Best Selling RO Water Purifiers (The Ultimate Guide)

Check out the best RO Water Purifiers in India. These products are rated according to important factors like storage, purification level and technology used.

It is best suited for areas where the level of contamination in the water is very high.

While buying a RO Water Purifier, you should consider the following factors:

a) Technology – (RO, RO+MF, RO+UV, RO+UV+UF, RO+UV+UF+TDS)

b) Storage Capacity – (Below 7L, 7-14L, Above 14L)

c) Levels of purification – (3 Stage, 4 Stage, 5 Stage, 6 Stage)

d) Purification Rate – (12L/Hr, 15L/Hr)

You can read more about these factors & technical jargons by Clicking Here.

Top 5 RO Water Purifiers in India – Expert Verdict

1. Kent Grand Plus TDS 8L (RO+UV+UF)

Kent Grand Plus

This is the No. 1 recommendation because:

  • Based on its Patented Mineral RO technology, it can recover up to 50% of the water. While others can recover only about 20-25% of the water.
  • Its Double purification process helps in removing all bacteria & viruses while retaining the essential minerals & nutrients
  • Reasonably priced in spite of being a feature rich purifier
  • Also See: Kent Water Purifier Price List

2. Aquaguard Geneus 7L (RO+UV+UF)

Aquaguard Geneus

This is our No. 2 recommendation because:

  • It has an I-Filter which removes fine suspended particles present in water before it undergoes further purification
  • Once 5500 litres of water are dispensed, the Intelligent Sensor warns about the replacement of the cartridges
  • Reserve Mode to extend the life of cartridges for extra 500 litres

3. Pureit Ultima 10L (RO+UV)

Pureit Ultima

No. 3 recommendation because:

  • Purity Indicator which senses the water quality up to 5000 times a second
  • Has a TDS Modulator which adds minerals to the purified water to enhance its taste
  • 6-stage purification levels turns hard water of up to 2000 ppm into soft and sweet water
  • RO Protection Lock which automatically stops the flow of water when the Germikill Kit’s (Internal filters) life is over

Also See: PureIt Water Purifier Price

4. Pureit Advanced 5L (RO+MF)

Pureit Advanced

This is the No. 4 recommendation because:

  • Cheapest RO Water Purifier with 6-Stage Purification Process
  • Turns hard water of up to 1800 PPM into potable water
  • Break resistance tap which has been tested up to 50,000 times so that it lasts long
  • Advanced Voltage Fluctuation Guard protects the device from irregular voltage spikes

Also See: Water Purifiers Price

5. Tata Swach Silver-Platina 7L (RO)

Tata Swach Silver

This is our No. 5 recommendation since:

  • Auto Flushing System which collects all the impurities & flushes them out from time to time
  • Zero contamination storage tank requires no maintenance

Best RO Water Purifiers: Detailed Specifications Table

 Kent Grand Plus TDS 8L (RO+UV+UF)Aquaguard Geneus 7L (RO+UV+UF)Pureit Ultima 10L (RO+UV)Pureit Advanced 5L (RO+MF)Tata Swach Silver-Platina 7L (RO)
BrandKentEureka ForbesPureitPureitTata
Model NameKent Grand PlusAquaguard GeneusPureit UltimaPureit AdvancedSilver RO Platina
TypeElectrical & StorageElectrical & StorageElectrical & StorageElectrical & StorageElectrical & Storage
Purifying TechnologyRO+UV+UFRO+UV+UFRO+UVRO+MFRO
Total Capacity8L7L10L5L7L
InstallationWall MountTable Top, Wall MountWall MountWall MountWall Mount
WxHxD26 cm x 52 cm x 41 cm40 cm x 37 cm x 46 cm37 cm x 65 cm x 42 cm23 cm x 59 cm x 43 cm42 cm x 53.7 cm
Storage Tank MaterialABS Food Grade PlasticABS PlasticEngineering-grade plasticEngineering-grade plasticABS Body Material

More Blogs:

Technical Jargons:

  • TDS – Total Dissolved Salts in water like calcium, phosphates, nitrates, sodium, potassium, chlorine & iron
  • PPM – TDS is measured in ppm which stands for Parts Per Million
  • UV – Ultraviolet
  • UF – Ultra Filtration
  • RO – Reverse Osmosis
  • MF – Micro Filtration

Deciding Factors:

Types of Water:

  • Soft Water: This is the water usually sourced from lakes, rivers, harvested rain water or municipal water supply. It has a TDS level ranging from 150-300 ppm.
  • Hard Water: Water sourced from underground water, water tankers, bore wells, tube wells, etc. falls under this category. It has a TDS level ranging from 300-2000 ppm.

Types of Filters:

Activated Carbon Filter:

  • Works without electricity
  • Purifier made up of charcoal granules which absorbs pesticides and herbicides
  • Works by removing chemical such as chlorine in water when passing through carbon granules
  • Improves the taste of water and removes bad smell

UF (Gravity Based):

  • Works without electricity
  • Does not remove dissolved impurities
  • Disinfection recommended
  • Has a storage tank to store water of up to 13L
  • Suitable for water with low TDS


  • Does not alter the water chemically
  • The sterilised microorganisms are not removed from the water
  • Does not remove dissolved organics, inorganics or particles
  • The disinfection process is fast


  • Most effective water purifier specially when the TDS is between 300-2000ppm
  • Reduces the hardness of water which is mainly caused by dissolved calcium & magnesium salts
  • Also removes the contamination caused by fluoride & heavy metals like arsenic, lead & mercury

Storage Capacity:

Water purifiers are available with both storage & without storage. The storage capacity varies from brand to brand & depends on the model.

Levels of Purification:

Water purifiers can have multiple levels of purifications varying from 3-Stage to 6-Stage. Each stage uses a different technique of purification. The more the number of stages, the better the quality of the purified water. Multiple stage purification combines all the above mentioned types of filters.

Purification Rate:

Purification Rate is the rate at which a water filter purifies raw water to the final filtered water. The rate varies across different purifiers ranging from 12L/Hr to 15L/Hr.

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