Best Water Purifier (RO) In India: Buying Guide And Review

Best Water Purifier (RO) In India: Buying Guide And Review

Water Purifier for Home

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best water filter


Are you facing the problems like muddy water, salty taste, impurities, heavy water, hard water in your house ? Then do not drink such water directly from the tap. It is the contaminated water which has a very bad impact on the health. Get it purified with a water purifier to make it safe for drinking purpose.

The water purifier or the RO (reverse osmosis) is the most common kitchen appliance as the water is the basic need. The RO purifier uses the technology of UV, UF, and MF to clean the water impurities.

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How the water purifier(RO) works ?

The reverse osmosis or RO is one of the most advance and widely used technology in the water purification system. The Reverse osmosis forces the water to pass through a semipermeable membrane which is a thin membrane which allows only the water molecules to pass through and leaves behind the large molecules od dust, impurities, chemicals like lead, mercury etc. These membranes are very thin and only allows the particles or molecules which are small in size and retain back the large molecules. Thus gives out the pure water when passed through it. It is also useful to separate the dissolved impurities.


Storage Capacity

7 Litres

8 Litres

8 Litres

7 Litres

10 Litres

Power consumption

40 Watts

60 Watts

60 Watts

36 Watts

36 Watts



7 stage purification with copper charge

RO + UF + TDS Control + UV

6- stage purification with RO + UV

Pre-filter + Sediment filter + Silver Activated Post Carbon + UV Lamp + UFSS (For Hot water








1 year

1 year

1 year

1 year

1 year

TDS(in ppm)

up to 2000 

up to 2000 

up to 2000 

up to 2000 

200 ppm and hardness 120 ppm

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Advantages of RO

  1. The RO is the best technology to purify water.
  2. It is one of the most efficient method of water softening.
  3. Easy to maintain and clean
  4. The ion particles are completely removed by this process.
  5. It is a great choice for the removal of the materials like lead, mercury etc. from the water. These metals are highly dangerous for health.
  6. The RO water purifier also removes dissolved impurities form the water which is not possible with other water cleaning process.

Disadvantages of RO

  1. The minerals like calcium, magnesium and some slats that are useful for our health are also removed with the RO process.
  2. A lot of water is wasted while filtration process is going on. So it leads to water wastage.
  3. It takes a lot of time for water to get purify through his process.
  4. It is a little bit expensive than other modes of filtration.
  5. The RO purifier works on electricity so it leads to the electricity bills

Best Water Purifier in India (2021)

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Eureka Forbes AquaSure from Aquaguard Amaze RO+UV+MTDS 7L Water Purifier

aqua sure water purifier

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The aqua sure water purifier presented by Eureka Forbes comes with Dual RO+UV+MTDS technology which ensures that the water you drink is absolutely safe.


  • Capacity: 7 L
  • Smart LED indication
  • Free installation
  • Power consumption: 40 watts
  • Technology : RO +UV +MTDS
  • Useful for TDS(200-2000)
  • Sleek and compact design


  • Long lasting and durable cartridge (6000L water) water purification
  • Energy Saving device and consumes Less power
  • Sleek and compact design fits anywhere


       Water storage is only 7 L which is not sufficient for large family.

HUL Pureit Copper+ Mineral RO + UV + MF 7 stage Table top / Wall Mountable Black & Copper 8 litres Water Purifier

HUL pure it water purifier

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The HUL is a one of the famous brand in the water purifier market. Pure it is one of the most common purifier. Pure it Copper+ RO, is an advanced RO purifier that infuses health benefits of copper in 100% RO purified water. The consumables including the pre-sediment filter, pre-RO carbon filter, mesh filter, reverse osmosis, membrane, UV reactor, post-RO carbon filter, micro filter membrane and copper module will not be covered under warranty.

The copper has many health benefits and removes most if the stomach related problems such as gastric, ulcers, acidity etc. This purifier water incorporates all the essential components of copper and enhances the water purity. Moreover, the copper infused water has anti-microbial and anti-inflammatory.


  • Capacity: 8 L
  • Food grade engineered plastic
  • TDS up to 2000 ppm
  • Free installation
  • 7 stage purification
  • Copper charged water
  • Power consumption: 60 Watts


  • Water with copper charge having anti inflammatory and anti bacterial property is good for health.
  • Good after sales service
  • Advance alert for changing of the cartridge


        Copper module is not under warranty

KENT Supreme 2020 (11111), Wall Mountable, RO + UF + TDS Control + UV in Tank, 8 L Tank, White, 20 LPH Water Purifier

kent water purifier

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The KENT Supreme Mineral ROTM Water Purifier with smart and all new technology. It uses futuristic technology and purifies water by RO+UF+TDS Control+ in-tank UV Disinfection and thus gives pure and healthy drinking water. The RO +UF +TDS control removes the dissolve impurities such as arsenic, rust, pesticides and fluorides.


  • Multiple purification RO +UF +TDS
  • Capacity: 8 L
  • Elegant wall mounted design
  • UV LED Tank
  • Purification capacity: 20L/ hr
  • Fully Automatic
  • Power consumption: 60 Watt


  • It is best suitable for brackish/tap water/ municipal water supply.
  • Retains the natural minerals in the drinking water with TDS control.
  • Servicing free of cost.
  • Enhanced life long product
  • Save water feature included


After sales service not up to mark

HUL Pureit Advanced Pro Mineral RO+UV 6 stage wall mounted counter top black 7L Water Purifier

pure it water purifier

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The HUL Pure it advance pro mineral RO +UV purifier comes with a Smart Power Saving Mode and can also run without a voltage stabilizer. The 6 stage purification ensures 100% purified water with mineral like calcium and magnesium important for the body. Free installation is provided by the brand. The filter automatically go to stand by mode when the filter is full.


  • Power consumption: 36 Watts
  • Capacity: 7 L
  • TDS up to 2000ppm
  • External sediment filter
  • 6 – stage purification
  • Installation kit
  • Power Saving mode


  • Designed to treat multiple source of water such as : Bore well, Tanker, or Tap water.
  • Adds sweetness to the water and make it soft and consumable.
  • Add on essential minerals good for health such as calcium and magnesium.


        Customer service not up to the mark.

A.O.Smith Z1 UV 10 Litre Wall Mountable , Table UV Black 10 Litre Water Purifier, suitable for less than 200 TDS

AO smith water purifier

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The AO Smith water purifier has a stylish design of Z1 model complements your beautiful kitchen. It is equipped with with Night assist feature and UV purified Hot water option at 45°C and 80°C. A.O. Smith Z1 Hot UV ensures to give you healthy drinking water and is suitable for water with low TDS. The Z1 model is suitable for places like Pune, Mumbai, Goa, Gujarat and Kerala where the water level is not too hard and the TDS is below 200 ppm.


  • Capacity: 10 L
  • Power: 36 Watt
  • UV Lamp and sediment filtration
  • Pressure Rating: 5 psi to 30 psi
  • Suitable for municipal water
  • TDS below 200 ppm
  • Hot water is also available in the filter


  • Good for states with TDS below 200 ppm
  • Stylish look for elegant kitchen
  • 5 Stage purification with UV filtration
  • ‘Night access and UV life indicator


         Not suitable for TDS above 200 ppm

Buying Guide For Water Purifier

Why and what type of purifier we require?

As per the survey by UNICEF Less than 50 per cent of the population in India has access to safely managed drinking water. That is my most of water borne diseases attack our country. To overcome such situation we should use filtered water which is considered safe for drinking.

The water that comes to our home is purified by municipal corporation but it comes by travelling a long distance in the pipes and various under ground construction which results in the contamination of the water and makes it unsafe for drinking purpose. Where as if you use boring water then also some salts are found in it which results in the additional impurities which also require purifier to clean.

Moreover, it you lives near a costal area then you have to deal with salty water which is tasteless as well as smelly so you will not be able to drink them in that form so you need a purifier to soften it and make it fit for drinking purpose.

The type of the filter used is basically depends on the TDS level of the water.

What is a TDS?

The TDS or totally dissolved salts include the fully dissolved salts such as arsenic, mercury, lead or so on which are not good for humans to consume. Now, let’s us see for what TDS which filter suits best

TDS (in ppm) Acceptance criteria Type of purifier
below 200
This is a good TDS level but check for the essential mineral present in it
UV + UF water purifier
up to 500
This TDS level is acceptable under BOS guidelines and most o the home water in India falls under this category

RO + UV water purifier +TDS
up to 1000
This TDS level has more impurities and is not acceptable
RO + UV +UF +TDS controller with mineralizer
up to 2000 This level is highly unacceptable
An excellent quality water purifier with RO+UV+UF+ TDS Controller

How you can measure TDS?

Basically, there are three methods to measure the TDS of water. These are digital TDS meter, Weighing scale and Conductivity. But the most popular one is the digital TDS. As it is easy to measure and anyone can do it with the help of device called TDS meter.

TDS meter



The TDS meter is easy to use and you might have seen this with the technician who come home to check the water hardness. Follow the following steps and you will get the reading in front of you:

  1. Remove the cover of the tester and look for the on/off button of the tester.
  2. Take some clean water in a glass.
  3. Now what you see in device is the two rod which is to be dipped in the water.
  4. switch on the device and dip the rods in the water.
  5. In minutes it will display the result.
  6. The result will show in PPM(parts per millions)

Mostly the TDS of the tap water remains up to 250 which is consider to be a good TDS but it does not means it is safe for drinking. It may be contaminated with impurities such as arsenic and Lead. To overcome this you need a good RO water purifier.

Note: A TDS of 2000 ppm is consider to be a very unsafe water and is not potable for drinking purpose.

Difference between water in village and cities

The villagers have a access to natural water bodies from where they collect water for household use but this water is also not safe for drinking as we can see that most of the activities such as washing clothes, bathing, animal bath, as well as defecation in village are done on the river basin which makes the water contaminated. But the people do not have access to the safe drinking water as they do not have good water filter to clean the water and most of the people in villages are affect by water borne diseases such as cholera, typhoid, diarrhea etc. to over come such problems one should look for a good and sustainable water plant that will deliver a clean and safe drinking water.

In cities the water is mainly supplied by municipality and boring water is available. The water supplied by municipal corporation is filtered at the water plant and then distributed but this need to be transferred through he pipelines which comes through various underground path causing the addition of the impurities while on the way to home. To eliminates such components we need filter in the cities. Where as the boring water is also contaminated with heavy metals such as fluorides, Arsenic and lead. this water also need to be filtered before use so we need water purifier for it.

The type of water purifier is based on the TDS level and the impurities present in it tis we have discussed in the above section.

Types of purifier

1. RO water purifier

The Ro water purifier is the most common purifier and use the reverse osmosis process to purify water. In this process the water pass through a semi permeable membrane which results in the removal of the particles that are not permitted to pass through such a thin membrane.

4 stage ro

The RO purifier is best for the Dissolve salts like arsenic, lead, mercury, heavy metals and fluoride. If you have such type of water in your house then this the best purifier you can have.

There are two types of RO purifier : under the counter and the wall mounted. The under counter are usually installed under the sink cabinet where as the wall mounted are hanged on the wall. The RO water is considered to be safe for drinking purpose. But the main disadvantage is that it runs on electricity and for every 1 Litre purification 650 ml of water is wasted

2. UV purifier

The UV purifier uses the UV Light to kills the germs present in the water and clean it. Generally water pass through the a UV lamp which cleans the water. In this water the germs bodies and there but they are harmless.

uv purifier

The main drawback of the water purifier is it is not suitable for hard water as it does not convert it into soft water and the impurities such as the arsenic, lead and mercury are left behind in the water. Moreover the turbid or muddy water is also not filtered through this process. Also it foes not change the odour of the water. But it has one main advantage as the essential minerals in the water remain intact which are good for health.

3. UF Filtration

The ultra filtration or the UF filtration is the process in which a hollow membrane is built to trap the bacteria and viruses and purify the water. It is similar to the Ro process but the Ro can treat the hardness of the water whereas the UF does not qualify this purpose.

uf filter

The UF filter is only beneficial for a place having very low TDS or chemicals in the water as they are unable to remove the hardness as well as the heavy metals such as arsenic lead etc.

4. Carbon filter

The activated carbon filter is the carbon made from the charcoal. The carbon filter attracts the germs and viruses and they got stick to its surface. The activated carbon filter is usually placed before the RO membrane as it prevents the damage of the RO membranes.

activated carbon

The activated carbon kills all the germs causing the water borne diseases and also adds taste and removes odour from the water. It works on the principle of “adsorption” which means it attracts all the impurities and stick them on it’s own surface. The main drawback of the activated carbon is that if left unused for a couple for days it can be hub for the bacteria and germs.

Sediment filter

We usually see the white filter before the water purifier which is called as sediment. The sediment cleans the sedentary particle from the water and prevent them from entering the water purifier thus reduces the damage of the purifier.


How to take care of water purifier

As the Ro water purifier cleans the water while catching the germs it must be taken care of as a little damage or dirty one can contaminate the water and transfer germs to the drinking water and make it unsuitable for drinking purpose. The RO is works with the 3 to 5 stage all being important part so must be taken care of.

  1. Pre filter or the sediment: The pre filter must be cleaned in 6 to 9 months as it is the most important part of the purification process. It prevents the damage of the RO membrane.
  2. Carbon filter: The carbon filter must also be changed after 6 to 9 months as it absorbs the chlorine and gives taste and removes bad odour. If not done then the chlorine will reach the RO membrane and can damage it. As well as the bad our and weird taste will also be added to the filtered water.
  3. RO membrane: The RO membrane must be changed after 2 to3 years depending the usage and the condition of the water in the locality. Call the customer care fort his purpose or you can but the kit and do it yourself.

A proper sanitization should also be done in two to three months . For this you can buy a sanitization kit and read the user manual for the purpose. You can also follow these steps to do the procedure. First remove the main power supply. turn off the water supply remove all the components and wash them. Now place back all the components as you removed and turn on the supply as well as power supply.

If you want your filter to be a long lasting then clean it form outside as well with a soapy water and frequently clean the tap as it might get dirty due to continuous use.



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