Best Water Purifiers in India :2019 Reviews and Buyer’s Guide

Water contamination in India is real and majority of people are getting affected by poor water quality and water-borne diseases.

The exact figure is around 8.19% according to a recent survey done and data published in 2017-2019 by MDWS Ministry of Drinking Water and Sanitation.

This figure is equivalent to 77 million affected in 20 Indian states which includes children as well. Apart from other contaminating agents, excess arsenic and fluoride are the main culprits here.

This is indeed alarming! And the fact that it is deteriorating with time, it certainly necessitates every household in India to have an alternative water purifying system which will significantly reduce the risk of water-borne diseases.

Now, the actual dilemma! Which water purifier to buy?

Keep in mind, technology is advancing faster than we can think; thousands of brands are introducing water purifiers every year. The best kind of water purifiers with RO+UV+UF are capable of removing almost all pollutants from virus, bacteria, cysts to heavy metal like arsenic, fluoride, and lead.

But with so many brands available out there it is quite challenging to choose the best one among them. Especially when you are confused and disturbed with bombardments of ads everywhere from TV, newspaper to social media!

Well, don’t get worried anymore. You have landed on the right page!

After investing so much time on research and reading thousands of comments online we have listed some of our favourite Water Purifiers in India from renowned brands which have excellent reviews and top ranking that you can consider buying.

We are also providing you with FAQ (frequently asked questions) and full “buying guide” that is going to make the purchase easier for you. So keep on reading!

List of Best Water Purifiers in India: 2019 Reviews

1. Kent Grand Plus 8 Litre Ro+Uv+Uf with TDS Controller Water Purifier 

Kent Grand Plus 8-Litre Mineral RO + UV-UF with TDS Controller Water Purifier

Product Overview

  • 7-Stage Purification with RO+UV+UF and TDS controller
  • TDS Control up to 2000 PPM, preserves all vital minerals
  • Storing Capacity 8 Litres
  • Purifying capacity 15Litres/hour
  • Save Water Technology recovers 50% as purified water
  • Filter Change alarm + UV fail alarm
  • Built-in SMPS can handle 100-300v fluctuations
  • 1 year full warranty and 3 years of free after service
  • Suitable for brackish water, tank water, municipality supplied water

What makes it special?

If you are in search of the best quality water purifier in India right now, then Kent Grand Plus is the answer. We tell you why.

The Kent water Purifier provides 7-stage purification in combination with RO+UV and also UF. It has a high level TDS control up to 2000 ppm , 8L tank with 15L/hr filtration capacity, smart alerts and one of a kind Save Water Technology. With all these excellent qualities we are bound to make it our 1st choice.

Unlike most RO water purifiers which reject 80% and purify only 20%, Kent Grand Plus water purifiers come with latest Save Water Technology that is made to recover more than 50% as purified water. Not only this, it also saves the RO waste water in a separate tank so that you can reuse it in future

Turbid water as high as 2000 ppm can be purified with Kent Grand plus and the TDS controller preserves all the vital minerals that were once lost during the filtration process thus giving you the tastiest and healthiest 100% pure water to drink every time.

The design is very simple and classy. The body is made with the ABS food grade plastic material for better durability and the see-through outer cover allows you to have a look at the purifying process that offers you purest water to drink.

The purifier comes with a high-powered UV lamp to disable all micro-organisms from water. What we really like is the filter change alert and UV fail alarm that will notify you if the filters need any replacement or if any fault occurs in the UV lamp. The purifier will automatically stop all its operations after 60 hours of the alert in case you fail to replace the filters.

Built-in SMPS-switching mode power supply prevents any kind of voltage fluctuations which is a very common problem in India and keeps the purifier safe.

All the parts and components used in Kent water purifier are push-fit that helps to prevent water leakages.

Our opinion on Kent Grand plus

Kent Grand Plus is certified by NSI, CE, ISI and WQA and it is the most awarded water purifier in India, making it a bit pricey but we must say what Kent is offering at this price range is unbeatable!

What we like

  • Built-in SMPS.
  • 8-liters of storage capacity.
  • Filter change & UV fail alarm.
  • TDS controller
  • Purified water level indicator
  • More than 50% water recovery
  • Water storage in a separate tank 

What we don’t like

  • Expensive water purifier

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2. Havells Max  8 Liters RO + UV Water Purifier

Havells Max 8-litres RO UV Water Purifier

Product Overview

  • 7-stage Purification using RO+UV
  • Storing Capacity 8 Litres and Purifying capacity 15 Litres/hour
  • Mineral Cartridge maintains correct pH level and keeps all vital minerals intact
  • Ultra modern design with flexible mounting
  • Soft touch faucet with smooth flow, zero splash
  • Revitalizer increases hydration and mineral absorption
  • Smart alerts for self-diagnostic, purification process, tank full, low water pressure
  • Error alerts for UV/SV and pump failure
  • Removable water tank with contamination proof outer cover
  • Can stand voltage fluctuations between 170-300V
  • 100% Water Passes Through Reverse Osmosis membrane and UV treatment

What makes it Special?

Havells is a renowned brand in the world of home and kitchen appliances in India and a large number of customers trust this brand. So when they launch a product you expect some extraordinary qualities from them, and this Havells Max pro is no exception.

Though it lacks some of the qualities if compared with Kent grand Plus i.e TDS controller, Save Water technology, UF membrane but has some other exciting and very useful features that has made it our number 2.

It purifies water with 7 stage water purification process gives you purest form of drinking water.

The Mineral Cartridge which has drawn all the attention of most customers, corrects the pH level and adds back all the natural minerals offering you a tastier, healthier and a satisfying glass of water each time.

And the Revitalizer Cartridge restructures water molecule making it biologically active that helps to improve hydration and mineral absorption power of the purified water.

It’s simple and compact design let you place it easily on a table/counter top or mount it in the kitchen corner. We are in love with the white and sea green colour combination that looks fantastic no matter where you place it.

Also, the transparent water tank cover is contamination proof and prevents entering of foreign particles like dust or insects keeping water clear and safe.

It is equipped with an innovative Soft-touch Faucet that ensures zero splash and smooth water flow maintaining hygiene and clarity. Like any other modern purifier, it also has smart safety alerts and error alerts like tank full alert, low water pressure alert, UV/SV and pump failure alert.

Our Opinion on Havells Max RO+UV

With 8 lit water tank and inventive features such as zero splash faucet, smart design for corner mounting and revitelizer cartridge Havells Max water purifier is undoubtedly one of the best RO water purifiers in terms of efficiency, quality and budget and ideal for 6-8 member families where the incoming water is not very bad.

What we like

  • 100% Water Passes Through Reverse Osmosis membrane and UV treatment
  • Mineral cartridge corrects pH level and adds vital minerals
  • Revitalizer cartridge improves hydration and mineral absorption power
  • Compact design for flexible mounting
  • UV/SV and pimp failure alerts
  • Soft touch Faucet for zero splash and smooth water flow
  • Removable water Tank

What we don’t like

  • It wastes some amount of water

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3. Kent Ace Mineral RO+UV+UF Water Purifier

Kent Ace Mineral 7-Litre 60-Watt RO+UV+UF Water Purifier

Product overview

  • Six-Stage Purification with RO+UV+UF
  • Water storage capacity 7 Liters
  • Capacity of purification is 15 Liters/hour
  • TDS controller keeps all the vital mineral intact
  • Filter Change indicator + UV fail alarm
  • Built-in SMPS for handling voltage fluctuations between 100-300v
  • Suitable for all kind of water sources
  • 1 year warranty + 3 years’ service without any charge

What makes it special?

If you are in search of a good RO+UV+UF water purifier from a reliable brand you can go blind with Kent Ace.

It uses 6 stages of purification which is very similar to Kent Grand Plus, only the storage capacity is less and the design is different and that is why we have placed it 3rd on our list.

It uses Double purification power of Reverse Osmosis in combination with UV+UF removes all dissolved chemicals and kills harmful virus, bacteria or cyst and extracts them out of the water.

The Patent Mineral RO technology with in-built TDS controller adds back all the natural minerals without compromising quality and taste.

Coming to its design the Kent Ace looks really smart and doesn’t hog too much space in your Kitchen. You can place it in your kitchen counter top or mount it anywhere you like.

Other much notable features are 11W UV lamps, leakage proof push-fit design, automatic and computer controlled actions.

It also provides you with one filter change indicator and a UV fail alarm to keep you updated on when to replace or change them making sure that the water is always safe for drinking.

Our Opinion on Kent Ace Mineral

It’s a great RO+UV+UF purifier from Kent and the price is also reasonable. 7L storage capacity is best for small-medium sized families. You can use it for water sources like brackish water, tap water or chemically treated municipal corporation water.

What we like

  • RO+UV/UF double purification
  • TDS controller for mineral abortion and better taste
  • Compact design
  • Purification process is really fast
  • 1 year of warranty and 3 years of free service
  • Filter change alarm and UF fail alert

What we don’t like

  • It will waste water
  • It requires maintenance

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4. Blue Star Aristo RO + UV 7 Liter Water Purifier

Blue Star Aristo RO+UV AR4WHAM01 7-Litre Water Purifier

Product Overview

  • RO+UV Water Purifier
  • 6 Stages of Purification with 96% TDS control
  • Storage capacity 7 Liters
  • Can purify 12Liters of water per hour
  • Aqua Taste Booster for better taste and better mineral absorption
  • Child Safety Lock button
  • Full tank & low pressure Indicator
  • UV- fail alarm
  • 1 year Warranty on the product

What makes it special?

Blue Star is very new in the world of water purifiers but it is making good quality and reliable water purifiers and its recent launch the Blue Star Aristo is one of our favorites. And we placed it 4th on the list for some definite reasons we are going to tell you about.

It is one of the budget friendly RO+UV water purifiers available both in Black and White; we loved the black one though. The design is also very simple and stylish.

Coming to its performance, like any other good RO water purifier it purifies water in 6 stages. The large 10inch filters and the high-quality RO membrane is very efficient in removing TDS up to 96% which is quite impressive. So you can refine water from any source without any worry.

It is also equipped with an Aqua Taste Booster which can enhance the taste while maintaining an optimum pH level so you experience better taste every time you drink a glass of water.

It also comes with a child safety lock. It’s basically a button to stop water dispense and prevent unnecessary water wastage.

Our opinion on Blue Star Aristo

Blue Star Aristo meets all the standard requirements as a good RO purifier with some unique and useful features such as Taste Booster and Child Safety lock. And we believe it will be a good addition to your home and kitchen.

What we like

  • Best RO+UV water purifier under 10000
  • Stylish Looks
  • Child Safety lock
  • UF fail alert and full tank indicator
  • Aqua Taste booster
  • Removable tank

What we don’t like

  • No UF membrane
  • Cannot function without electricity

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5. Livpure Glo 7 Litres RO + UV +Mineralizer Water Purifier

Livpure Glo 7-Litre RO + UV + Mineralizer Water Purifier

Product overview

  • 6- Stage purification with RO+UV+Mineralizer
  • Stank Storage 7 Liters
  • Can filter 12 Liters/hour
  • Tank full Indicator
  • TDS Control up to 1500 ppm
  • Neat and Clean Design
  • 1 year warranty

What makes it special?

If you have a strict budget and don’t want to shell out more than 10000 rupees on a water filter, you can opt for Livpure Glo. With 4+ ratings and more than 1500 comments on Amazon it comes at no. 5.

The purifier goes through impressive 6 levels of cleansing. While the RO membrane effectively removes all hazardous chemicals such as heavy metals, salts, pesticides, herbicides, the UV bulbs kills all the micro-organisms like virus, bacteria, and cyst.

The Silver Impregnated Post carbon filter is made to sucks all the volatile organic impurities out of the water. Also the mineralizer at the last stage of filtration keeps natural minerals intact and corrects the ph level leaving aqua that feels fresh and tastes so much better.

The tank cover has a full tank indicator and makes sure you always get to drink clean and healthy water even when the power is gone as it stores purified water in a separate tank.

Our opinion on Livpure Glo

Regardless to say it’s a very basic looking product. But we are very much impressed with its filtration process. The 6 stage advanced purification literally removes all possible contaminants, bad taste and odor. It’s a great value for money filter who are on a budget!

What we like 

  • Item weighs only 7 kg
  • Full tank indicator
  • 1-year of warranty
  • 6-stage filtration mechanism
  • Elegant and sleek design
  • 7-liter water capacity

What we don’t like

  • Requires professional installation
  • After sales service needs to be improved

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6. Eurekha Forbes 6 Litres RO + UV + MTDS Water Purifier

Eureka Forbes Aquasure from Aquaguard Smart Plus

Product Overview

  • RO+UV+MTDS Water Purifier
  • 6 Stage Purification with 90% TDS removal
  • Storage Capacity 6 L
  • Power Saving Mode
  • Lightweight and Compact design for wall mounting or can be placed on countertop
  • LED Indicators for Low Pressure, Full tank and No Water Supply
  • Voltage Fluctuation protection between 150-270v
  • Suitable for any water source
  • 1 year warranty
  • 10 days free trial

What makes it special?

Talking about water purifiers one cannot miss Eureka Forbes since they are in this field for over 35 years and keep on coming on the top water purifier list. With all the modern purifying technologies the recent model from Eureka Forbes comes 6th on the list.

It has a smart sleek design and the stunning black chassis can uplift your kitchens boring appearance.

Water passes through 6 stages of intensive operation giving you drinking water as pure as possible.

The very new MTDS controller is a great advantage for Indian households where the taste of water varies so much because we receive water from different water sources.

Unlike other water purifier which keeps sucking power even after the tank is full Eureka Forbes automatically turns the power off when the water tank is full by enabling power saving mode.

In simple terms it saves energy and keeps your electricity bill within your limits.

Our opinion on Eureka Forbes RO+UV+MTDS Water Purifier

It doesn’t come with a filter change alarm so you need to be careful about when to replace old filters with new ones.  It is a very good option for those who want best quality water purification from a reliable brand with good after sales service.

What we like

  • Energy saving mode
  • Full tank indicator
  • Blue LED display
  • MTDS technology for enhancing the taste of water
  • Free installation + 1 year warranty

What we don’t like

  • No filter change alarm
  • Very basic design
  • It lacks features

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7. HUL PureitClassic 5 Litres RO + UV  Water Purifier 

HUL Pureit 5 Ltrs Classic RO + UV 6 stage water Purifier

Product overview

  • 6 Stage Water Purification with RO+UV
  • Storing Capacity 5 Liter
  • Can remove TDS up to 1800 ppm
  • Small and Compact design
  • Break resistant tap
  • In built voltage guard
  • Free Installation
  • 1 year warranty 

What makes it special?

Next model from HUL Pureit Classic comes on no. 7 in our list.

HUL Pureit Classic has a slim and compact design which demands minimal space in your kitchen. The color combination of blue and white looks really sober and will complement your choice of decency.

This highly efficient water purifier filters water through 6 stages of filtration. It can refine water from any water source.

High TDS control removes all inorganic salts, heavy metals, pesticides and herbicides. The final water that comes out is 90% softer and tastes sweet.

It uses larger filter blocks to maximize the time of contact thereby ensuring water purity and increased lifetime of membrane and filters.

Our opinion on HUL Pureit Classic

Hull pure it offers you one of the best quality RO+UV water purifiers with 5 Liter water storage and 6 stages of purification. It is sufficient for a family with 3-5 members but not more than that.  If you have a strict budget and want an efficient water purifier for your small family or kitchen, there can be no better option than this. 

What we like

  • Advanced water purification with RO+UV+UF+TDS controller
  • TDS control up to 1800 ppm
  • Affordable price
  • Built-in voltage guard
  • Easy installation
  • 1 year of warranty

What we don’t like

  • Low storage capacity
  • No alert system for filter change and UV-fail
  • No display

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8. Ruby RO + UV+ TDS Control Water Purifier 

Ruby RO+UV+TDS Controller Water Purifier

Product Overview

  • 6-Stage Water Purification
  • Storage Capacity 12 Liters
  • Indicator for Filter Change
  • RO+UV+TDS controller for high turbid water
  • 1 year warranty on electrical parts except the UV lamps
  • Under 5000 rupees 

What makes it special?

If you think all the RO water purifiers come with a high budget the Ruby RO+UV+TDS controller will prove you wrong. It guarantees quality and efficiency at a very affordable price.

Ruby RO+UV has 6 stages of water purification that are

  • Micro Sediment Filter- removes tiny particles of sand, dust and rust effectively
  • Activated Carbon Filter- absorbs chlorine and other dissolved organic compounds. It also absorbs any bad odor and color
  • RO membrane- it uses high quality RO membrane that can process 75 gallons of water per day. The extra thin RO membrane is efficient to filters out even the smallest chemical compounds, heavy metals, pesticides and herbicides.
  • UV lamp- it disinfects the water, kills all harmful virus, bacteria, and cyst making water idle for consumption
  • Mineral Cartridge-adds back all the essential minerals leaving clean and fresh water to drink

The design is simple for easy and fast installation. Cabinet is made of Food Grade Abs Plastic to last for a lifetime. 

Our opinion on Ruby

The ruby water purifier has everything (RO+UV+UF+TDS Control) that cleans the water to a great extent.  Only disadvantage is that the filter and UV lamps don’t have warranty. You may need to change the filters frequently if your water has high TDS level.

Otherwise it’s a great low budget water purifier and no other brand can promise you better quality and efficiency than Ruby under this price range. 

What we like

  • Budget-friendly device.
  • 12-liters of water capacity.
  • Available in white and blue color.
  • 6 stage filtration
  • Filter change indicator

What we don’t like

  • No warranty on filters or UV lamp
  • Poor after sales service

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9. Kent Maxx 7 Liter UV + UF Water Purifier

KENT Maxx 7-Litres UV + UF Water Purifier


Product Overview

  • Double purification of UV+UF
  • Storage capacity 7 Liters
  • Smart alert for filter change and UV-fail
  • Built-in SMPS for voltage fluctuations between 100-300v
  • High-quality UF membrane to filter out any suspended pollutant molecule

What makes it special?

Yet another great pick from Kent that many people swear by is the Kent Maxx UV+UF water purifiers. It’s undoubtedly one of the best RO water purifiers of Kent.

It’s rated 5 stars by more than 300 customers on Amazon, lacks some of the features compared to Kent Grand Plus and Kent Ace, so we could place it on no 9.

Kent Maxx provides double purification of UV+UF.  While Ultra Violate ray kills all micro-organisms including virus, bacteria, algae, protozoa, cyst the hollow fiber Ultra Filtration membrane that filters out any suspended pollutants resulting in 100% pure and tasty water.

The transparent body is made up of high-quality ABS Food Grade Plastic for longevity. The fully automated system doesn’t require any manual interference. All parts and fittings are leak proof and cleaning is painless as the water tank is detachable.

The filter change alarm and UV-fail alert notifies you before they get damaged so you can change them and makes sure you always get safe water to drink.

Our opinion on KENT Maxx

If your water has low TDS level then you may not need a RO water purifier. UV+UF water purifiers are enough powerful to refine municipal supplied water, tank or tap water. And the Kent Maxx is one of the best selling UV+UF water purifiers so you can opt for it without any doubt or hesitation.

What we like

  • 7 Litre of water storage capacity
  • Low maintenance cost
  • Water level indicator and UV fail alarm
  • Built-in SMPS
  • Zero water wastage

What we don’t like

  • Not suitable for high TDS wate.

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10. Aquatec Plus 12 Liter  RO + UV + UF+TDS Water Purifier

Aquatec plus Advance Plus 12L RO+UV+UF+TDS Water Purifier

Product Overview

  • Double purification of UV+UF
  • Storage capacity 7 Liters
  • Smart alert for filter change and UV-fail
  • Built-in SMPS for voltage fluctuations between 100-300v
  • High-quality UF membrane to filter out any suspended pollutant molecule
  • Free Installation

What makes it special?

We are sure you haven’t heard of this brand yet, it has recently made its entry in the market of water purifiers and has started giving tough competition to its competitors.

It comes with some mind blowing features like TDS level up to 2000ppm which is absolutely crazy. So last but not the least, its worthy of making a stand in the list of top 10 water purifiers.

The water goes through 8 levels of treatment including all premium filtration treatments as Reverse Osmosis, Ultra Filtration, Ultra Violet Lamp and TDS control that eliminates 99% of the contaminants thereby providing you clear and safe water that is idle for consumption.

The unit is pretty low maintenance. The cartridge requires replacement once in a year even if you use it daily to filter water as raw as bore-well and that’s a big relief.

This Bangalore based brand is proving free installation across India and also promises to fix any malfunction within 48 hours of report.

Our opinion on Aquatec plus Advance Plus

One problem with Aquatec Plus Advance is that it doesn’t have any taste controller that can ensure good taste of the purified water otherwise the water tastes normal and completely odourless.

If you have high TDS water supply and searching a descent RO+UV+UF purifier then search no more and make a smart buy with Aquatec Plus. You will be glad to know that this particular water purifier has no negative remarks from their customers and rated 4.5 stars in Amazon.

What we like

  • TDS level up to 2000 ppm
  • 12 Litre water tank
  • Easy installation
  • After service
  • Compact design

What we don’t like

  • No control over water taste

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Water Purifier Buying Guide

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

1. Source of Water

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

2. Quality of water

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

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

TDS-Total Dissolved Salts of water

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

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

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

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

3. Types of Water Purifying Technologies

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

a. Reverse Osmosis (RO)

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

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

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

b. Ultraviolet (UV)

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

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

budget water filters

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

c. Ultrafiltration (UF)

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

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

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

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

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

d) Activated Carbon

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

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

How it works?

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

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

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

e) Gravity Based or Candle Filter

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

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

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

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

4. Capacity

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

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

5. Maintenance

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

6. Warranty and Installation

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

7. Is the Brand Reliable?

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

8. Electric or Non-Electric Water Purifiers

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

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

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

9. Budget

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

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

Water Purifier Features

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

1. Flow Rate

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

2. Weight

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

3. Body

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

4. Global Certification

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

5. Display

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

6. Storage tank

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

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

Different Types of Impurities Present in Water

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

  • Dirt

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

  • Germs

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

  • Chemicals

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

Precautions and Tips

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

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

Some Frequently Asked Questions

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

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

2. Is it safe to drink filtered water?

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

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

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

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

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

4. Can ultra-filtration remove bacteria?

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

5. How long a water purifier can work?

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

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

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

Else you may face difficulty in purchasing the right one.

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

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


We tried to provide maximum information about water purifier to help you make an informed decision. As per our choice, we would consider purchasing Kent Grand Plus Water Purifier. You can make your own choice based on the requirements.

Choose Wise and Stay Healthy. Further if you have any queries, share it with us in the comment section below. We are happy to clarify all your answer.