5 Best Under Sink Water Purifier in India to Save Kitchen Space

Under-sink water purifiers work hidden without spoiling your kitchen’s aesthetics. They are costlier as compared to regular water purifiers but if you are upgrading your kitchen, it’s worth investing a few bucks more that saves you kitchen space as well as without any need to drill holes on the kitchen wall.

We have shortlisted the top 5 best under sink water purifiers in India to let you make an informed choice for your kitchen.

Table of Contents

5 Best Under Sink Water Purifier in India 2022

#1. A.O.Smith X5+ Water Purifier

A.O.Smith X5+ Water Purifier

The A.O.Smith X5 water purifier is one of the best water purifiers which saves on the kitchen space and fits very well under the sink even in small spaces. 

The purifier comes with patented SSM technology ( side stream RO membrane) which ensures less water wastage and is suitable for water up to 20,000 ppm TDS.

The RO Membrane element in A.O Smith is approved by WQA against ANSI standards. The purifier is made of virgin ABS food-grade material which is also waterproof.

The A.O.Smith water purifier operates through 6 Stage Purification along with Min Tech technology. Let’s understand the 6 stage purification and Min Tech processes.

6 Stage Purification – The water is made to pass through 6 different filters that ensure clean and mineral-rich water for drinking. Each filter has its significance.

  1. Pre-filter – The primary filter which separates the big sediments from the water before entering into a RO system. Thus it reduces the load of the internal filters and increases the life of the RO system. 
  1. Sediment filter – Filters microscopic particles 15 times smaller than a grain of sand.
  1. Pre-carbon filter – remove elements that cause unpleasant taste and smell to the water.
  1. RO membrane – Reverse osmosis membrane is a thin membrane that does not allow dissolved substances such as radium, lead, and arsenic through it.
  1. Post filter – Removes any possible residual taste from the tank.
  1. Min-Technology – adds essential minerals to the water and maintains the accurate pH value of water.


  • Capacity – 7.5 Litres
  • Brand – A.O.Smith
  • Power source – Corded electric
  • Material – ABS Plastic
  • Includes a water container
6 Stage purification with Min techExpensive
Can be used up to 20,000ppm TDSNot suitable for bigger families.
Patent SSM RO Technology
International design which saves kitchen space.
Also includes a gooseneck faucet

#2. AQUA D PURE UV Water Purifier

AQUA D PURE UV Water Purifier

 AQUA D PURE UV Water Purifier is a 5 stage under-sink water purifier with no RO mechanism with zero water wastage.

As it does not have an RO system, you can use it if the water TDS levels are between 100-200 ppm.

The UV Rays( ultraviolet ) are used to disinfect the water due to its strong germicidal (inactivating) ability that kills 99% of harmful bacteria and viruses that change the taste of the water.

The 5 Stage Purification process can be summarised as below.

  • Pre-Filter – It is a 5-micron filter that removes dirt, sand and solid particles.
  • Sediment-Filter – it is a 1-micron filter that effectively filters more fine rust and sand particles.
  • Activated Carbon Filter- removes chlorine and other organic chemicals and enhances the taste and odor of water.
  • Philips Ultra Violet rays filter – destroys the harmful microorganisms and disturbs their ability to survive and reproduce.
  • Post-Carbon filter-  removes any other leftover impurities and decayed microorganisms.

The AQUA D PURE UV Water Purifier is made up of superior quality plastic and is wall mountable.


  • Capacity – 35 Litres
  • Material – Plastic
  • Power source – Corded electric
  • Installation – wall mountable and under sink
  • Warranty – 1 year on all electronic parts
5 stage water purificationNot suitable for water above 200 TDS value
No water wastageDoes not include a container.
All the essential minerals are not lost.
Can be connected directly to your sink tap.
Very economical

Also read Best kitchen hobs in India

#3. KENT Excell+ RO Water Purifier

KENT Excell+ RO Water Purifier

KENT Excell+, an under-the-counter advanced RO water purifier utilizes multiple purification technologies to remove impurities from water.

The multiple purification process involves filtration through RO+ UV+ UF + TDS Control which not only removes solid impurities but also dissolved impurities like salts, chemicals, various bacterias, and viruses.

The KENT Excell+ can purify brackish, tap water, and municipal water supply. Can be used for TDS ( 500- 2500 ).

The KENT’s Mineral RO technology purifies the water along with retaining the essential nutrients. 


  • Capacity – 7 Litres
  • Material – Plastic
  • Power source – Corded electric
  • Installation – wall mountable and under sink
  • Warranty – 1 year + 3 years no service charge.
Purification capacity 15 Ltr per hour.Not suitable for big families
Spin-welded RO membrane to prevent tampering
Push-fit components for leakproof.
7 Litre hydrostatic tank.
Contains UF fail and filter change alarm.

#4. Aquaguard UTC RO Water Purifier

Aquaguard UTC RO Water Purifier

Aquaguard UTA is one of the advanced under sink purifiers available in the market with an RO + UV + MTDS purification system which gives you healthy and drinkable water.

The purifier is so designed that it can easily fit under the sink.

You can easily purify any water even from a borewell with a TDS up to 2000 ppm.

Biotron technology works wonders in the purification process. Equipped with Advanced RO+UV+TeasteGuard regulator purification, the purifier enables you to adjust taste depending on the source of water.

The Advanced technology purification system keeps all the minerals and nutrients intact while removing the impurities. 


  • Capacity – 8 Litres
  • Material – Plastic
  • Platform Drilling Diameter – 15 mm hole
  • Installation – Under sink
  • Warranty – 1 year
RO + UV + MTDS purification systemExpensive.
Can be used for TDS up to 2000ppmCapacity is less, not for big families.
All the essential minerals are intact.
Taste guard technology to adjust the taste according to the source.
Very economical

Also readBest Bosch Chimney Review

#5. Kent Sterling Plus RO Under The Sink Water Purifier

Kent Sterling Plus RO Under The Sink Water Purifier

Kent Sterling Plus is equipped with patented Mineral RO Technology that helps in retaining essential natural minerals in the purified water. And the patented TDS control system helps in providing tasty drinking water.

With the help of double purification of RO + UV/UF with TDS control valve, all the dissolved impurities such as arsenic, rust, chemicals, bacteria, viruses, and salts are removed making the water pure and drinkable.

The Sterling Plus has a fully automatic operation which starts the purification process as soon as the water level of the tank goes below the maximum level.


  • Capacity – 6 Litres
  • Material – Plastic
  • Brand – Kent
  • Installation – Under-sink and wall mountable
  • Warranty – 1 year
RO + UV + UF + TDS purification systemExpensive.
In-built TDS controller.
Essential minerals are intact.
Suitable for the purification of water from all sources.
Purification capacity is 20 Ltr per hour

Also readBest exhaust fan for kitchen

Closing Thoughts 

If you are not that good at keeping track of the time when the filter needs to be changed then you may go for KENT Excell+ Water Purifier

And if you want a purifier with the best purification technology, then you may opt for Aquaguard UTC RO+UV+MTDS Water Purifier from Eureka Forbes.

About Shilpa Gupta

Shilpa Gupta is the editor-in-chief of KitcheAdvisor with a vision to help the reader with providing genuine advice on kitchen hacks & recommending the right product. She loves hills more than beaches.

Leave a Comment