Best Water Purifiers India 2020 – Reviews & Buyer’s Guide

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Best Water Purifiers India 2020 certified by NSF, WQA, ISI, and CE. Buy branded/best selling water purifier product in UV, UF, RO water purifiers at discount prices from Amazon…

There has been a lot of new launches in the past few months in the Water Purifier industry and it’s going to be something difficult yo choose the water purifiers due to the presence of a lot of options.

At Watery, I’m dedicated to writing the best of my knowledge on purifiers in India with immense experience of using multiple Water Purifiers in my home and office.

Here are the Seven Best Water Purifiers in India 2020

1. KENT Grand 8-Litres Wall-Mountable RO + UV/UF + TDS Controller (White) 15 ltr/hr Water Purifier

  • Best Water Purifiers India

KENT RO Water Purifier is the most loved water purifiers brand in India, thanks to the variety of features and modest pricing powered by a good network of post-sales support, KENT Grand is our most recommended Water Purifiers right now in India. Here the technology RO UV UF TDS used for water purification.

  • The Best Kent Grand RO purifiers are designed with advanced technology design with a double which reduces the impurities
  • UF help to reduce bacterial materials and UV reduces the bacteria and viruses.
  • The Kent water purifiers are designed with KENT’s patented Mineral RO technology that retains the essential mineral in the TDS controller provides good water for drinking. So all the required technology RO UV UF TDS used in this product for purification.
  • This Product comes with a 1-year warranty and 3 years of free service.
  • This comes with save water technology, which saves wastewater in a separate container that can be reused for household purposes.
  • The Kent Grand comes with a high storage capacity of 8 litres, the capacity of 20 litres.
  • The water purifier is completely computer-controlled, which has an alarm indication for a filter change, UV failure.

Pros

Elegant, leak-proof design
RO UV UF TDS Technology
Alarm Indication for failure

Cons

Maintenance Cost

2. LG WW180EP RO+STS+UV+UF (Mineral Booster) RO Multi-Stage Filtration with 8 LTR

LG RO filtration system destroys completely bacteria, viruses, and heavy metals to provide purified water and which is safe and healthy drinking water.

LG providing free maintenance from the date of purchase for more details contact this number 1800-315-9999/1800-180-9999. Here the technology used is RO UF STS UV.

  • The LG puricare comes with 5 stage RO purification, it can be eliminate bacteria and viruses and heavy metals.
  • The mineral booster has to add minerals to make it healthier.
  • The tank is made of dual protection stainless steel to maintain fresh and removes the growth of antibacterial organisms.
  • 2 in 1 Care to provide a separate outlet for vegetable and fruit cleaning.
  • The smart indication to indicate the filter change, UV sterilization indicator, with water level indication
  • The digital sterilization to sterilize path using a unique sterilization kit.
  • The LG puricare comes with a 1-year warranty.

Pros

5 stage filtering
Dual protection stainless steel tank
Digital sterilization care

Cons

The cost of the RO is higher compared to other products

3. Eureka Forbes Aquasure from Aquaguard Smart Plus RO+UV+MTDS Water Purifier

Eureka Forbes is the best selling product in amazon which has various features with the best pricing. This product has huge positive reviews and free installation is provided by Eureka Forbes. To avail free installation you have to call this number 18602661177 ore wait 24 hours you will get the call from the Eureka Forbes.

Features

  • Aquaguard smart plus is a multi-stage that purifies all type of like tanker/borewell water
  • The water purifier comes with advanced RO technology has to purify the water from dust particles, chlorine, and micro-organisms.
  • The capacity of the tank is 6 litres
  • The TDS technology to maintain taste irrespective of its source and reduces the salt content.
  • The smart energy-saving technique it automatically  turns off when the storage tank is full
  • The smart indicator to indicate with different color light when the pressure becomes low, when there is no supply when there is a fault in the machine.
  • The smart plus protects there is voltage fluctuation.
  • This product comes with a 1year warranty.

Pros

Multi-stage purification technology with RO+UV+MTDS
Smart energy saving
Smart energy saving

Cons

Cartridge indicators are absent

4. HUL Pureit Ultima Mineral RO + UV + MF 7 Stage Table top/Wall mountable Black 10 litres Water Purifier

Features

  • The Pureit RO comes with advanced technology that adds natural minerals to makes the healthier and tastier.
  • The purity indicator to forecast the purity water level of indication
  • The hands-free bottle fill zone to fill the automated zone
  • The autoflush cleans the inner membrane on a regular interval
  • The purification system is done on 6 stages along with RO+UV  technology
  • The digital advanced alert system helps give the alarm before 15 days to change the Germkit gets over
  • It removes viruses and antibacterial elements from the machine
  • The storage capacity is 10 litres
  • The product comes with a 1-year warranty

Pros

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Cons

Con

Pros

  • Hands-free bottle fill zone
  • 6 stage purification technology
  • The digital advanced alert system
  • Autoflush
  • Purity indicator

Cons

  • The cost is high
  • Maintenance cost is not affordable
  • Customer service is low

5. AO Smith Z8 Green RO 10 Litre Wall Mountable, Table Top RO+SCMT Black 10Litre Water Purifier

  • Another Best Selling Water Purifiers India 2020

Features

  • The Best AO smith Z8 series comes 8 stages of steps.
  • Advance Recovery Technology to save twice compared to another purifier
  • Only water purifiers that have an option to provide hot water at two temperature options of 45 and 80-degree Celcius.
  • The silver charged membrane technology that helps to purify microorganisms, the double purification to make the healthier and tasty.
  • The mineralizer technology to add necessary natural minerals to maintain with pH level.
  • Advanced alert technology that to indicate when the filter change is required.
  • The first RO water purifiers that contain night assist that glows during the night
  • The purifiers come with a 1-year warranty
  • The storage capacity of the tank is 10 litres.

Pros

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Cons

Con

Pros

  • 8 stage purification technology
  • Mineraliser technology
  • Advanced alert technology
  • Night assist
  • Silver charged membrane technology
  • Hot water

Cons

  • Expensive
  • Noisy

6. Tata Swach Viva Silver UV+UF Wall Mounted 6-LitreWater Purifier

Features

  • The Tata Swach comes with 4 stage purification technology
  • Double protection using UV and UF that to reduce the antibacterial elements
  • The storage capacity is 6 litres
  • The water purifiers come with a 1-year warranty
  • The capacity if 30 litres
  • Zero contaminated tanks that keep free from tank cleaning

Pros

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Cons

Con

Pros

  • Double purification technology
  • 4 stage purification
  • Zero contaminated tank
  • UV fault indicator

Cons

  • Customer service is not good
  • Some machines faces faults
  • It does not support all type water

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

This product is the Best Water Purifier Under 10000. RO UV technology used in this water purifier. While purifying 650 ml of water going out from the machine. We can save this water to use it for washing clothes.

  • The storage capacity is 7 litres
  • The 6 stages of purification technology
  • Comes with a 1-year warranty
  • 1500 TDS ppm can be used for purification
  • Indicators are available for the indication of tank full, fault alarm
  • The mineralizer helps to retain essential minerals
  • The carbon filters to make the taster
  • The purification capacity is 12 litres

Pros

6 stage purification process
Suitable for all type of water
Retains minerals

Cons

Alarm indication not available for filter change

Water Purifier Buying Guide:

Water pollution is a major problem in the country and it causes many problems. The amount of water source comes from various mediums like bore water, well, ponds, municipal water, the pipes that supply water and storage tank are also cause of contamination. Now it has become to purify water through purifiers, many RO water purifiers have comes to provide clean water. The water contains many suspended particles like pH, dissolved oxygen, heavy metals, water pressure, water quality, and visible impurities. TDS dissolved impurities salts in water, it contains both organic and inorganic salts that are harmful below and above-average value.

Here we have discussed the things that need to be considered before choosing the water purifier. 

  • Test the quality of water – Testing the quality of water is an important factor that needs to be considered, the water tests are carried out in the laboratory. The water can also be tested at home using a water testing kit that to find the microorganisms, hardness, chemical contents present in water.
  • The type of water purifier – There are many types of water purifier methods according to the water quality filtration process is selected that is suitable for homes. 
    • Activated carbon filter – This technique purifies water by absorption method. The water is allowed to pass through the activated carbon filter which absorbs the harmful substances for present in water. This filter is also used in Uv and RO filtration system. The activated carbon also removes the color and taste present in water.
    • Ultraviolet Purifier – This technique to remove with the microorganisms like bacteria, viruses, protozoa, without affecting the essential minerals in water and provides chemical-free and pure water. Suitable for water TDS below 500PPM
    • Reverse Osmosis Purifier – This technique uses a semi-permeable membrane for filtration, this technique removes the essential minerals from water. Suitable for water TDS above 500ppm and the filtration process reduces the TDS to consumable level. The purifier requires electricity for the purification process and using the pressure it urges the water to send through membrane helps most of the suspended particles are removed.
    • Ultrafiltration – The ultrafiltration removes the microorganisms and suspended particles, it contains a semi-permeable membrane and it doesn’t require electricity. The purifier works on the normal water tap and doesn’t wastewater. The membrane pores are smaller hence smaller particles are removed and the process takes place under gravity hence the impurities stay back.
  • Water Pressure – The purifiers need water pressure in the range of 5-40 PSI, If the water pressure is above 40 PSI then pressure reducing valve is required to be equipped along with the purifier. If there is low water pressure then pressure booster is required.
  • Contamination – The water is contaminated by different sources like agricultural waste, industrial waste, pesticides, these particles, and microorganisms that need to be removed using UV or RO filtration.
  • Location of the purifier – The purifier needs to be located near the water source and grounded electric supply is required. The Distance between the purifier and water point must be within 3 feet. The purifier must be away from direct sunlight and proper water outlet must be connected
  • Power Consumption Supply – most of the purifiers require electric supply, hence continuous electricity must be equipped with the purifier.
  • Maintenance – Proper maintenance is required for the purifier to change the filters and membranes. Frequent service is required for purifiers for inspection purposes.
  • Budget – The first that needs to be kept in mind before buying purifier is budget, according to the budget and features the purifier various. There are many brands available in the market in various ranges. We have listed many purifiers in various ranges and features.
  • TDS – It is also a major factor to decide the water purifier, if it is high then the purifier helps to reduce the level to the drinking level if the low then the UV water purifier is suitable. 
  • The other features in the purifier are double filtration process includes UV and Ro filtration, also some purifier contains all purifiers together UV+UF+RO purification, stainless steel or copper storage tank that keeps water safe, energy-saving mode when the purifier is in standby mode, auto-shutoff when the storage is full, mineral booster to add essential minerals. Compare purifiers which other brands and model that gives a clear view of purifier features and advantages.

The water contamination is a major concern hence these purifiers help us to provide safe water and proper purifier helps us to filter all the suspended particles that are present in water. The above features help to provide a clear view of the things that need to consider before choosing the water purifier that provides clean water that is free from pesticides, chemicals, and microorganisms.

What is RO Purifier

RO Purification is the advanced technology that to purify water, it works on the Reverse Osmosis technology, which uses a semi-permeable membrane that to remove impurities from water. The pressure is applied to the water to pass through the membrane to make the water less concentrated. The molecules greater than 0.0005micron are filtered out through the RO membrane, the dissolved impurities, microorganisms are also removed. The impurities that are removed in RO filtration is Fluoride, Lead. Chlorine, pesticides, detergents, nitrates, sulfates., etc.,

The drinking water is not secure since all water is contaminated with impurities, the water comes from different sources like pond, reservoir, rainwater, river water and groundwater, the pipes that supply water and tank that stores are also not clean they contain bacteria, virus, mud, bad odor, taste hence it requires purification. The ancient method of cleaning water is they add chlorine to water it helps to removes the chemicals and microorganisms since it kills protozoa it has not become popular. The next method was an Active carbon filter it to removes the harmful gases and organic elements from water. Then Bio-sand filter was used to removes that impurities, chemicals and microbial elements from water. The next method was RO filtration that purifies water in multiple stages, also now along with RO filtration UV, UF and ultrafiltration have come to make water 100% safe for drinking.

The membrane has very fine holes that it removes impure particles as well as essential minerals from water. The above chart helps to show the size of particles present in water. The purified water is used for drinking purpose, the dirt particles are drained out from purifier. There are different types of RO water purifiers available in the market with specific features and the TDS decides which RO water purifier purifies the water for drinking purposes.  The RO water purifier helps to make water tastier, healthier by removing impurities from water and maintenance is also very easy. The filtered wastewater can be used for kitchen purposes. In our portal, we have listed the best water purifiers in all ranges.

RO purification stages

The stages of RO purification contains:

  • Sediment layer – this is the first step in purification. It helps to the visible impurities like dust, dirt also reduces the chlorine the water. The molecules that are in 20 microns are removed in this layer.
  • Carbon filter – Activated carbon to removes the organic impurities, removes the taste, odour from water. The molecules that are about 5 microns are removed in the filter also it removes synthetic chemicals and makes the water consumable.
  • RO Membrane – This layer is made of synthetic material that removes TDS and chemicals that are harmful.
  • Post Carbon Filter – This helps to reduce secondary impurities and make healthy water. This removes the minerals from water. 

Most purifiers remove essential minerals from water hence the advancement in water purifiers has made the addition of a TDS controller and mineral booster that add essential minerals to the water. Also, some water purifier provides  UV, UF protection to water. The purified water is stored in the storage tank and they come in ABS plastic and copper. If the water pressure is less than 45 psi then Ro system doesn’t work, also TDS decides the Ro functioning and purification, The time for filtration of cold water is more. The filters, membranes must be changed at a period of time. The water purifier requires annual maintenance and for residential usage mostly it doesn’t require electricity whereas for commercial purposes it requires electricity and electric pumps.

RO Applications

Most of the Reverse Osmosis technology is used in Household usage, commercial usage, and industrial purposes.

  1. Water Desalination: This helps to convert saltwater to freshwater, it’s a major water resource to supply fresh water.
  2. Food industries: The growth in food industries has raised water needs, hence RO helps to provide pure water for cooking, juices.,
  3. Pharmaceutical: Medicine manufacturing companies require more water supply for an antibiotic solution and powder manufacturing.
  4. BoilerFeed – For steaming purpose  we require water hence RO water can be consumed
  5. Hospitals – Hospitals require more water for domestic as well as drinking purposes. Hence Ro purification has become essential 
  6. Mining Industry – The mining industry requires more water for cleaning purposes.
  7. Water supply for domestic purposes: The demand for water can be fulfilled by recycling sewage water for domestic usage.

Advantages of RO purification

  • Helps to remove TDS and dissolved chemicals with the water
  • Purifies all types of water
  • Provides 100% pure and safe water

Disadvantages

  • Works with electricity
  • Depending on the TDS controller the purified water is safe

What is UF Water Purifier

The water filters have become a necessary thing since water is mostly contaminated and not suitable for drinking. There are many techniques available for water purification, Reverse osmosis purification, Ultrafiltration, Ultra-violet disinfection. Depending on the type of water the purifier varies. Ultrafiltration is an advancement in water filters that helps to remove the impurities suspended in water. The principle behind UF water purifier, using gravity it pushes the impure water is poured from the top layer, the purified water is collected in the bottom layer, it doesn’t require electricity for the UF filtration. It works with pressure on the water and also it is suitable for tap water also. It has removes the microorganism and organic impurities and make the water safe and pure. 

The UF pore size is bigger than the RO membrane, the difference from RO that UF doesn’t require electricity, it can be used in any place and suitable for frequent power consumption issue areas. UF filter helps to maintain water taste and it doesn’t require any chemical for purification. Electricity has become a major issue in many places hence UF is purifier is suitable for all locations. The mechanism for reverse osmosis, microfiltration, ultrafiltration are, all the same, they differ only with the size of pores in the semi-permeable membrane.

There are many types of membrane available, tubular modules, hollow fiber, spiral-wound modules, plates, and frame. 

The tubular membrane is made of the polymeric membrane that is kept in plastic material, the steel rod and the size of it is 5-25mm and length of 5-25, the disadvantage of this membrane is low permeable, low packing density.

Hollow fiber is made of tube and shell arrangement, the size of the membrane is 0.2-3mm the drawback of this membrane is the maintenance cost is high. 

Spiral wound modules are made of flat membrane layer and separated by thin meshed spacer material, the sheets are rolled on a central perforated tube, the maintenance cost is affordable

Plates and frame is a flat plate that is separated by mesh, the size of plates are 10-60cms and height various from 0.5-1mm 

The principle behind UF purification

The purifier uses the hydrostatic static pressure to pass through the permeable membrane.

J = TMP

      J = TMPRt

J is the Flux flow rate through the membrane

TMP is the Transmembrane pressure

𝜇 is the solvent viscosity

Rt is the total resistance of membrane and fouling resistance

The purification is based on the pressure of the water, the strategies are flow-type, flow velocity, flow temperature. The flow-type can either be crossflow or dead-end flow. 

Crossflow

The cross-flow takes place in a parallel direction to the membrane surface, these are preferred for continuous operations as the membrane removes solids. 

Deadflow 

The dead flow occurs in the direction that is perpendicular to the membrane surface. The configuration of dead flow it is suitable only for batch operations. 

Application of Ultrafiltration

  • It can be used as safe drinking water – since the water is free from chemicals, toxins, microorganisms.
  • Laboratory usage
  • desalting
  • Milk manufacturing

Advantages

  • It doesn’t require electricity for purification
  • The life of UF membrane is longer hence frequent maintenance is not required
  • It doesn’t drain out any purified wastewater.
  • Cost-effective and durable
  • It removes all suspended particles in water, it removes all germs and impurities
  • No maintenance required

Disadvantage

  • It doesn’t purify high TDS water
  • It cannot remove heavy metals and toxic elements

What is TDS in water

In day to day, life water has become more contaminated and contains more harmful chemicals hence best filtration technique is required to filter the water and make it consumable. The water contains more TDS, this means total dissolved solids that are harmful chemicals with the water. It indicates the total concentration of dissolved impurities both organic and inorganic substances. The substances that are greater than 2 microns are termed as dissolved solids. The inorganic elements that are present in water are magnesium, calcium, potassium. When the mineral density is low it doesn’t affect the health but when the density level is high it affects the body The TDS level in water that is advised by EPA secondary regulation is 500mg/litre is the maximum contamination water. If the water TDS level is more than 1000mg/litre, then it is not recommended for drinking. There are many instruments to check the TDS level of water. If the TDS level is less than 300mg/l then it is advised as pure water, if the value is 300-600mg/l then it is rated as good, 600-900mg/l then it is fair, 900-1200mg/l then it is for and not advisable for drinking.

The pH also decides the water quality, the pH level must be 6.5-8.5. When the TDS is less than 50mg/l then it does not contain any mineral in water and are not acceptable, 50-500mg/l is acceptable for drinking, 500-1200 is not acceptable, can be used after RO purification.1200-2000mg/l is not acceptable for drinking, can be used if you have RO water purifier that purifies TDS level up to 2000mg/l, above 2000mg/l is not advisable for drinking. By removing TDS from water it helps to make the water tastier and healthier, it reduces the hardness of the water.

The TDS level can be checked in the home itself using 2 methods:

  1. Digital TDS meter
  2. By using water filters paper and scale

Digital TDS meter

The digital TDS meter helps to check the quality of water, hardness of the water and confirms whether it can be consumed.

Switch ON the meter, now press the TEMP button to check the temperature of the water, it indicated in celsius metric, to change to TDS mode again press the TEMP button. Remove the cap of the metric, keep the meter in water up to the maximum immersion level. Make sure there are no bubbles in the water and wait till the measurement gets stable. Now press the HOLD button to view the reading. If the reading shows x10 then the reading is multiplied with 10, it is the TDS level of the water. Again close the protective cap and keep it safe.

Using Filter Paper and a Scale

This is an old method that is easy to find at the TDS level. For this method you require a sterilized beaker, filter paper, stirring stick, a pipette, an evaporating dish, measuring scale. measure the evaporating dish in milligrams and note as “A”. Add the sample water in the sterilized beaker and stir it well to make the suspended particles present evenly in water, using the pipette to measure 50ml of stirred water. Add the water 3 times in the filter paper, you will find sediment present over the filter paper, now add the sediment to the evaporating dish and let it dry and calculate the weight of the evaporated dish and mark it as “B”. To check the TDS from A and B here is the formula TDS = {(A-B)*1000}/ml

How Much TDS is Good For Health

Water is an essential thing for humans, the source water is groundwater, borewell, and municipal water. The water is contaminated from natural sources, sewage, industries, and agricultural waste, these factors cause water not suitable for safe drinking water. They cause TDS in water. The level in water must be in the range of 150-300mg/litre which is approved by WHO is only suitable for human health. The water contains various particles like pH, dissolved oxygen, color, odour, hardness, microorganisms and TDS.

The pH level also decides the drinking water either it is soft or hard water. The pure water contains a level of 7, lower to this range is acidic water and higher is basic water. The normal consumable pH range is 6.5-8.5. Hardness in water is because of the calcium and magnesium.

TDS is the total dissolved solids that indicate the inorganic salts and organic materials in water. Mostly water contains calcium, magnesium, sodium, potassium, carbonate, hydrogen carbonate, chlorine, sulfate and nitrate anions. If the TDS level in water is less than 300mg/litre, if the range is between 300-600mg/litre its good for drinking, if it’s 600-900 the water is fair, if the range is 900-1200 its poor water, if the level is above 1200 it cannot be used, also water with low concentration cannot be used since they cause adverse effects to the body.

The analytical method for measuring TDS is using specific conductivity, it uses conductive probes that measure the ions in water, the measurement is then converted to TDS value. High concentrated water is measured using gravimetric. This can be measured at home using a meter, electric conductive meter, filter paper and weighing scale.

TDS = {(A-B)*1000}/ml sample

Where A is the weight of the evaporating dish and water filters and B is the weight of the evaporating dish.

How to Remove TDS from Water

The Reverse Osmosis technique helps to reduce the TDS level and make sure the water can be used for drinking. The purifiers contain an inbuilt cutting edge technology that helps to reduce the TDS level. RO forces the water under pressure through a membrane, the substances that are less than 0.0001 microns are passed out through the membrane and is free from TDS.

Distillation is one of the techniques to remove TDS, in this, the water is boiled and vapor is formed, the vapor is cooled back to the liquid form, the dissolved impurities are unable to vaporize hence it stays back in the boiled product.

Deionisation is used for removing TDS, the contaminated water is allowed to pass through a positive and negative electrode. The ion-selective membrane first separates the positive ions from water and forwards to the negative electrode. 

Conclusion

The right RO water purifiers help to remove the TDS from water and make it healthier. Hence our guide helps you to choose the Best Water Purifier in India 2020 in the right manner.