Water Purifier

8 Best Water Purifiers in India (2023)

Water purifiers are a must for every home. With the amount of pollution both in the air and in water, a good water purifier is a saviour in keeping every member of our family healthy. Ensuring the water we drink is safe from harmful bacteria and chemicals is of utmost importance. According to statistics, in 2023, the global water purifier market reached US$ 35.83 billion. There are many water purifiers in India, and this makes it confusing to choose the best water purifier for home.

A lot of aspects are to be kept in mind when buying a water purifier. If you are tired of searching for the best water filter, search no more! Here’s a complete list of best water purifiers in India 2023 to choose from. The detailed guide will help you understand the various water purification technologies and the best water filter brands available in the Indian market. 

Table of Contents:

1) Kent New Grand 8-Litre, RO + UV+ UF + TDS 20 litre / hr Water Purifier (White)


Voted as one of the most trusted water purifier brands in India, Kent has made a place in almost every Indian home. Its unique next-gen RO water purifiers follow multiple purification process of RO + UV + UF + TDS control. It provides pure and natural mineral-rich water. The all-new Kent Grand RO is the brand’s best RO water purifier with positive customer reviews. The inbuilt TDS Controller allows retaining desired natural minerals in the purified drinking water. Kent Grand 11076, with its transparent design, is suitable for homes and offices that use brackish/tap water/municipal corporation water supply. The 8-litre storage tank is made of approved food-grade plastic to avoid any form of contamination. Kent is a business giant and recognizes the severity of saving energy. Its 60W energy consumption unit sets an example of quality infused with sensibility.


  • Mineral RO Technology

Kent Grand’smineral RO technology with its in-built TDS controller helps retain essential minerals in the water you drink while eliminating all form of contaminants. Its next-generation RO feature promises pure drinking water every time, which is rich in natural minerals and is healthy and tasty.

  • Water Level Indicator

Kent’s advanced water purifier comes with a built-in water level indicator that keeps you updated with the purified water levels in its storage tank. Whenever there is a decrease in the level of purified water, the indicator informs you of the shortage. You may switch on the machine according to this water level indicator.

  • High Water Storage Capacity

Its 8 litres water storage tank is capable of holding a huge volume of purified water. With its 20 L/per purification capacity assures you purified water at a faster speed than any other purifier at this budget. This high water storage tank is efficient even during power cuts which hold purified water and ensures constant supply to safe drinking water.

  • Multi-Stage Purification Process

Kent Grand provides 100% purified water. Its RO technology follows multiple purification process of RO + UV + UF + TDS control and guarantees water which is safe to drink. It filters dissolved impurities like rust, arsenic, fluorides and pesticides while killing harmful bacteria and viruses.

  • Retains Essential Minerals

Kent Grand water purifiers enabled with multiple purification process eliminates harmful viruses and bacteria from water while retaining its essential natural minerals. And this is because of its in-built TDS controller. This technology allows your water to sustain only the natural minerals required, making your water suitable and healthy for consumption.

  • All-India Customer Service Network

Kent is India’s most trusted water purifier brands for numerous reasons. One of it is its PAN India customer service centres. Professional technicians with 24*7 prompt service are what makes Kent, the best water filter manufacturers and providers in India.

Product Details

  • Product Dimensions: 39.9 x 25.5 x 53.5 cm; 9.4 Kilograms
  • Item Model Number: 11076
  • Item Weight: 9 kg 400 g
  • Item Dimensions LxWxH: 39.9 x 25.5 x 53.5 Centimeters
  • Included Components: Kent Grand Mineral RO Water Purifier-1 No., 3 Way Connector-1 No., SS Ball Valve- 1 No., Food Grade Pipe 1/4” (White)- 2.5 m, Food Grade Pipe 3/8” (White)- 2.5 m, User manual- 1 No., Screw & Plastic Inserts- 02 No., Sticker Center Drill- 01.

2) Eureka Forbes AquaSure (RO+UV+MTDS) 7L, 6 stages of purification Water Purifier (White)


Built with the vision to create a safe and healthy environment, Eureka Forbes has developed advanced water purifiers suited for every home. Eureka Forbes AquaSure’s RO+UV+MTDS technology, along with 6 stages of the purification process is ideal for serving safe drinking water. The regulator allows controlling the TDS levels in the water manually, ensuring the water you drink is not only safe but healthy and tasty too. It can be used for TDS up to 2000 ppm while consuming only 40 Watts of energy. Eureka Forbes AquaSure from Aquaguard Delight is suitable for areas with a shortage of water supply. You can manually control the TDS levels to ensure the water you drink is healthy. Booster Pump is necessary for regulating water pressure in case the pressure is less than 0.3kg/cm sq.


  • In-Build High Storage Tank

 Eureka Forbes AquaSure from Aquaguard Delight comes with a large storage tank of 7 litres. This assures continuous access to safe and purified water with its in-built water tank.Effective even during no access to electricity, AquaSure Delight comes with the benefit of providing safe drinking water at all times.

  • 100% Pure Water

AquaSure Delight’s TDC Controller allows you to adjust the taste of water manually according to your water source.  This ensures the water you drink is not only safe but healthy and tasty too. It can be used for TDS up to 2000 ppm while consuming only 40 Watts of energy.

  • 6 Stages Purification Technology

Eureka Forbes AquaSure’s RO+UV+MTDS technology, along with 6 stages of the purification process is ideal for serving safe drinking water. This multiple filtration process involves filtration, chemi block, taste adjuster, RO membrane, mineral cartridges and UV chamber purification providing 100% safe and healthy water.

  • Smart LED Indicators

AquaSure Delight’s is a smart water filter with in-built LED indicators. Its smart Power On, Purification On, and Tank Full Status indicators are features that make the water filter truly smart. These features keep you updated and without water and electricity wastage.

  • Energy Saving Mode

A key feature of AquaSure Delight is its efficiency in saving electricity. This Energy Saving Mode enabled smart water purifier switches off the power supply automatically once the storage tank is full. It is capable of cleaning TDS up to 2000 ppm while consuming only 40 Watts of energy.

  • Elegant & Compact Design

Available in white and black, AquaSure Delight is sleek and compact. Designed keeping your kitchen space utility in mind, this water purifier with RO+UV+MTDS technology easily fits anywhere in your kitchen. Its sleekness and colour combination is sure to compliment your kitchen and your home in every way.

  • Long Cartridge Life

Eureka Forbes AquaSure from Aquaguard Delight comes with a 6000-litre cartridge life. This long shelf life ensures absolute safety in the water dispensed around a year. These water filter cartridges do not clog easily, hence remains effective at filtering out contaminants and chemical compounds for a longer period.

  • Flexible Installation

The sleek and compact design allows the water purifier to be placed anywhere in a kitchen according to your kitchen size. You can place it on your kitchen counters or mount it on any wall at your convenience. Easy installation avoids complicated drilling and saves time.

Product Details

  • Product Dimensions: 23.8 x 30 x 43 cm; 5.9 Kilograms
  • Item Model Number: Delight RO+UV+MTDS
  • Item Weight: 5 kg 900 g
  • Item Dimensions LxWxH: 23.8 x 30 x 43 Centimeters
  • Included Components: Installation Kit and User Manual

3) HUL Pureit Copper+ Mineral RO + UV + MF 7 stage, 8 litres Water Purifier (Black & Copper)


Pureit Copper + Mineral RO + UV + MF are of the best RO purifier that brings together the benefits of copper-infused with 100% RO purified water. The water dispensed undergoes 7 stages of purification, eliminating harmful viruses and bacteria. Available in black and copper, the water filter comes with 8 litres storage tank and purification capacity of up to 28 litres per hour.HUL Pureit Copper+ RO water purifier’s unique Copper Charge Technology(TM) infuses the goodness of copper in water. Water with the benefits of copper is anti-microbial and anti-inflammatory. HUL Pureit Copper technology charges water with 99.8% pure copper,making sure the water is fresh at all times.


  • Copper Charge Technology

Pureit Copper Ro + Mineral charges water with 99.8% pure copper. This amount ensures the water you drink is healthy, safe and infused with the goodness of copper. Water with the benefits of copper is anti-microbial and anti-inflammatory. Pureit’s unique Copper Charge Technology also boosts metabolism and improves digestion.

  • 7 Stage Advanced Purification with RO + UV + MF

Pureit Copper + Mineral RO + UV + MF dispense water which undergoes 7 stages of purification, eliminating harmful viruses and bacteria. These stages make sure the water is 100% safe infused with the benefits of copper. The copper enriched RO + UF + MF water boosts your family’s immunity and removes harmful viruses and bacteria.

  • Smart Copper Auto-Cleaning Technology

Bring home Pureit Copper RO and immune your family from water-borne diseases. Its intelligent Copper Auto-Cleaning Technology is a smart feature, sensing and scheduling copper-auto cleaning. This makes the water you drink fresh and charged with copper at all times.

  • Precise Copper Dosing

Precise Copper Dosing allows the infusion of copper at theright amount that a healthy body requires. So, every glass of water you drink has the proportionate amount of copped mixed with the RO purified water.

  • High Water Storage Tank

Pureit Copper + Mineral RO + UV + MF is a good choice water filter for home with more than four members. Its 8 litres water storage tank is capable of holding a large volume of purified RO water without having to use electricity for every time you drink water. It’s economical and saves energy—suits best for places with frequent power cuts.

  • Dual Water Dispensing

Pureit’s Dual Water dispensing method is an advanced system, thoughtfully designed for all. This dual feature gives you the choice of Copper Charged RO water and normal RO water. So you have the option to choose between the types of water you wish to drink for every glass.

 Product Details:-

  • Product Dimensions: 36.1 x 35 x 44.7 cm; 9.5 Kilograms
  • Item Model Number: Copper + Mineral RO+UV+MF
  • Item Weight: 9 kg 500 g
  • Item Dimensions LxWxH: 36.1 x 35 x 44.7 Centimeters
  • Included Components: Water Purifier and Pre Sediment Filter Installation Kit 

4) KENT Wonder Star RO+UF+UV+TDS 7 litres Water Purifier (White)


This RO+UV+UF+TDS water purifier is equipped with an advanced double purification system, making it one of the best RO purifier you can buy in 2023. The patented double purification system removes heavy metals, viruses, bacteria, chemicals and other dissolved impurities in the water, no matter its source. The purifier is perfectly suited to purify water from brackish sources, tap and municipal water supply. The purifier filters water at a fast rate of 15 litres every hour. It retains all the essential minerals in water after the purification process using Kent’s patented Mineral ROTM technology. With 7 litres of storage, the Kent Wonder Star keeps all the water free from contamination using the in-tank UV protection.


  1. Kent Wonder Star

This elegant water purifier comes with a double purification process with RO, UF, TDS control and in-tank UV purification. It removes dissolved impurities ranging whether are harmful chemicals or pathogens but retains natural & essential minerals.

  1. Patented Mineral RO technology

The water purifier uses Mineral ROTM technology patented by Kent to retain all naturally occurring essential minerals like Calcium, Sodium and Magnesium etc., using the TDS controller.

  1. Double Purification

The Kent Wonder Star uses double purification technology using RO and UF to remove all dissolved impurities and harmful microorganisms from the water. This ensures your drinking water is always safe. 

  1. ABS Body Construction

The water purifier is not only elegant but also durable as it’s made out of ABS food-grade plastic.

  1. Purifies Water from All Sources

The technologically advanced water purifier is ideal for getting safe drinking water from different water sources. It’s suitable for purifying municipal water supply, tap water and water from brackish sources.

  1. Detachable Tank

The Kent water purifier is equipped with a detachable storage tank made of high-grade food plastic. You can easily remove and clean it without needing the help of a technician.

  1. In-Tank UV Purification

This water purifier has in-tank UV protection, which guarantees that the purified water is kept safe from any contamination.

  1. 7 Litres Storage Capacity

The Kent Wonder Star filters water at a fast rate of 15 litres in an hour. It stores the purified water in a seven-litre storage tank, so you don’t have to wait to get safe drinking water.

  1. PAN India Service Network

In case of any inconvenience, you can get in touch with our expert technicians immediately. With more than 1500 service centres all over India, you won’t have to wait for long to get our help.

Product Details:-

  • Product Dimensions: 39 x 28.5 x 44 cm
  • Warranty: 1 Year
  • Item model number: 11059
  • Item Weight: 7 kg 800 g
  • Item Dimensions LxWxH: 39 x 28.5 x 44 Centimeters
  • Included Components: Kent Wonder Star Water Purifier- 01 No., Pipe- 2 Nos., Connector- 01 No., Valive- 01 No., User Manual- 01 No

5) KENT Supreme Extra, Zero Water Wastage, RO + UV + UF + Alkaline + TDS Control + UV in Tank, 8 L Tank, 20 LPH Water Purifier (White)


Ranked among the 10 best water purifiers in IndiaKENT Supreme Extra is equipped with Zero Wastage Water Technology and In-Tank UV Disinfection technology. It is an advanced RO Water Purifier with RO+UV+UF+Alkaline+TDS Control+ In-Tank UV Disinfection. With its 8 litres water storage capacity, KENT Supreme Extra permits the continuous supply of filtered water, even during no access to electricity. KENT Supreme Extra’s Zero Water wastage technology ensures that no drop of water is wasted during the filtration process. It recirculates the rejected water to Kent’s overhead tank using the water booster pump. The water filter machine is suitable for filtering brackish / tap water/ municipal water supply. Its fully automatic system with auto-on and auto-off function make sure that you never run out of pure filtered water. The alkaline feature in this filter helps to maintain the pH balance of water, keeping it between 8.5-9.5 pH levels. This makes the water alkaline and healthy to drink.


  • Mineral RO Technology

Kent’s parent Mineral RO Technology retains essential minerals present in water, making it safe and healthy for human consumption. RO + UV + UF removes dissolved impurities, viruses, bacteria and cysts. TDS controller helps to retain all the minerals essential for human health.

  • In-Tank UV Disinfection

Kent’s next-generation water purifier Supreme Extra comes with an additional in-tank UV lamp. This lamp kills micro-organisms of any sort in the storage tank to dispense healthy, and RO purified drinking water for longer durations. This latest feature makes Kent Supreme Extra unique as very few come with such innovative technology.

  • Computer Controlled & Automatic Operations

Filter Change Alarm, UV Fail Alarm, auto-on and auto-off functions add to the unique value of Kent Supreme Extra. These automatic computer-controlled operations keep you informed regarding filter replacement time, signals when the UV lamp becomes ineffective and make sure there’s always access to pure water.

  • Retains Essential Minerals

Kent Supreme Extra’s in-built TDS Controller retains all essential minerals so that the water you drink is enriched with valuable minerals. Natural minerals are essential for maintaining a healthy life. Water lacking these essential minerals can lead to mineral deficiency in the body. With Kent Supreme Extra, stay healthy at all times.

  • Multiple Purification Process 100% Pure Water

Its multiple water purification technologies of RO+UV+UF+TDS Control+Alkaline makes water 100% safe and healthy. It also adds taste to the water. It removes dissolved impurities such as arsenic, fluoride, rust, pesticides and kills bacteria and viruses. This purified alkaline water is now good for your consumption.

  • Alkaline Water Supply

Kent Supreme Extra dispenses alkaline water for your consumption. The high pH level than the regular water is essential in neutralizing the acids in your body. The pH is increased to 8.0-9.5 in maintaining the alkalinity of water, making it suitable for thy body and mind regulations.

  • High Storage and Purification Capacity

8 litres water storage capacity makes Kent Supreme Extra more convenient for you and your family. It has a purification capacity of 20 L/hr ensuring continuous access to RO purified water even in the absence of electricity.

  • Zero Water Wastage Policy

Zero Water Wastage Technology is one of Kent’s futuristic approaches in building a better nation for us and the generations to come. This feature ensures that no water is wasted during the filtration process. The rejected water is re-directed to the overhead tank using its pump.

Product Details:-

  • Product Dimensions: 40 x 25 x 52.5 cm; 8.5 Kilograms
  • Item Model Number: 11113
  • Item Weight: 8 kg 500 g
  • Item Dimensions LxWxH: 40 x 25 x 52.5 Centimeters
  • Included Components: RO

6) HUL Pureit Ultima Mineral RO + UV + MF 7 stage, 10 litres Water Purifier (Black)


HUL Pureit Ultima Mineral RO + UV + MF is the best RO purifier for home that comes at an affordable price. Its 10 litres storage capacity is suitable for families with more than five to six members. HUL Pureit Ultima water purifier comes with an advanced alert system. It alerts you days before the GermKill cartridge stops functioning. Features like Neon Flash Belt and TDS modulator indicate whenever the water filter machine is used; while improving the taste of your water. Its advanced RO + UV + MF system is abled with 28 litres of water purification every hour. HUL Pureit Ultima Mineral can be effectively used for TDS up to 2000 ppm which can be adjusted manually. The mineral cartridge in the water purifier adds essential minerals like magnesium and calcium to enhance the taste of water.


  • Soft Touch Button

HUL Pureit Ultima is enabled with an electronically controlled soft-touch button for dispensing the purified water.

  • 100% RO Purified Water

Get 100% RO purified water with Pureit Ultima Mineral RO + UV + MF. It purifies up to 28 litres of water every hour which is free of every contaminant. This water purifier removes chemicals such as mercury and lead, which are extremely harmful to you.

  • Purity Indicator

Its highly powerful sensors sense water quality up to 5000 times every second. This indicated how pure your water is at all times.

  • 10 Litres Water Storage Capacity

Get HUL Pureit Ultima and never run out of purified water. Its 10 litres storage capacity is suitable for families with more than five to six members. This large volume water storage tank is ideal for places with frequent power cuts and places which have less access to electricity.

  • Digital Display Panel

Digital Display Panel indicates the quality of water and alerts you days before the GermKill cartridge stops functioning. This smart feature keeps you updated so that you also have access to purified water.

  • Multi-Purification Technology with RO + UV + MF

With HUL Pureit Ultima’s 7 stages of water purification process, every drop of water you drink is fresh, safe and healthy. It is effective for TDS up to 2000 ppm, which can be adjusted manually.

 Product Details:-

  • Is Discontinued By Manufacturer: No

  • Package Dimensions: 68 x 44 x 39.5 cm; 12 Kilograms

  • Item Model Number: Pureit Ultima
  • Manufacturer: HUL Pureit
  • Item Weight: 12 kg

7) Livpure Zinger Smart 6.5 litres, 70% water recovery with Copper+RO+UV+UF+Mineralizer+7 Stage Purification Electric Copper Water Purifier


Livpure Zinger Smart HR70 makes it on our list of best water purifiers with a host of advanced features. It comes with HR70 technology, which recovers 70% water during the purification process and saves up to 20,000 litres of water every year. The water purifier is equipped with a 7-Stage Filtration process, including RO, UF, UV, Mineralizer and Copper treatment to make the water free from harmful particles and chemicals. The Copper cartridge adds the benefits of natural copper to your drinking water. This smart appliance can be connected to the Livpure App to enjoy smart features like Real-time water consumption tracking and service call log. It’s made with a unique design and colour to complement the aesthetics of your kitchen and, additional features like an Interactive LED display, RO 1500 TDS membrane, in-tank UV sterilization and insect-proof storage tank.


  1. 7-Stage Filtration

Using a 7-Stage purification process, this water purifier removes harmful elements from your drinking water. This water is free from any harmful bacteria, viruses, chemicals and other contaminants.

  1. 70% Water Recovery

The HR70 filtration technology helps to purify water without wasting it. This water purifier recovers about 70% water, which saves about 20,000 litres of water annually.

  1. Copper 29

The Livpure Zinger Copper feature a Copper 29 cartridge to add a layer of protection to the filtration process. It helps in improving immunity and eliminates harmful components during the purification process.

  1. Storage Tank

The 6.5 litres storage tank is high-quality and insect-proof, thus, keeping the purified drinking water safe. The water purifier also filters water quickly, so you don’t have to wait for long for this tank to fill up with clean drinking water.

  1. LED Indicators

This easy-to-use appliance comes with user-friendly indicative buttons. These let you quickly check the water level in the tank, power supply, filter life, connectivity, and alerts for leakage, UV fault and open front cover.

  1. UV Disinfection

The Livpure Zinger Copper is equipped with an in-tank UV sterilization unit to keep the purified water free from any possible contamination.

Product Details:-

  • Product Dimensions:5 x 24 x 49.5 cm
  • Warranty: 1 Year
  • Item Weight: 8 kg 100 g
  • Item Dimensions LxWxH:5 x 24 x 49.5 Centimeters
  • Included Components: User manual warranty card, installation kit

8) Aquaguard Aura 7L water purifier 6 stages of purification UV e-boiling+Ultra Filtration with Active Copper (Black & Copper)


The Aquaguard Aura UV+UF is built with superior design and advanced features. It has six stages of purification to make the drinking water safe from contaminants and 7litres of storage capacity so that you don’t have to wait to get pure water. UV e-boiling ensures that every drop of water is treated like water boiled for 20 minutes, making it healthy and safe. Ultra Filtration makes the water safe from bacteria and imparts crystal-clear clarity to the water. Together UV+UF removes viruses from water. With Mineral Guard technology, this water purifier retains essential minerals while Active Copper provides the goodness of copper to the purified water. It can be used for TDS of up to 200 and thus, recommended for Municipal water only.


  1. Unique UV boiling

The UV e-boiling technology in this water purifier makes sure that the water is as safe and pure as water boiled for over 20 minutes.

  1. Ultra Filtration

It removes harmful pathogens from the water and makes it crystal clear. Together with UV, UF removes viruses from the drinking water.

  1. Advanced Mineral Guard Technology

This helps to retain natural & essential minerals like calcium and magnesium in purified water, providing a perfect blend of safe and healthy water.

  1. Patented Active Copper Technology

The patented copper cartridge infuses copper ions in the drinking water along with other essential minerals.

  1. Supreme Aesthetics

With a compact and stylish design, the water purifier enhances the look of your kitchen.

  1. High Storage Capacity

The purifier has a large storage tank with 7 litres of capacity, so you don’t have to wait to get pure and healthy water.

  1. Flexible Installation

You can have this water purifier mounted on a wall or keep it on the countertop.

  1. Service within 5 Km

You will find our services within a 5 km range.

Technical Details:-

  • Product Dimensions:1 x 31.6 x 46.2 cm
  • Warranty: 1 Year
  • Item Model Number: GWPDAURUF00000
  • Item Weight: 6 kg 400 g
  • Item Dimensions LxWxH:1 x 31.6 x 46.2 Centimeters
  • Included Components: Plumbing kit, accessories, product, power supply adapter & bracket for adapter

What are the Different Types of Water Purifiers?

Before you opt for the best water purifier in India, there are certain things you must knowto choose according to your requirements. There are many brands in India providing quality water purifiers. Likewise, there are many types of water purifiers in the market with the various working mechanism. Starting from the candle filters to the state-of-the-art advanced multi-stage water purifiers, you have endless options. The cost of purifiers also depends on the type you choose.

1. Basic Candle Filters

The Candle Filters are basic pressure filters, working on a batch cycle used to remove turbidity, pathogens and suspended materials. The purification process is a simple physical process of mechanical trapping and absorption on ceramic candles placed in the bottom. The water passes through the candle to reach the lower container and is collected here.This process treats the water and is safe to drink from the storage. These filters require no electricity and are easy to assemble. Frequent scrubbing with a brush and manual cleaning is required to keep the filter clean and maintain hygiene.


  • Simple, easy to use and cost-effective
  • Eliminates suspended particles, pathogens and turbidity
  • Improves taste and smell
  • Keeps water cool and clean
  • Compatible with both gravity and pressure filters
  • Natural filtering like activated carbon filets
  • Prolonged service life
  • No electricity wastage
  • No water wastage


  • Not efficient in removing chemical contaminants
  • Is not capable of removing all pathogens and microbes
  • Not handy and high chances of breaking while transporting
  • High turbidity plugs candle pores
  • Low water flow rate
  • Candles need frequent changes

2. Gravity-Based Water Purifier

As the name suggests, this purifier works on gravitational force to purify water. This water purifier does not require any electricity or running water. As the water travels from one chamber to the other, the visible dirt’s and pollutants are eliminated. Gravity-based water purifiers contain activated carbon module which removes viruses, parasites, and other impurities present in water. These activated carbons also called UF acts like a hollow fibrous membrane, where impurities stick.


  • Does not require electricity
  • Removes most of the germs and bacteria
  • Does not require running water
  • Easy to maintain and use
  • Improves water clarity
  • Removes suspended particles and turbidity and organic pollutants
  • Good storage capacity


  • Not effective in removing harmful disease-causing microbes and heavy metals
  • Premature filter clogging
  • High maintenances cost
  • Regular cleaning is required to avoid tank contamination
  • Saturation of activated carbon
  • Chemical batteries and activated carbon needs frequent replacement

3. Reverse Osmosis Water Purifiers

Reverse Osmosis (RO) water purifiers can treat hard water. Since candle filters and gravity-based filters cannot treat heavy metals like arsenic and mercury, RO technology gained momentum. The water passes through a semi-permeable membrane removing nitrates, fluorides, sodium, copper, arsenic and other dissolved salts and impurities. Utilized in homes and offices, RO water purifier is capable of treating water with TDS, disease-causing microbes. These are the finest available purifiers in the market today.


  • The best solution for treating waters ensuring safe drinking water
  • Eliminates toxins like lead, mercury, fluoride, chlorine
  • Removes Cryptosporidium in river, lake and public supply water
  • Improves taste, colour and smell of the water
  • Safe and easy maintenance


  • Requires electricity to run
  • Needs running water
  • Produces a lot of wastewater
  • Removes essential minerals such as iron, magnesium, calcium and sodium
  • Takes more time to purify
  • Difficult to make out in case of RO membrane breakage
  • Costlier compared to other filters

4. Ultraviolet Water Purifiers

UV or Ultraviolet water filters uses technology which has time and again proven their capability in the water purification process. The ultraviolet radiation is used to get rid of viruses, germs, disease-causing micro-organisms, pathogens and cysts. Ultraviolet purifiers do not remove dissolved salts from water, making the water rich in essential minerals.


  • Removes bacteria and viruses causing water-borne diseases
  • No wastage of water during the filtration process
  • Low maintenance cost
  • No use of chemicals during the purification process
  • Water is rich in minerals and salts
  • High purification rate- delivers 2-4L of pure water in a minute
  • Low energy consumption


  • Does not eliminate dissolved salts
  • Required running water
  • Not effective in removing toxic chemicals like chlorine and fluoride

5. Ultrafiltration water Purifiers

UF or Ultrafiltration water purifiers envisage the use of ultra-filtration membranes to treat water. As the water passes through these UF membranes traps bacteria, suspended particles, and virus present in the water to make it safe for drinking. UF have larger holes as compared to the Ultraviolet water purifiers and allows the dissolved salts to pass through.


  • Does not require electricity
  • Removes all kinds of bacteria and germ from the water
  • Easy maintenance
  • Long filter life
  • No use of chemicals to treat water
  • Capable of filtering muddy water
  • Water retains essential minerals


  • Does not remove solid wastes
  • Frequent cleaning is required
  • Cannot remove heavy metals like arsenic, lead
  • Inefficient for treating water with high TDS levels

6. Multi-stage Water Purifiers

Multi-stage water filters are the contemporary water filters with a combination of all the systems stated above. There are several variations you get in the market such as,

RO + UV: This combination makes sure you get high-quality pure water. Germs, bacteria, viruses, dissolved salts and heavy metals are effectively treated in this combination.

RO + UV + UF: This variation is a step up and provides you with the best quality water. This combination is best suited for areas with high TDS levels.

Pre and Post Activated Carbon Filters: Capable of absorbing toxic chemicals and various other pesticides, this system is very useful for improving the water odour. The lifespan of RO is also improved in this system.

Today’s filters have a combination of the sediment filters, RO membrane, pre-activated carbon filters, UV systems, UF technology and post-carbon activated membrane.


  • Powerful in treating hard water with high TDS levels
  • Enhances the taste of water
  • Removes all kinds of germs, bacteria, heavy materials and dissolved salts


  • Continuous supply of electricity
  • High maintenance cost

So now that you are aware of the types of water purifier, knowing to choose the best one is important.

How to Choose the Best Water Purifier for Home?

When choosing the best water purifier for home, a lot of factors have to be kept in mind. Apart from the types of water filter, if the following lists are religiously followed, chances of getting the best water purifier at an economical price are guaranteed.

Things to consider when buying in a water purifier for your home:

  • Water Quality:

The first step is testing the quality of your tap water in terms of its hardness, TDS (Total Dissolved Solids) level and salinity. TDS as per the WHO guidelines contains calcium, magnesium, sodium, potassium, bicarbonates, sulphates and chloride, and small amounts of organic matter in water.  TDS level exceeding 1000mg/litre is harmful and makes it unsuitable for drinking. Once your source is tested, the next criterion is water filter machines purification process.

  • Purification Technology:

Now that you know the quality of your tap water, it’s easy to customize your purification technology suiting you best. If your tap water has a TDS level of more than 500ppm, going for Reverse Osmosis is advisable. If the TDS is lower than 200ppm, Ultraviolet filtration technology is enough.

  • Water Storage Capacity:

Water storage capacity should be considered before purchasing any water purifier. According to the daily water requirement, it is advised to choose your water purifier. If your family has not more than 4 members then going for a lower storage capacity will do the work. This ensures lesser wastage of water. While if you have a family with more than five members, choosing a water filter with higher water storage capacity adds less pressure on the filter, increasing the product longevity.

  • Product Specifications:

Knowing the product details is crucial. Specifications in terms of design and working mechanisms help to know the performance of the products. You should always make sure that it is made up of engineered grade plastic and food-grade too. Plastic adds to water toxicity. Only if the water purifier is food-grade certified, is it good to health. To avoid risks, stainless steel storage options are doing the rounds. Also, the filter’s electricity consumption rate should be considered. Always checking the electricity consumption rate helps in saving your monthly electricity bill.

  • Certifications:

Buying water filters with proper validated certifications is important. Products with ISI, WQA, or NSF certifications help to establish the authenticity of the brand.

Is RO Water Purifier Better Than UV Water Purifier?

Reverse Osmosis and Ultraviolet water purification technologies are viable technologies for drinking unfiltered tap water. Both systems have different functioning with advantages and disadvantages. Reverse osmosis uses a semi-permeable membrane to filter nitrates, fluorides, sodium, copper, arsenic and other dissolved salts and impurities. Ultraviolet technology, on the other hand, uses strong UV rays to kills germs, disease-causing microbes and harmful bacteria from water.  Both more and less does the same work of water purification, but UV provides water that is completely free of pathogens.

Which is better?

Well, to answer this, primarily, you need to be aware of the key differentiation between the two types of water filter.

  • RO Water Purifier can remove all the dissolved minerals, salts and chemicals from the water. RO is best suited for tap water consisting of contaminations on different levels. However, UV cannot separate the dissolved minerals from the water.
  • RO purifiers have a built-in pre-filtration system that allows clearing muddy and sediment-water while UV purifiers cannot work in muddy water. Therefore UV filters are not ideal for areas with high TDS level.
  • RO system can lead to water wastage, but UV technology ensures zero water wastage.
  • RO purifiers are way expensive than UV water purifiers. This is because of RO’s multi-scale performance and lesser cartridge life.
  • While RO changes the taste and odour of water, UV doesn’t alter the taste.
  • The maintenance cost of RO is also higher than that of UV water purifiers.

Reverse Osmosis- Useful or Waste?

For quite some time now, the question of water wastage in reserve osmosis has been doing rounds. The fact for sure, there is water wastage in RO water purification technology. If reports are to be believed, for every one litre of drinkable water, the technology throws out three to four litres of water. To put it simply, reverse osmosis uses more water than it produces.  What can be done instead of wasting water is to store the water for later house-hold use. Mopping the floor, cleaning dishes, washing vegetables and clothes can be done with the excess water. This ensures the efficient and effective utilization of water.

What Is the Difference Between a Storage Tank Water Purifier and an Instant Water Purifier?

Both the water purifiers come with their own advantages and disadvantages. Storage tank water purifiers are capable of storing purified water for later use. The instant water purifier, on the other hand, almost immediately dispenses filtered water. While storage tank comes with the benefit of dispensing filtered water even in the absence of electricity, instant water purifiers are unable to operate during power cuts. Likewise, tank-less or instant filters are portable and easy to carry because of their lighter weight and compact design.

Storage tank water filters are comparatively heavier owing to their large size and extra storage space. Instant water purifiers use instant heating process before dispensing water. It uses electricity only when it has to give out filtered water. Unlike the instant filters, storage filters have to heat continuously, to keep the water warm and purified.

Depending on the tank capacity, a storage purifier uses approximately 300W to 500W, adding to the electricity cost.  No storage chamber means zero contamination. Any place exposed to moisture and water tends to build bacterial growth. Periodic maintenance is needed to keep the storage free from bacterial and algae growth. Plastic tanks are not hygienic to store water as bacteria-filled bio-films grow and stick to the chamber’s wall.

RO UV Water Purifier VS UF Water Purifier

Reverse Osmosis (RO), Ultraviolet (UV) and Ultrafiltration (UF) are the most common types of water purifiers available in the market. While all three of them are used for obtaining rich purified drinking water, there is often confusion in choosing which water purifier to buy that meets our requirement. There are many technology combinations for water purifier. These variations are only considering the nature of consumer demands over the years. Speaking of the water purifier combinations, RO + UV / RO + UF/ RO + UV + UF are the major divisions.  

RO + UV: Water Purifiers with this combination uses Reverse Osmosis and Ultraviolet Filtration technologies, combing both for better results. While RO filters out all the bacteria and viruses, UV kills all the bacteria and viruses without eliminating them. This combination is best as one eliminates the bacteria and viruses, and the later one kills them. RO requires high water flow to work properly while UV is optimized to work with normal water flow.

When your filter is equipped with both the technologies, in case of water pressure fluctuation, your filter can dispense purified water. With RO technology is integrated with UV technology, the disadvantage of one is covered with the features of the other one. There is a health symbiosis! 

RO + UF: The major drawback of UF technology is its inability to filter harmful salts and heavy metals dissolved in water. Arsenic, lead, mercury, cadmium etc. are toxic metalloids. Water with a high amount of heavy metals is carcinogenic and can also cause fatal diseases.

However, when you choose the RO + UF technology water filter, RO in the filter eliminates all of these contaminants. The water you drink is hence 100% and safe. But the major advantage of using filters with UF technology is its ability to turn muddy water clean. UV is unable to process in muddy water.

Carbon and sediment filters used in UF technology are the pillars in clearing water. RO + UF are efficient combinations for water purifiers as both are equally equipped, and the cons of one are the pros for the other. 

The third combination is the RO + UV + UF + TDS water purifier. This combination requires water to pass through a multi-stage purification process to achieve the best quality water that is pure and healthy. It is one of the most searched combinations because of its ability to produce drinking water that is 100% pure. The TDS controller here does a significant job. It controls the amount of TDS and softens hard water. 

Activated Carbon Water Purifier

Activated carbon has made its way in the modern world as an essential component for many reasons. Industries such as medical, agricultural and cosmetic are engaging more in the usefulness of activated carbon for different benefits of activated carbon. For its absorption property, manufacturers of water purifiers are also using activated carbon for dispensing quality drinking water. Before stating its properties, it is important to know what activated carbon is and how it functions.

What is Activated Carbon?

Activated Carbon or Activated Charcoal is a form of processes carbon with a large surface area. One gram of activated carbon has a surface area of 5,400 square feet with 3,000 m2 (32,000 square feet) being immediately achievable. This wide range makes it compatible for use over various applications. It undergoes chemical processing to increase its absorption properties. 

Activates Carbons are derived from many things such as bamboo, willow peat, coconut shells, coir, wood, sawdust, coal and petroleum pitch.  

Applications: Activated carbons are used in multiple fields. From its role in sewage treatment to the purification of gold, air purification, water purification, metal extraction, teeth whitening; its usefulness is much more than stated. It is also an essential element in the space suit’s life support system. 

Activated carbon in water filters is not a new concept. Back in the olden days, people sprinkled a pinch of activated carbons in water to make it appropriate for drinking. Activated carbon filters are a relatively newer technology. Activated carbons are great filters and remove a vast amount of impurities from drinking water. The Environmental Protection Agency (EPA) considers activated carbon as the only filtering material that filters 14 identifies pesticides, 12 herbicides, and 32 other identified organic contaminants.

It also removes chlorine, thereby improving the quality of water. Chlorine is used as a disinfectant in water, but it gives the water a bad smell and unpleasant taste. Prolonged exposure to chlorinated water can lead to cancer. Activated Carbon filters chlorine, its by-products and VOCs from water to make it suitable for drinking purpose.

Difference Between an Electric and Non-Electric Water Purifier

While it is basic to know by the names, the difference between an electric water purifier and a non-electric water filter is not only in the usage of electricity. The purification method here also plays a vital role.We are often struggling to decide upon which water purifier to buy.

Both types have their advantages and disadvantages. With the growing concern around electricity consumption and energy security, non-electric appliances are also gaining momentum. But, like said, both the water filter categories come with their baggage of positive and negative. 

The non-electric water filters are basic sediment filters while some come with an extra ultra-fine filter membrane (UF). The reverse osmosis and ultraviolet filtration systems are electric water filters. RO uses high water pressure to pass it through the RO membrane. The water in UV is purified by radiating ultraviolet rays to kill microbes. 

Non-electric water purifiers like activated carbon water purifier, UF and Sedimentary water purifier removes dissolved chemicals, germs and viruses, suspended particles, silt and sand. RO and UV water purifiers remove dissolved solids (TDS), and water-borne diseases caused by bacteria and virus. 

When you search for the best water purifier with price, search engines will give you a detailed comparison of the price for both. Non-electric water purifiers will cost less than the electric water purifiers. What needs to be kept in mind is also the fact that non-electric water filters cannot convert hard water to soft. 

Why Do You Think a 5 Star Water Purifier Is Better?

Issued by the Bureau of Energy Efficiency (BEE), Indian Ministry of Power enacted the Standards and Labelling (S&L) Scheme under the Energy Conservation Act, 2001. The scheme is to inform customers regarding the energy savings of equipment and appliances utilizing high-energy. The aim is to help consumers make an informed decision. Higher the star, better the efficiency! More star on appliances denotes better energy saving.

It is always in our hands to choose any appliance of our requirement, but we must also make a conscious decision. A better approach to the future is something everyone should look forward to.

How Is Alkaline Water Purifier Different From UV Water Purifier?

Before explaining the difference between alkaline water purifiers and UV water purifiers, it is necessary to understand what alkaline water is!

Alkaline water is water that is less acidic in nature and quantity than regular tap water. A pH is a number that indicates the acidic or alkali value of water on a scale of 0 to 14. A pH value of 1 denotes extremely acidic while 13 denote very alkaline. An approximate of pH 7 is considered neutral water.

Alkaline water purifiers are used to purify the acids in waters, causing serious health issues. It neutralizes the acid levels and makes it alkaline. It increases the pH of water that is the minimum required for a human body.

UV water purifier kills parasites and makes the water safe and drinkable. It does not purify water with the help of chemicals, thus making it richer in minerals.

There are many types of water filters in India, but alkaline water filters are cost-effective as compared to the prices of RO water filters.

When to Change your Sediment, Carbon and DI Cartridge?

It is advisable to change your water filters cartridge every six to eight months. The RO membrane should ideally change every two years. Replacing or changing your sediment, carbon and DI cartridges is recommended periodically for the best use of the filter. It also ensures the water dispensed by the filter is capable of clearing the water of all its microbes and contaminants. Apart from providing safe drinking water, changing your filters cartridge decreases the load on the filter machine.

You need to note that the life shell of cartridges depends on the level of impurities present in your water, and the amount of water filtered using RO technology. If the purifier filters a huge volume of water daily, the cartridge is likely is exhaust within a few months.

Frequently Asked Questions

It is vital to ensure the water you drink is free from contaminants which can have adverse effects on your health. If you are searching for the best water purifier for home, it is imperative to know your water quality. This saves you from ending up buying the wrong water purifier at a high price. It is always advisable to have your water quality tested, and this test can be performed easily at your home. 

Water testing kits are easy, convenient and simple to use. These home water testing kits contain several strips for testing contaminants in water such as the concentration of bacteria, pH levels, presence of heavy metals and other viruses. 

These strips are exposed to tap water. The strips change their colour based on the water’s mineral contents. It is advisable to buy a kit with various strips that will check for bacteria, pesticides, leads, nitrates, hardness, chlorine and pH. A single strip kit is only for measuring the pH levels. Follow the instruction given in the kit for best results. 

Fill a glass with room temperature water, and move it back and forth for 5 seconds in a submerged position. Remove the strip and shake off the excess water. Follow the chart as the colour changes. Now compare the colours to the chart colours and determine the content composition.

RO, UV and UF are water purification technologies used by different water purifiers to deliver pure and filtered water to all. 

Reverse osmosis (RO) is one of the best water purification technologies used by almost all water filters. An RO water purifier uses a semi-permeable membrane to treat hard water. The water passes through a semi-permeable membrane removing nitrates, fluorides, sodium, copper, arsenic and other dissolved salts and impurities. Water filters with RO technology are also capable of treating heavy metals and water with high TDS concentration. 

Ultraviolet or UV water filters uses ultraviolet radiation to treat and remove bacteria and viruses, causing water-borne diseases. It is also widely used to get rid of viruses, germs, disease-causing micro-organisms, pathogens and cysts. UV purifiers do no remove dissolved salts from water and make it rich in essential minerals. 

Ultrafiltration or UF water purifier uses ultra-filtration membranes to treat water. The water passes through these UF membranes where bacteria, suspended particles, and virus present in the water are trapped to make it safe for drinking. 

The size of any water purifier you choose is always based on the number of members in your family. It is ideal to buy a water filter of high storage capacity for families with more than four members. For homes with not more than four members, you can select a water purifier with less storage volume to avoid wastage of water.

Also, you must remember that the cost of a water purifier is also determined on its storage capacity. Higher the water storage capacity, the higher is the purifier’s price. Likewise, for purifiers with lower storage volume, you pay a lesser price. You can also choose an instant water purifier if you have lesser members in your family.

TDS levels in Borewell water are generally 500ppm or higher. This increases the salinity of the water, making it difficult to drink. Borewell water due to their high TDS levels requires advanced purification technologies like Reverse Osmosis (RO), Ultraviolet (UV) and Ultrafiltration (UF). 

TDS levels higher than 300ppm needs RO purification technology, while UV filtration is suitable for TDS concentration lower than 300ppm.

Water purifiers with a storage tank provide a constant supply of filtered water without having to worry for safe drinking water during a power cut off. You always have access to pure water. This also saves your electric consumption while instantly dispensing water at a higher speed.

However, you can always opt for instant water purifiers if you have lesser number of people at home. A water storage tank is always susceptible to infections if not cleaned and maintained periodically. Instant water purifiers are safe from any contamination since there is no storage space. You get purified water at all times. You must also be prepared to wait before the instant water purifier dispenses purified water.

It is completely up to you which water purifier matches your criteria. Choose the correct water purifier for you and gift yourself a healthy life.

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