbes AquaSure from Aquaguard Delight (RO+UV+MTDS) 7 L Water Purifier

Features

  • Purification Technology – Advanced RO + UV + MTDS Technology
  • Storage Capacity – Seven litres
  • Stages of Purification – Six Stages of Purification
  • TDS Controller – Available
  • Electricity Needed- Yes
  • Warranty – One Year

Eureka Forbes has been in the Indian market for more than thirty-five years now and is known for its quality water purifiers. Its AquaSure Delight is another high-performing product in the affordable range. The product has a compact and stylish design with a comfortable installation as it can be placed on the countertop and can also be wall-mounted.

The appliance is powered with six-stage water purification that comes with RO + UV + MTDS technology. The different technologies clubbed together to make the appliance suitable for treating all types of water, including municipal, tap, borewell, etc. It is capable of removing harmful dissolved solids like lead, pesticides, arsenic, etc. from water. The UV technology makes sure that 99.99% of bacteria and viruses present in the water get killed. So, one can rest assured that no harmful contaminants are left in the water, and 100% pure water is delivered to you. The MTDS technology ensures that the essential minerals like calcium, magnesium, etc. are retained in the water that often gets removed due to the RO purification. It also enhances the taste of water, giving you clean and tasty drinking water always.

The other stand out features includes the LED indicators. This different coloured LED indicators to let you know about the different water purifier actions like power-on status, purification on status, and tank full status. Also, it has a long-lasting cartridge with a life of 6000 litres. This saves you from the hassle of changing cartridges repeatedly. The amount of electricity consumed by water purifiers is often a concern, but with Energy Saving Mode in the AquaSure Delight, this issue is taken care of. The energy-saving mode turns off the power supply as the storage tank gets full. Also, the large storage tank with seven litres of storage capacity is enough to fulfil the drinking and usage requirements of an average Indian family. It also ensures that safe drinking water is always available even when there is no power supply. In addition to the smart features and fantastic water purification technology, there is a one-year warranty on the product as well.

Pros

  • Six-stage water purification with RO + UV + MTDS technology to remove almost all impurities
  • RO and UV technologies make it possible to treat all types of input water like a tap, brackish, municipal, etc.
  • Different coloured LED indicators for maximum comfort
  • MTDS technology to retain the essential minerals in water and enhance its taste
  • Energy-saving mode
  • The high capacity storage tank with a capacity of seven litres

Cons

  • A lot of water is wasted during purification
  • It cannot work without electricity

Livpure Glo 7 litres RO+UV+Mineraliser Water Purifier

Livpure Glo 7 litres RO+UV+Mineraliser Water Purifier

Features

  • Purification Technology – RO + UV + Mineraliser Technology
  • Storage Capacity – Seven litres
  • Purification Speed – Twelve litres per hour
  • Stages of Purification – Six Stages of Purification
  • TDS Controller – Available
  • Electricity Needed – Yes
  • Warranty – One Year

Live pure is another emerging water purifier brand in India because of its phenomenal performance at low prices. If you are looking for a low-priced water purifier with advanced water purification technologies, then Livpure Glo is one of the best picks. Though the design is plain in white colour, the six-stage water purification with RO + UV + Mineraliser technology makes up for it. This multi-stage purification process removes almost all the impurities, including harmful substances like lead, arsenic, and other disease-causing bacteria and viruses. It also eliminates any odours, bad taste, and hardness from water, making it pure and fit for consumption. The RO and UV technology coupled together ensure that the water from all sources, be it tap, brackish, municipal, etc. is treated and purified efficiently.

The mineralised technology helps to retain the essential natural minerals like calcium, magnesium, etc. in water, thereby keeping the goodness of water intact. The LED indicators present on the front of the appliance let you know about the power on, purification process on, and tank full status. The seven-litre storage capacity tank with a purification speed of twelve litres per hour provides you with pure water at all times, even without electricity, and can meet the everyday water requirements of an average Indian household.

When it comes to the drawbacks, this product wastes a lot of water during purification. Almost 650 ml of water is wasted for every litre that gets purified. That’s a lot of water getting wasted, so make sure that you utilise the reject water for other purposes. Though the product comes with a one-year warranty, the after-sale customer care service is not up to the mark.

Pros

  • Less expensive than other water purifiers
  • Six-stage water purification with RO + UV + Mineraliser technology that removes most impurities while retaining all the essential natural minerals
  • LED indicators for convenient usage
  • The high storage capacity of seven litres
  • It is suitable for all types of water sources, be it tap, brackish, or municipal water
  • It can eliminate odours, bad taste, and hardness from water

Cons

  • A lot of water is wasted during the purification process
  • After-sale service is not up to the mark

HUL Pureit Advanced Pro Mineral RO+UV 7 L Water Purifier

HUL Pureit Advanced Pro Mineral RO+UV 7 L Water Purifier

Features

  • Purification Technology – Advanced Pro Mineral RO + UV Technology
  • Storage Capacity – Seven litres
  • Purification Speed – Twelve litres per hour
  • Stages of Purification – Six Stages of Purification
  • TDS Controller – Not Available
  • Electricity Needed – Yes
  • Warranty – One Year

Hindustan Unilever Pureit water purifiers are known for their attractive designs and innovative features. Its Advanced Pro water purifier also comes in a stylish design and can provide basic functions at an affordable price. The six-stage RO + UV water purification technology ensure all types of water from different sources like a tap, municipal, and tankers can be treated and purified effectively. The two technologies clubbed together to make sure that all the harmful bacteria, viruses, and dissolved solids like lead, arsenic, pesticides, etc. present in water are removed thoroughly. The mineral-enriched RO technology retains essential minerals like calcium and magnesium in the purified water, which is often removed during the RO water purification process.

The other advantages include its seven litres storage tank and up to twelve litres per hour purification speed that delivers pure water at all times, even without electricity. The seven litres storage is also sufficient for the daily requirements of an average Indian family. The energy-saving mode provided saves a lot of energy as the appliance automatically goes on a stand-by mode when the storage tank gets full. The BPA free 100% food grade plastic material also prevents any toxic substance to leach into the water, thereby providing you 100% pure water.

When opting for this water purifier, keep in mind that a lot of water is wasted during the purification process, which can be a deal-breaker for most people. Also, it doesn’t come with a TDS controller, which doesn’t allow you to adjust the taste and hardness of the purified water. In contrast, the one-year warranty on the product and the prompt after safe service act like added advantages.

Pros

  • Stylish design
  • Six-stage water purification with RO + UV technology that removes all dissolved solids and disease-causing pathogens from water
  • The purifier can treat all types of water sources, be it tap, municipal, or tanker water
  • Mineral enriched RO technology that retains calcium and magnesium in purified water
  • The high capacity storage tank of seven litres
  • Prompt after-sale service

Cons

  • A lot of water is wasted during the water purification process
  • TDS controller is not available

Blue Star Aristo RO+UV+UF AR5BLAM01 7 litres Water Purifier

Best Water Purifier in India

Features

  • Purification Technology – RO + UV + UF Technology
  • Storage Capacity – Seven litres
  • Purification Speed – Twelve litres per hour
  • Stages of Purification – Seven Stages of Purification
  • TDS Controller – Not Available
  • Electricity Needed – Yes
  • Warranty – One Year

Blue Star is one of the best-selling water purifier brands in India that is known for its quality products at reasonable prices. Its Aristo RO + UV + UF AR5BLAM01 water purifier is another cost-effective product with advanced features. The stylish compact design comes in black colour and has push buttons and a dispenser for convenient usage.

Its seven-stage water purification with triple-layered RO + UV + UF technology ensures the best purification, removing all the harmful impurities. The RO membrane gets rid of dissolved solids, heavy metals, microorganisms, and radioactive matter present in water. Whereas, the UV protection acts as another protective layer that kills any microorganisms like bacteria, cysts, and viruses that escape the RO membrane. Finally, the UF protection provides the final defence against any impurities that escape from other purification stages. After this stage, you get 100% pure and clean drinking water. This triple-layered purification technology ensures that all types of input water can get treated and purified.

Often it is seen that with RO purifiers, the taste of the water becomes unpleasant. To counter this problem, this Aristo water purifier comes with an Aqua Taste Booster that enhances the taste of water and balances its pH levels with the help of a calcite media. It also comes with a copper integrated activated carbon that is capable of removing foul smells, odours, organic compounds, and also has anti-bacterial properties. The seven litres capacity of the storage tank and the purification speed of twelve litres per hour ensure that pure water is available throughout the day and is suitable for an average Indian family.

The other features include purification on indicator and tank full indicator that lets you know about the status of the purifier. To prevent unnecessary wastage of water, it also comes with the child lock button on the tap. Since UV radiation is invisible, it gets challenging to detect if the UV bulb has stopped working. To take care of this issue, it also comes with a UV fail alert that quickly alerts you in case of a UV lamp failure. The appliance also comes with a low-pressure alert that indicates if there is low pressure in the input water supply.

Like other RO water purifiers, Blue Star’s Aristo water purifier also wastes a lot of water during purification. So, it is essential that you utilise the reject water for other household purposes. Also, it doesn’t have a TDS controller; therefore, you can’t adjust the TDS level of water manually. Apart from these drawbacks, the one-year warranty and prompt service make it a value for money product.

Pros

  • Seven-stage water purification with triple-layered RO + UV + UF technology for best purification
  • Aqua taste booster to enhance the taste and maintain the pH balance of water
  • Copper integrated activated carbon to remove odours, organic compounds, etc.
  • Several convenience indicators like UV fail alert, low-pressure alert, tank full indicator, etc.
  • The high capacity storage tank of seven litres
  • Cost-effective product with prompt after-sale service

Cons

  • A lot of water is wasted during the purification process
  • TDS controller is not available
  • Installation is not free

Mi Smart (MRB13) 7 L RO+UV Water Purifier

Mi Smart (MRB13) 7 L RO+UV Water Purifier

Features

  • Purification Technology – RO + UV Technology
  • Storage Capacity – Seven litres
  • Stages of Purification – Five Stages of Purification
  • TDS Controller – Not Available
  • Electricity Needed – Yes
  • Warranty – One Year

If you are looking for a new age smart water purifier with internet connectivity, the Mi Smart (MRB13) is the best choice. Its wall-mounted, sleek, and elegant design in white colour enhances the kitchen interiors and looks stunning. Its five-stage water purification with RO + UV technology ensures that 100% pure and safe drinking water is provided to you. The RO and the UV technologies clubbed together can remove almost all impurities, including dissolved solids, microorganisms, and harmful chemicals. It can also purify water from all sources, be it a tap, brackish, or municipal water.

The biggest highlight of the Mi Smart water purifier is its SmartApp Connectivity feature. You can simply connect your water purifier with the Mi Home App via Wi-Fi and perform various operations conveniently. It also allows you to check the current water quality, TDS levels, filter life, and the UV sterilisation status. Also, it has a long filter life of one year. Moreover, it is the only water purifier in India that comes with a DIY filter replacement that saves you from the hassle of calling a technician to replace one.

The other advantages include its high capacity storage tank of seven litres that is sufficient for the daily water requirements of an average Indian household. Also, the one-year warranty on the product is satisfactory. However, like other RO water purifiers, it also wastes a large amount of water, which must be utilised for other household purposes. Also, the after-sale service is not up to the mark. You can have better products than this one at the same or even lower prices.

Pros

  • SmartApp Connectivity via Wi-Fi connection
  • Real-time monitoring of TDS levels, filter life, water quality, and UV sterilisation is possible
  • Its five-stage purification process with RO + UV technology that can remove almost all impurities
  • It is suitable for all water sources, be it tap, municipal, or brackish water
  • DIY filter replacement
  • The high capacity storage tank of seven litres

Cons

  • A lot of water is wasted during the water purification process
  • After-sale service is not good
  • The water purifier does not have any energy-saving or auto on/off mode

Eureka Forbes Aquasure from Aquaguard Amrit 20 litres Water Purifier

Eureka Forbes Aquasure from Aquaguard Amrit 20 litres Water Purifier

Features

  • Purification Technology – Gravity Based Water Purification Technology
  • Storage Capacity – Twenty litres
  • Stages of Purification – Three Stages of Purification
  • TDS Controller – Not Available
  • Electricity Needed – No
  • Warranty – Six Months

If you are looking for a high capacity gravity-based water purifier, then the Eureka Forbes Amrit twenty litres water purifier is the best choice. It is a twin water container with two containers, giving it a stylish look. Also, it is made of 100% food-grade plastic that ensures no toxic substance is leached into the water.

Its patented Kitanu magnet technology is equipped with positive charge technology, having positively charged nanofibres that are designed to remove all types of bacteria, viruses, cysts, and other microbial impurities. It is a three-stage water purification process where water in the upper tank initially passes through a microfiber mesh or a pre-filter that removes larger and visible impurities like sand, mud, etc. In the second stage, the water passes through an activated carbon trap that eliminates chemical impurities, along with bad taste, colour, and odour. The last stage is of the Kitanu magnet cartridge that removes any disease-causing microorganisms like bacteria or viruses from water. This three-stage water purification process provides you with 100% pure drinking water, but keep in mind that it is only suitable for municipal or corporation water with TDS levels up to 350 ppm.

The most significant advantage is that no electricity or running water is required for water purification. This makes the usage highly convenient, making the water purifier more portable. It uses no chemical, and the hassle of boiling water is also done away with. It also comes with a natural shut off feature that naturally shuts off the flow of water when the cartridge has completed its lifespan. This makes sure that only safe drinking water is provided. Also, the twenty litres’ storage capacity with the bottom container having eleven litres capacity and the top container having nine litres capacity is sufficient for an Indian household. The product also comes with a six-month warranty period, which is less as compared to other water purifiers on the list.

Pros

  • The high storage capacity of twenty litres (Top container – nine litres, Bottom container – eleven litres)
  • No electricity or running water is required, making the water purifier more portable
  • No need to boil water with this water purifier
  • 100% chemical-free purification
  • Natural shut off feature that stops the flow of water when cartridge life is over
  • Less expensive as compared to other water purifiers

Cons

  • It is not suitable for water with high TDS levels
  • It can only purify municipal or corporation water
  • Less warranty period of six months than the other water purifiers on the list

Tata Swach Non-Electric Cristella Plus 18 litres Gravity Based Water Purifier

Best Water Purifier in India

Features

  • Purification Technology – Gravity Based Water Purification Technology
  • Storage Capacity – Eighteen litres
  • TDS Controller – Not Available
  • Electricity Needed – No
  • Warranty – Six Months

Another gravity-based water purifier on the list is the Tata Swach Non-Electric Cristella Plus eighteen litres water purifier. Again, it comes as a twin water container having two separate storage tanks with nine litres capacity each for pure and impure water. The 100% food grade plastic material prevents any leaching of toxic substances into the water. Also, it comes with a scratch-resistant sturdy body. And high quality, two-way dispenser makes usage easy.

Like other gravity-based water purifiers, it also needs no electricity or running water for purification. This makes it more convenient and portable. Also, it has a chemical-free purification process as it uses no chlorine, bromine, or even iodine in the process. Moreover, its silver nanotechnology ensures that all the disease-causing bacteria and viruses present in water are killed effectively. It claims to remove one crore bacteria from one litre of water. The micro-mesh system removes all the visible and larger impurities like sand, mud, etc. from water. This allows you to have pure and clean drinking water always. Even the cartridges have a long lifespan of 3000 litres, this saves you from the hassle of changing cartridges repeatedly. But it can only purify water with low TDS levels of up to 350 ppm from only municipal or corporation water sources.

The other convenience features include a water level indicator that lets you know about the level of water in the containers. And the auto-shutoff mechanism feature is of utmost importance as it automatically stops the flow of water when the filter’s lifespan is over, ensuring only safe drinking water is delivered with this water purifier. Also, the installation is not elaborate. Since it requires no electricity or running water, you can simply place it anywhere you like it. This water purifier works better than boiling for low TDS level areas. Moreover, this cost-effective water purifier is easy to maintain and assemble, allowing you a hassle-free operation with a six-month warranty period.

Pros

  • The high storage capacity of eighteen litres (Top container – nine litres, Bottom container – nine litres)
  • No electricity or running water is required, making the appliance more portable
  • No chemicals like chlorine, bromine, iodine, etc. are used
  • Long cartridge life of 3000 litres of water
  • Auto-shutoff mechanism and water level indicator
  • Cheapest of all other types of water purifiers on the list

Cons 

  • It is not suitable for water with high TDS levels or water sources other than municipal or corporation water
  • It does not improve the taste of water
  • The warranty period of six months is less as compared to other water purifiers

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Which are the Best Water Purifier Brands in India?

Kent

When it comes to water purifiers, Kent emerges as the market leader in the Indian market. It is well known for its patented multi-stage purification process of RO+UV+UF+TDS Control that can remove almost all impurities like bacteria, viruses, harmful chemicals, etc. from water to give you pure drinking water. Its new models are also coming with mineralised technology and save water technology that retains essential minerals in purified water and reduces water wastage, respectively. These technologies make sure that the goodness of water is retained while all the harmful impurities are removed. With over 1500 Kent service centres spread across the country, the aftersale service is impeccable with Kent. Also, affordable prices give it an additional edge over other brands.

Eureka Forbes

Eureka Forbes were the pioneers of water purification systems with their Aquaguard range. These use Universal, RO, and UV water purification technologies to provide you with clean drinking water, devoid of any impurities with every drop of water that you take. Aquaguard and AquaSure are its best-performing water purifier ranges. Eureka Forbes water purifiers usually come with a six-stage water purification process that allows the most efficient purification of water. Some of the advanced technologies include its Green RO technology that reduces water wastage and is suitable for TDS levels of 200 to 500 ppm.

Eureka Forbes is also well known for there high quality vacuum Cleaner in India market.

HUL Pureit

Pureit is another well-known water purifier brand in India and has its presence in more than nine countries. The most eye-catching water purifier by Pureit is its Copper+ RO that is a perfect blend of technology and age-old goodness. It has a seven-stage purification process with RO+UV+MF technologies that purifies water, and the patented Copper Charge Technology charges the purified water with the benefits of copper. The highly aesthetic and stylish designs of Pureit water purifiers enhance the kitchen interiors. These are a little expensive when compared to other water purifier brands.

Livpure

Livepure is a renowned brand that is known for its quality water purifiers at affordable prices. It offers a wide variety of water purifiers with RO, UV, and Gravity based water purification technologies. Livepure has become one of the best-selling and trusted brands in the Indian market because of the amazing features, good-quality water purification, and reasonable prices. The mineralised technology used is pretty effective and helps the purified water retain all the essential minerals needed for good health. Though aftersale service is a bit of an issue with Livepure, you can still opt for these if you are looking for effective and economical water purifiers.

Blue Star

Blue Star is a well-renowned air conditioner and air purifier brand that has expanded itself into the water purifiers market. It is the pioneer of RO + UV Hot and Coldwater purifier in India that offers RO and UV water purification along with the hot and cold water feature, making it one of the most convenient water purifiers in India. The wide range of products from Blue Star include alkaline, mineral, RO, and UV technologies. These are capable of removing most water impurities while retaining the minerals and balancing the pH level of water. It has a flexible price range, offering low-priced models as well as expensive high-end models. The stylish water purifier designs by Blue Star also look classy in your kitchen.

Why Do You Need a Water Purifier?

Clean drinking water is necessary for survival. But, for many Indian households, it is still a luxury. This is where water purifiers step in. These not only clean water by removing dirt particles but also remove bacteria that can cause various water-borne diseases like typhoid, cholera, etc., even cancer. Some of the benefits of water purifiers are as follows.

  • Unfortunately, industrial waste and other harmful substances like lead, chlorine, sand, etc. are commonly found in drinking water today. These substances can cause numerous diseases; therefore, they have to be removed from the water before it is deemed fit for consumption. Water purifiers can actually filter out almost 99.9% of impurities from water, leaving you with clean drinking water.
  • Unlike contaminated water that tastes salty, water purifiers make water taste better and also improve the odours present.
  • The use of water purifiers also helps in reducing the risk of various types of cancers, including colon, rectal, and bladder cancer. This is due to the fact that these don’t use chlorine for cleaning water, which has been observed as one of the cancer-causing agents by scientists.
  • There have been researches claiming how hard water can cause kidney stones and also damage certain organs. Water purifiers help in removing calcium and magnesium from water, making it soft again.
  • Normal tap water is loaded with lead and chlorine, which is not only harmful to the body but also for the skin. Water purifiers remove lead and chlorine present, thereby making the water softer and better for the skin.
  • Water purifiers are also more convenient and easy to maintain. You will not have to buy larger bottles or cans of filtered water daily. Also, periodic cleaning can be taken care of by the company representatives.
  • Water purifiers are more economical and reliable options than filtered water bottles. Filtered water bottles are often more expensive in the long run, and also, there is no guarantee if the water is filtered or just filled from the roadside taps.
  • Lastly, bottled drinking water comes with a huge environmental impact. The amount of plastic used in them adds to more plastic waste, which is non-biodegradable. Therefore, water purifiers are environment-friendly and more sustainable options that are viable in the long run.

How to Select the Best Water Purifier?

With every brand claiming to be the best, it gets challenging to choose the best water purifier for yourself. Therefore, to help you make the correct decision, we have created a detailed buying guide. We have covered all the essential factors that you must keep in mind before purchasing a water purifier for yourself. With the listed factors, you will be able to pick the most suitable water purifier based on your needs and requirements, cutting through all the marketing and advertising involved. Let’s discuss the factors in detail.

Sources of Water

Knowing the source of your water is extremely crucial in deciding what type of water purifier do you need. The two water sources include surface water and groundwater. Is your water source surface water, i.e., from rivers or lakes, or is it from groundwater, i.e., from borewells, or is it a mixture of both of these sources? Determining this is really essential as different water sources have different impurities in them and have to be treated differently. Let’s discuss the different water sources and the type of water purification technology they need.

Surface Water

If it is surface water that is being supplied to your house by the municipal corporation, the water may not be that contaminated. Generally, the TDS level of the dissolved solids in it would be around 1 to 200 ppm, which only needs protection against disease-causing microorganisms like bacteria and viruses. For surface water, you can look for water purifiers with Ultraviolet (UV) and Ultrafiltration (UF) technologies.

Groundwater

Suppose the water supplied to your house is by tankers or borewell, having groundwater. In that case, this water might contain high levels of dissolved solids (TDS), ranging from 200 to 2000 ppm. The best way to check the TDS level is by using a TDS meter, and if the water contains more than 500 ppm of TDS, we recommend opting for an RO or Reverse Osmosis water purifier, along with UV and UF technologies. In contrast, if the TDS level in water is less than 500 ppm, then a water purifier with UV technology would be sufficient. The high levels of dissolved solids in water can cause various health problems, along with altering the taste of water. Therefore, it is essential that you invest in a high-quality water purifier to get rid of these impurities and have clean drinking water.

Multiple Sources

Suppose you are getting your water from multiple sources that is a mixture of both surface and groundwater. In that case, it possible that this water may contain dissolved solids ranging from 1 to 2000 ppm. For such water, we recommend opting for an intelligent purifier with a sensing purification technology. It automatically selects the correct purification technology, either UV or RO, to treat any source of water like borewell or municipal water, based on the TDS level indicated by the consumer.

Therefore, it is necessary that you must choose a water purifier based on the source of water for the most effective purification.

Types of Impurities

The source of water and the distribution medium determine what kind of impurities are dissolved or embedded in the water supplied to your house. The quality, hardness, extent of harmful chemicals, pollutants, and disease-causing pathogens like bacteria, viruses, etc. in water depends on the source of water. The most common water sources are rivers, lakes, municipal corporation pipes, water tankers, borewell, etc. Depending on these, the different types of impurities in water are as follows.

  • The most common water impurity is the undissolved solids like sand and mud. These are most commonly found in water that is sourced from rivers, lakes, borewell or distributed via damaged water pipes. These impurities give water a muddy or turbid appearance.
  • If the source of your water is either borewell or seawater, then the water might contain dissolved inorganic salts like sodium and potassium. The best way to identify them is through the taste, i.e., if the water tastes salty or brackish, this may be due to the inorganic salts dissolved in it.
  • The high levels of hardness and scale formation in water are mainly due to the dissolved inorganic compounds like calcium and magnesium in higher quantity. These can be found when water is sourced from either borewells or rivers.
  • Water at some places has a strange foul odour, which is mostly due to the presence of organic compounds in water. You will find such foul-smelling water in areas where water is sourced from lakes or ponds.
  • Most municipal corporations use chlorine as a decontaminant or for cleaning water. The chlorine present in water gives it a bitter taste and is most commonly seen in piped water supply through municipal corporations.
  • Many water-borne diseases are caused due to contaminated drinking water. This water is usually contaminated with microorganisms like bacteria and viruses that can cause various diseases like typhoid, cholera, diarrhoea, etc. These make way into the water when water is supplied through damaged water pipes or water tankers.
  • Industrial waste like dyes, chemicals, etc. and other chemical fertilisers and pesticides are also often dumped into the adjoining rivers or lakes. These make way to your drinking water when river water is the source of your water supply.
  • Other impurities include heavy metals like lead, mercury, etc. These are often found in groundwater that is extracted through borewell.

It is often seen that water from rivers, lakes, etc. is less contaminated and only needs protection against biological impurities like bacteria, viruses, and some sand or mud filtration. For these, you can opt for water purifiers with ultraviolet or UV protection. In contrast, groundwater or borewell water supply has high levels of dissolved solids and other impurities like lead, arsenic, etc. These make your water hard and unfit to drink. Therefore, it is important that you use reverse osmosis (RO) water purifiers with UV and UF technologies, along with a TDS controller, to control the number of dissolved solids in your water. Also, piped water supply or water tanks contain more disease-causing pathogens like bacteria and viruses if the pipes get damaged, or the storage tanks are not cleaned at regular intervals. For these also RO water purifiers with UV and UF technologies work fine. Therefore, it is essential to treat impurities in the water so that it is fit for consumption and is good for the body.

TDS Level of Water

To determine the TDS level of your water is of the utmost importance. The TDS value decides which water purifier will be suitable for you.

What is TDS?

TDS refers to the total amount of dissolved solids in water. These are mostly inorganic salts and few organic compounds. The natural minerals present include calcium, potassium, sodium, and magnesium. These natural minerals are essential for good health.While other dissolved impurities can make way into your drinking water through numerous ways like industrial waste, fertilisers and pesticides, or road salts, etc. The TDS level is measured in mg/litre or parts per million (ppm). The TDS levels can be easily measured with a good-quality TDS meter that is easily available online at reasonable prices.

Some amount of TDS in drinking water is important. If the TDS levels are too low, the taste of water becomes awful. But, if the levels become too high, it is often because of impurities like lead, arsenic, etc. dissolved in water. The best range of TDS in drinking water is 300 to 500 ppm as the taste, and natural minerals are retained in the water. Anything lower than 300 ppm is often considered low, and many essential minerals like calcium and magnesium are stripped from the water. Also, the taste is not that good. TDS levels of 600 to 900 ppm are not considered acceptable, and RO water purifiers are recommended at this level. Water with TDS levels of 1000 to 2000 ppm is poor and unfit for drinking purposes. And, anything above 2000 ppm is hazardous and unacceptable for human consumption. The ordinary household filters are not capable of purifying such as high levels of contamination.

However, you cannot solely rely on the overall TDS levels. You need to check the type of impurities present too. Even water with 300 to 500 ppm TDS can be unfit if high levels of harmful heavy metals like lead, arsenic, mercury, etc. are present in it. Therefore, a quality RO water purifier is extremely crucial for Indian households.

How do you use the TDS meter to check the TDS level of water?

The easiest way to measure the TDS levels in water is by using a digital TDS meter. This allows you to measure the TDS levels at your home without the need for any technical knowledge. There is no need to know any mathematical formula, as the result will be automatically displayed on the screen. All you need to do is to follow certain steps as described below.

  • The first thing that you need to do is to open the protective cap of the TDS meter and switch it on.
  • You need to check for the marking on the meter that tells you about the level the meter should be submerged in the water sample. Now, dip the meter till that point only.
  • If the air bubbles form in the water sample, remove them by moving the TDS meter gently.
  • When the meter records the reading, the reading might fluctuate. Here, you must wait for around ten to fifteen seconds so that the reading stabilises.
  • After the reading has stabilised, you should press the hold button and extract the TDS meter out from the water sample.
  • Now, you can conveniently read your TDS level reading.

Some digital TDS meters show the “X10” symbol on the display screen. In such cases, you just have to multiply the reading by ten to know the exact TDS levels in your water. After taking the reading, you must drain the extra water on the meter by shaking it slightly and then put the protective cap back on the meter to store it safely for future use.

Purification Technology

There are different types of water purification technologies, including Reverse Osmosis (RO), Ultraviolet (UV), Ultrafiltration (UF), and Gravity based water purifiers. Each of these technologies works differently and has different advantages and disadvantages. Let’s discuss them in detail.

RO Water Purifier

RO or Reverse Osmosis technology is the most sought-after and advanced water purification technology currently available. It is the only technology present today that can remove dissolved solids like lead, mercury, arsenic, etc. from your drinking water. Apart from these, it can also remove harmful chemicals and disease-causing pathogens like bacteria and viruses. It is possibly the most effective water purification technology.

Despite having many advantages, RO water purifiers also have certain limitations that cannot be ignored. These always need to have a power supply to work, meaning that they cannot work without electricity. Also, RO water purifiers lead to more water wastage. Typically, three litres of water is wasted to get one litre of pure water. This means 75% of the input water is drained as reject or wastewater, and only 25% is pure water. The wastewater is not fit for drinking purposes but can be used for other household purposes like mopping, cleaning, etc. The RO purification technology also removes essential minerals like calcium, magnesium, etc. from water along with other impurities. However, to tackle this problem, most water purifiers come with a TDS controller and mineralised to retain the essential minerals in the water. The best brands in India selling quality RO water purifiers at affordable prices include Kent, Eureka Forbes, HUL Pureit, and Havells.

RO Water Purifier – Working Principle

There are four stages in the RO water purification process. Each stage has a different filter through which water passes, including Pre-filter, Carbon filter, RO filter, and Post Carbon filter.

Pre-Filter or Sediment Filter

The water purification process begins at the pre-filter level. At this stage, the larger and visible impurities like sand, dust, etc. present in the water are removed. The amount of chlorine in the water is also reduced at this level.

Carbon Filter

Next comes the carbon filter stage, where the incoming water from the pre-filter is passed through a carbon filter. At this stage, organic compounds and other unpleasant odours are removed from the drinking water.

RO Filter

Now comes the most crucial RO filtration process. At this stage, the water from the carbon filter is passed through the RO membrane. The RO membrane is of a plastic filter that comprises several minute holes to let pure water pass through them to capture any impurity. The impurities are larger in size than the holes present on the filter. It is the RO filter stage where many harmful dissolved impurities like lead, arsenic, cysts, fluoride, etc. are removed from the water. The RO filtration process also reduces the TDS levels of water.

Post Carbon Filter

This is the last stage of the water purification process. At this stage, the water flowing out of the RO filter passes through a second carbon filter. Here, any impurities or odours that somehow escape the RO filter are removed from the water. The water that comes out of the post-carbon filter is now extremely pure and fit for drinking purposes.

New age RO water purifiers also combine UV and UF technologies in addition to the four-stage purification process for providing completely pure and safe drinking water.

Advantages

  • The only technology that can remove harmful dissolved solids like lead, arsenic, etc. from water
  • It can effectively remove harmful chemicals and other microorganisms like bacteria, viruses, etc. from water
  • It is the only method to purify hard water
  • It is more convenient than filtered water bottles in the long run

Disadvantages

  • Essential minerals like calcium, magnesium, etc. are also removed along with the impurities
  • A lot of water is wasted during the purification process
  • Electricity is needed at all points

UV Water Purifier

As the name suggests, Ultraviolet or UV water purification technology uses ultraviolet radiation to kill germs present in the water. This is done with the help of an ultraviolet or UV bulb that releases UV rays. When water passes through the UV rays, almost all the disease-causing pathogens like bacteria and viruses present in the water get killed. The limitation of this method is that it cannot remove harmful dissolved solids like pesticides, lead, arsenic, etc. from water. Also, it is not possible to clean dirty water with this method. To counter these issues, most UV water purifiers are also equipped with RO water purification technology for the best results. These also need electricity to operate, and the entire process is chemical-free.

UV Water Purifier – Working Principle

Ultraviolet water purification technology is the most effective in removing bacteria and viruses from water. To carry out the process, it uses a UV bulb, producing ultraviolet rays. The input water is passed through these powerful ultraviolet rays, and the bacteria or viruses present in the water come in contact with the UV rays. The UV rays strike at the DNA of these pathogens, thereby killing them in the process. This water purification method can kill and destroy up to 99.99% of disease-causing bacteria and viruses present in water.

Advantages

  • It can kill up to 99.99% of disease-causing bacteria ad virus present in water
  • It is a chemical-free water purification method
  • It is less costly when compared to RO water purifiers
  • The maintenance cost of UV water purifiers is low

Disadvantages

  • It cannot remove harmful dissolved solids like lead, arsenic, etc. from water
  • It cannot treat dirty, sandy, or muddy water
  • Electricity is needed for it to operate

UF Water Purifier

Ultrafiltration or UF water purification technology is another effective method to remove harmful microorganisms present in water. It can also treat muddy water. It is a low-cost and chemical-free water purification method. Unlike RO and UV technologies, UF purification technology does not need electricity to work. Though an excellent method to purify water, UF water purifiers cannot remove dissolved solids like lead, arsenic, etc. present in water.

UF Water Purifier – Working Principle

When it comes to the working procedure of UF water purifiers, it is quite similar to the RO purification method. It, too, has a membrane with 0.01 micron-sized pores on it. So, when the water is passed through this fibre membrane, germs like bacteria, viruses, etc. and dirt is collected by them, and the filtered water passes through. But the downside is that these pores are large enough to let harmful dissolved impurities like pesticides, mercury, lead, etc. escape from the membrane and pass along with the filtered water. Therefore, it is only suitable for places where muddy water is the only issue, and you only need to treat disease-causing microorganisms from water. Nowadays, UF water purification technology is often coupled with RO and UV methods for the best results.

Advantages

  • It can remove harmful germs present in water
  • It can treat dirty or muddy water well
  • It is a chemical-free water purification method
  • It can work without electricity
  • It is a cheaper water purification method as compared to the RO and UV counterparts

Disadvantages

  • It cannot remove hazardous dissolved solids like lead, pesticides, mercury, etc. from water

Gravity Based Water Purifier

Gravity based water purifiers are the most convenient, and simplest of all the water purifiers. These are an up-gradation of a tap mounted water purifier and do not use electricity to purify water. These come with sediment or sediment plus activated carbon filters. The activated carbon is of small-sized carbon granules, and the sediment filter contains hollow fibres on the membrane. These are more commonly used to remove undissolved impurities that are larger in size like sand, mud, etc., along with certain microorganisms and harmful chemicals. These water purifiers have an in-built storage tank. Nowadays, there are two separate storage tanks, one for the impure or input water and the other for the pure or output water. They are useful for water that has low TDS levels. These are often used to treat municipal or corporation water as the input water from these sources is already chemically purified when it reaches your houses.

Gravity Based Water Purifier – Working Principle

As the name suggests, gravity-based water purifiers make use of the gravitational process, from higher to lower point, to filter water. The water from the upper compartment flows naturally to the lower one without the need for electricity. For purification purposes, these usually contain microfibre mesh, activated carbon, and a polisher to get rid of residual chemicals. The fibre mesh filter removes larger and visible impurities like dirt, sand, mud, etc. Whereas, activated carbon filter removes other undissolved impurities like parasites, pesticides, etc. the polisher then removes chlorine or other undissolved chemicals that are usually found in municipal or corporation water. Some gravity-based water purifiers also use UF technology, containing a UF membrane with 0.1-micron pores on them to remove microorganisms like bacteria, cysts, etc. from water. In short, these are only better than the simple boiling method and are suitable to purify water that has low TDS levels like municipal or corporation water as the water supplied through these sources is already chemically purified.

Advantages

  • No electricity is required for water purification
  • Cheapest and simplest of all other water purifier types
  • It is low maintenance
  • Chemical-free water purification
  • For water with low TDS levels, it provides better protection than the boiling method
  • Installation is pretty straightforward, and these can be placed anywhere

Disadvantages

  • It cannot clean water with high TDS levels
  • It can only purify municipal or corporation water that is already chemically treated

RO vs UV vs UF Water Purifiers

RO, UV, and UF water purification technologies are the three most important ones. Let’s discuss the differences between the three technologies.

CriteriaRO Water PurifierUV Water PurifierUF Water Purifier
Electricity RequiredYesYesNo
Bacteria and Viruses killed and removed from the waterYesYes(Dead bodies remain in the water)Yes
Water PressureTap water pressure needs to be boosted through electricityNormal tap water pressureNormal tap water pressure
Dissolved salts removalYesNoNo
Dirty water treatmentPrefiltration system to treat dirty waterNo(Can work with clear water only)Yes(Treats dirty turbid water)

Types of Water Purifiers

Depending on electricity usage and storage, water purifiers are divided into various types. We have discussed a few below.

Non-Electrical with Storage

These types of water purifiers are suitable for places with unreliable water supply. Such water purifiers use sediment and carbon filters for water purification and come with a storage tank to store water for later usage after it has gone through the purification process. Gravity based water purifiers are of this type.

Non-electrical without Storage

These compact and travel-friendly water purifiers are also known as personal water purifiers. They are made up of food-grade plastic and have to be attached directly to the water tap. These are candle-shaped and consist of a resin filter that must be changed every month. They work without any electricity and have ultrafiltration (UF) and activated carbon filters that purify water by attracting and removing water-borne pathogens.

Electrical with Storage

As the name suggests, electrical water purifiers use electricity to operate. These use sediment and activated filters with ultraviolet (UV) or reverse osmosis (RO) water purification technologies. These have to be connected with the water supply system and come with a storage tank of varying capacities to store purified water for convenient usage.

Electrical without Storage

These water purifiers work exactly the same as the electrical water purifiers with storage but don’t come with a storage tank. These were quite popular in earlier times and are still in use. Such water purifiers are more suitable for places with a secure electricity supply throughout the year.

Speed for Purification (litres/hour)

The speed of purification or the flow rate usually refers to the amount of water that gets purified by the water purifier in an hour. It is measured in litres per hour or l/hr. Purchasing a water purifier with an ideal flow rate is essential. Water purifiers with a faster flow rate can provide more water quickly. But you must keep in mind that a very high flow rate makes it difficult to clean the water effectively. Therefore, most efficient water purifiers tend to have a slower speed of purification, but it must not be so slow that the usage becomes inconvenient. Usually, most Indian RO water purifiers have a purification capacity of 15-20 litres per hour. You can choose accordingly based on your daily water requirements.

Storage Capacity

The storage tank capacity of the water purifier depends on the number of members in a family. This means that a larger family would require more storage capacity; whereas, a smaller family would require less storage tank capacity in a water purifier. The suitable storage tank capacities, according to the family size, are mentioned below. Remember that with the capacities mentioned below, we have assumed that most of the food is cooked at home with the same purified water, along with the direct consumption of water.

  • For a family of one to four members, a water purifier with a storage tank capacity of about seven litres is sufficient.
  • You should opt for a water purifier with a storage capacity of around ten litres if your family consists of five to eight members to meet your basic drinking and cooking requirements.
  • And for families with more than eight members, we recommend opting for water purifiers that offer at least twelve litres of storage capacity.

Therefore, based on the above considerations, you can opt for any water purifier with an appropriate storage tank capacity to meet your daily requirements.

Indicators and Alerts

Often neglected, but indicators and alerts on water purifiers are of the utmost importance. Some of the indicators and alerts are discussed below.

Water Level Indicator

The water level indicator lets you know the amount of purified water in the storage tank at all points. This allows you to have pure water every time as the tank can be filled accordingly when the water levels inside the storage tank start to decrease.

UV Fail Indicator

It is difficult to assess if the UV lamp has stopped working or not because of the invisible nature of UV light. And if the UV lamp stops working, the UV filtration will not take place in a water purifier. To counter this problem, many water purifier brands have come up with a UV Fail Indicator that makes use of LED indicator and audible alarms to let you know that the UV lamp has stopped working and needs to be replaced. This allows you to have pure drinking water always.

Filter Change Indicator

The filters used in a water purifier do the tough job of removing dissolved impurities like heavy metals, harmful chemicals, and disease-causing pathogens like bacteria and viruses from your water to provide you clean drinking water. These filters have to be changed periodically for better functioning and enhanced efficiency of the product. Most people often forget this point while using water purifiers. Therefore, a filter change indicator becomes extremely crucial as it lets you know beforehand that it’s time to change your filter. This makes sure that the purification process is up to the mark, and you always have pure drinking water.

LED Indicators

These LED indicators are of red, green, and yellow colour in most water purifiers. The red power indicator indicates that the water purifier is switched on. The green purification indicator lets you know that the purification process is on. And the yellow tank full indicator tells you that the storage tank is full.

These are some of the indicators that make using water purifiers more convenient.

Service and Maintenance

Since water purifiers comprise filters to remove the impurities from water, they also need cleaning and maintenance at regular intervals. This enhances the efficiency of the water purifier and makes it more durable and long-lasting. Therefore, the readiness of service and the total maintenance cost must be considered before buying a water purifier for your home. Most water purifiers come with an annual maintenance contract or an AMC between a manufacturer and the buyer that can range anywhere between 1,000 to 4,000 rupees. It is always better to compare the AMCs of different brands and get a clear idea of what parts they are covering and how many technician visits will be provided for free. There is no water purifier that is maintenance-free; therefore, it becomes essential that you opt for the one that has efficient service at a lower cost. Make sure to read the terms and conditions of your annual maintenance contract.

Installation

Most water purifiers have to be wall-mounted or can just be placed at the tabletop. It is essential that you pay attention to your convenience while installing a water purifier. It is more convenient to install it near the sink so that the water can be easily drained away. But, if there is no space, you can also place water purifiers on the table. Based on your preference, you can buy any of the models. Also, it is not easy to install water purifiers. Therefore, make sure that you take professional help only and always go for those water purifier brands that provide you with a fast and free installation service.

Brand

Before purchasing a water purifier, you must lookout for a trusted brand with excellent performance history. Some of the best brands in the Indian market include Kent, Eureka Forbes, HUL Pureit, Blue Star, and Livepure. We can vouch for these brands when it comes to the efficient water purification. But, if you are buying an uncertified water purifier, you must do extensive research about it and make sure that it has high positive reviews by the consumers on trusted websites.

Warranty

Most well-known and trusted brands offer at least one to two years of manufacturer’s warranty on water purifiers. The higher the warranty period, the better it is. Also, before purchasing a water purifier based on its high warranty period, make sure that you know what parts and services are covered under the manufacturer’s warranty.

Budget

Your budget is also an important consideration before you purchase a water purifier for yourself. In India, the prices might range between 6,000 to 25,000 rupees based on the brand and the features offered. Suppose you want a water purifier that has almost all the features. In that case, both the price and the annual maintenance cost of the water purifier will be on the higher side. Many people make this mistake, but you must remember that you don’t need all the features. You should select a water purifier based on your needs and requirements. This will not only help you reduce the overall cost but will also make your purchase effective. However, many brands in India offer high-end features at reasonable prices and low maintenance costs. You can always opt for such budgeted models.

Frequently Asked Questions:

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

An annual maintenance contract or AMC is a yearly maintenance contract between the manufacturer and the buyer of the water purifier. The cost of AMC for an RO water purifier can range anywhere between 1,000 to 4,000 rupees. The one starting from 1,000 rupees doesn’t include the cost of spare parts, which has to be charged extra. Whereas, AMCs of 3,000 to 4,000 rupees include all the parts of the water purifier. Usually, AMCs include three annual visits for regular check-ups of the water purifier by the company’s technician and one or at most two free emergency visits during the machine breakdown. There is no water purifier that needs zero maintenance; therefore, maintenance costs of water purifiers and the terms and conditions of AMCs by different brands must be considered before buying a water purifier for yourself.

What are TDS controllers in the water purifier?

A TDS controller or a TDS modulator is a manual device that controls the TDS level of water. It is often misunderstood, but the TDS controller does not purify the water but only lowers the TDS levels. It reduces the hardness of the water. RO water purifiers can reduce up to ninety per cent of hardness in the water. This means if the input water has a TDS of about 900, the resultant or the output water after filtration will have TDS of 90 only.

The above process is done by a TDS controller. When the water enters the reverse osmosis purifier, it is distributed into two parts. Part one of the water moves through the RO water purification process. This is what that lowers the TDS levels and removes other pollutants or impurities from the input water. The other part of the water is passed through UV and UF filters. Here the water is purified without reducing the TDS level. The output water is the combination of these two parts. The TDS levels in the output water are controlled by the amount of part two water in the mixture. Therefore, when coupled with UF or UV filters, a TDS controller ensures that over ninety-nine per cent protection is provided against water impurities or pollutants.

What is Mineraliser/Mineral Guard?

Though RO water purifiers do an amazing job in removing contaminants and purifying the water, these also remove certain essential nutrients from the water. Therefore, the resultant water is lacking in nutrients, which also makes the water taste bland. To counter this problem, many brands have come up with a mineralized that is nothing but extra filtration storage. It adds the removed minerals and essential nutrients back to the output water, making it more nutrient-dense. It also helps in maintaining
the natural pH balance of water. It also maintains the correct balance of alkali and acid in the water.

Mineralised works on the principle of ionisation and electrolysis. It is made up of different types of particles through which water flows from one end to another. In this process, the vital minerals and nutrients are added back to the water. Apart from the addition of minerals, a mineralised also reduces the acidic nature of filtered water, making it more suitable for consumption.

How much water is wasted with an RO water purifier?

The most significant disadvantage of using RO water purifiers is the wastage of water that happens along with the purification process. An average Reverse Osmosis or RO water purifier wastes around three litres of water for every one litre of water that gets purified. This means only twenty-five per cent of the input water is purified and made fit for consumption. In contrast, the rest seventy-five per cent is rejected as wastewater. Though, the percentage of rejected water depends on the RO water purifier being used and varies accordingly. This wastewater can be used in a lot of different ways depending on its TDS levels. So, make sure that you don’t just discard the reject water but re-use it smartly. This will help in saving a lot of water.

Why do RO water purifiers waste so much water?

Most Reverse Osmosis or RO  water purifiers use membrane technology to filter out impurities and pollutants from water. This process requires a lot more additional water to clean the filter, which gets discharged as waste or reject water through a pipe outlet. The reject water is almost three times more than the purified water and is high in impurities, which is not suitable for drinking and even bathing. However, brands like Kent have come up with Zero Water Wastage Technology that supposedly reduces the water wastage to zero. It does this by pushing the rejected water back to the overhead tank, where it gets diluted and can be reused as the usual tap water for common household requirements like mopping, cleaning, etc.

How do you use RO reject water?

Since a large amount of water is discarded when using a RO water purifier, there are a few things that you can do with the rejected water to reuse it. These include :
1. You can use the rejected RO water to water the plants. Make sure that the TDS level of rejected RO water is below 1000 ppm before watering the plants.
2. You can mix the tap water with the RO rejected water to mop the floors. You should always mix it with tap water first as RO water alone can result in some salt deposition on the floor if the TDS level is high.
3. The saline nature of the RO rejected water is suitable for cleaning the kitchen or sewage pipes at home.
4. You can also use the same water for flushing toilets.
These are some of the ways in which you can the RO rejected water.

Is the RO water purifier good for health?

Though RO purified water with extremely low TDS levels, i.e., below 300 ppm or from 50 to 250 ppm are devoid of certain essential minerals like calcium, magnesium, etc., RO purified water with TDS levels from 300 to 500 ppm are extremely beneficial for your health, and all the minerals are also retained. RO water purifiers remove heavy metals like lead, mercury, etc., along with other pollutants from water to make it fit for consumption, thereby preventing the risk of various water-borne diseases and organ damage. New age RO water purifiers come with the pH balance technology that maintains the pH level of water by balancing the acid and alkalis in water. This is particularly good for people who need extra care after surgery or in certain medical conditions. Today, almost every RO water purifier comes with a mineralised that adds the removed minerals back to the output water, making it pure and nutrient-dense. Therefore, RO water purifiers that don’t lose the essential minerals during the purification process are completely safe and good for your health.

Is boiled water better than the RO water?

Though boiling water is one of the most common and traditional water purification techniques, it still scores a little less than the RO purified water. This is because boiled water only kills the bacteria and other microorganisms that can cause various water-borne diseases, but it cannot remove toxic metals like mercury, lead, pesticides, solvents, etc. that contaminate the water. In contrast, RO water purifiers use advanced technologies to remove salts and heavy metals from water, thereby making it more suitable for everyday consumption. Also, boiling water in large amounts is not a very convenient process, especially in emergencies. Therefore, RO water purifiers are not only a better choice for the cleaning and purification process of water, but they are also more convenient to use in the long run.

Does boiling water remove TDS?

No, boiling water does not remove dissolved salts like nitrates, sulphates, lead, etc. from water. Also, it is seen that boiling can actually increase the amount of total dissolved solids or TDS in water, which can be really harmful. Some of these dissolved impurities can be very dangerous, for example, consuming lead can cause both physical and mental damage. Also, high levels of TDS in water can be harmful for the skin and hair too, resulting in dry, itchy skin, and more hair loss. Therefore, it is always better to invest in high-quality RO water purifier. RO water purifiers can remove almost 90% of TDS from water, making it softer, while getting rid of the possible damages of consuming water with high TDS levels.

What is the best TDS level for drinking water?

Total dissolved solids or TDS refers to the number of dissolved solids, both organic and inorganic materials like heavy metals, minerals, ions, etc. in a certain volume of water. These can seep into the water through various ways like fertilisers used in soil, chemicals from industrial waste, road salts, etc. It is either measured in mg/litre or parts per million (ppm). Generally, the TDS levels of 300 to 500 ppm are considered best for drinking water as it retains the taste and minerals of water efficiently. Anything lower than 300 ppm, particularly from 50 to 250 ppm, is often considered low. It is devoid of certain essential minerals that are vital for good health. TDS levels ranging from 600 to 900 ppm are not regarded as great either, and an RO water purifier is advised at this TDS level. Water having TDS levels between 1000 to 2000 ppm is not safe for drinking purposes. And, anything above 2000 ppm is hazardous and extremely unfit for consumption. Normal household filters are not suitable for such a high level of contamination. Therefore, it is best to invest in an RO water purifier that leaves you with 300 to 500 ppm of TDS, making it most appropriate for consumption.

What is a gravity-based water purifier?

Gravity based water purifiers are the simplest of all water purifiers and offer only the basic water purification. These use gravitational force from the higher compartment to the lower compartment to carry out the purification process. They come with sediment or sediment plus activated carbon filters, which are used to remove undissolved impurities that are usually larger in size like mud, sand, etc., certain microorganisms, and harmful chemicals. These also have a built-in storage tank, generally two storage tanks, one for storing impure or input water, and the other for storing pure or output water. These are only suitable for places with low TDS levels and also where water is not very contaminated with disease-causing pathogens like bacteria, viruses, etc.

Conclusion:

With increasing levels of impurities in water, investing in a high-quality water purifier is almost necessary for good health. In this article, we tried to cover everything that makes your water purifier purchase worth it. We discussed the different purification technologies and how to select the best water purifier according to your water source, types of impurities, and TDS levels.

After considering all the significant points and reviewing different water purifiers in quite a detail, our experts have selected Kent New Grand 8 litres RO+UV+UF+TDS Water Purifier as the best water purifier in India. The most significant advantage of this product is that it can treat almost all sources of water and remove many different kinds of contaminants like bacteria, viruses, harmful chemicals, etc. due to its multi-stage purification technology of RO + UV/UF. While removing impurities, it makes sure that the essential minerals are retained in the purified water, a feature that most RO water purifiers neglect. It also has Save Water Technology to reduce water wastage while purifying it. The eight-litre water storage tank and the purification speed of twenty litres per hour ensure that you never go out of pure drinking water. The one-year warranty period and convenient after-sales service ensure that the quality of the product is always maintained. Moreover, Kent is a trusted brand with numerous certifications and awards under its cap, which assures the customers of the product’s quality. Therefore, advanced technology, reasonable pricing, and brand assurance make Kent New Grand water purifier a must-buy product for Indian households.

Which water purifier did you choose? Was the article helpful, or are there any doubts regarding water purifiers and their functioning still left? Please write to us in the comment section below. We would love to hear from you.

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