Best Water Purifiers in India for Home | Buying guide | Marketarea
Best Water Purifiers in India for Home

Best Water Purifiers in India for Home | Buying guide | Marketarea

Are you look for best water purifiers in India for home? Or do you want to know about different types of water purifiers?

Check out our Guide section towards the end to know which type of water filter or purifier is suitable for your home. It provides guidelines to test water and how to select the best home water purifier.

best water purifiers in india for home

In the FAQs towards the end, we try to answer most common questions. If you have a question and it is not answered, write a message in the chatbot in bottom right corner, we will reply to you and also share in the blog to help others.

Then read the reviews below of the best home water purifiers. We have reviewed few RO, UF, UV and NF water purifiers. Read in the Guide on which is the best water purifier to use at home - RO or UF or NF, based on TDS value. And also read the different stages of filtration system and how they are useful, to help while reading the reviews.

Best Water Purifiers in India for Home List

1

Kent Supreme Lite 2020 RO + UF + UV + TDS Control

2

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

3

HUL Pureit Ultima Mineral RO + UV + MF 7 Stage

4

Eureka Forbes Aquaguard Marvel 8L RO

5

HUL Pureit ECO Water Saver RO Water Purifier 10 litres

6

Faber Galaxy Plus RO+UV+UF+MAT 9L 8 Stage Mineral Water Purifier

7

LG Puricare RO + UV Multi-stage Filtration Water Purifier 8 litres

8

AO Smith Z9 Green RO+SCMT Multistage Water Purifier 10 litres

9

KENT Maxx 7-Litres Wall Mountable/Table Top UV + UF Water Purifier

10

Eureka Forbes AquaSure from Aquaguard Amrit 20-Litre Water Purifier

Best RO Filter Water Purifiers in India

Note: Use RO filter only if TDS > 300, use TDS test mentioned in the guide. Safe level maximum is 500 and low is 50. Ideal is between 85 to 150.

Also, if you know the water is polluted at source or on the pipe system to your home. TDS may be still low with harmful pollutants. Get a lab test to confirm in such a case.

RO systems have higher maintenance and waste water output is high between 65% to 80%. You can reuse the waste water for other purposes like watering plants (depending on nature of pollutants).

1. Kent Supreme Lite 2020 RO + UF + UV + TDS Control

Kent has been one premier water purifiers company with innovative best water filters for home. Kent company has been in the Indian water purifiers market for 25+ years. They have multiple popular models. You can check out the Supreme Lite 2020 RO+UF+UV+TDS Controller model, which is the best RO water purifier. Also see other models using the link provided for features you might be interested in.

Filtration System: This model comes with RO+UV+UF+TDS control +UV in tank. These are in addition to the standard Sediment and Carbon pre and post filters.

The MTDS in conjunction with UF filter in a safe and clean way, will replenish with minerals and get TDS to programmed value. You can set TDS level to between best in the range of 85 to 150.

Special Features:

Zero water wastage: Kent has not specified the reject water ratio, but we believe it be below 65% with efficiency features. As per Kent this feature means recirculate the reject water back to overhead tank with the pump they provide for free. However, it would increase the concentration of pollutants after a while and hamper the efficiency of filtration.

In our view, this is more for selling and can be done for other brands as well. Except that other brands do not provide a free pump to recirculate reject water.

Few things to know about this purifier at installation time:

Kent Supreme Lite
Tank Capacity
8 Litres
Tank Material Type
Food grade plastic
Applicable TDS Range
upto 2000 mg/l
Water Flow Rate
20L /per hour
Filtration System
Sediment Activated Carbon Block Filter MTDS UF - RO UV Post Activated Carbon Filter UV-LED in Tank Flow restrictor to and auto flushing system to improve efficiency. Zero waste water with free pump to recirculate the reject water.
Mineral Cartridge (MTDS)
Yes
Input Water Temperature
10 - 40°C
Inlet Water Pressure
0.3kg/sq cm - 4.0kg/sq cm; Uses free booster pump
LED Indicators
only sound alerts
Filter Life
6 to 12 months, indicator turns ON
Auto-shut off mechanism
Yes
Auto Start
Yes
Overflow Protection
Yes
Input Power
100 - 250V AC 50 Hz
Power Used
60W
Warranty
1 year + 3 years (no service fee)
Dimensions
40 x 25 x 52.5 (LWH cm)

PROS

CONS

This model of Kent purifier is the best water purifier for home, especially with highly contaminated water supply or brackish water near sea. It is also one of the efficient RO water purifiers.

Maintenance costs are high, so go for it based on absolute need only. Also check out the Kent New Grand model using the link, in case those features meet your

9.8

TOTAL SCORE

Kent Supreme Lite 2020 RO + UF + UV + TDS Control

Best RO water purifier for home
Our Rating
4.8/5

2. Eureka Forbes AquaSure Aquaguard RO+UV+MTDS 7L Water Purifier

Eureka Forbes brand of Aquaguard water filters and purifiers are quite popular in the Indian market for more 25+ years. It is primarily RO+UV with TDS controller is the best water purifier for home.

This comes in two different models Aquaguard Amaze and Delight with RO+UV with TDS controller, but functionally the same. Note that Delight model has other variants which do not include all the filtration stages.

Filtration System: The AquaSure model uses 5 stage filtration/purification system. It is 6 stages including the MTDS to replenish with minerals and get TDS to programmed value. You can set TDS to desired level. Best is to set it to between 85 to 125.

Special Features:

Few things to know about this purifier at installation time:

Eureka Forbes AquaSure
Tank Capacity
7 Litres
Tank Material Type
Food grade plastic
Applicable TDS Range
upto 2000 mg/l
Water Flow Rate
15L RO /36L UV/per hour
Filtration System
Sediment Filter Activated Carbon Filter (Chemi Block) MTDS RO Membrane Activated Carbon UV Disinfection Chamber
Mineral Cartridge (MTDS)
Yes
Input Water Temperature
10 - 40°C
Inlet Water Pressure
0.3kg/sq cm - 4.0kg/sq cm
LED Indicators
Power On, Tank Full, Purification On
Filter Life
6000 (As per standard test conditions)
Auto-shut off mechanism
Yes
Auto Start
Yes
Overflow Protection
Yes
Input Power
150 - 270V AC 50Hz
Power Used
40W
Warranty
1 year
Dimensions
23.8 x 30 x 43 (LWH cm)

PROS

CONS

This model of Aquasure with RO + UV + MTDS is the second best water purifier from the trusted Aquaguard. Would work well for most water sources and economical compared to the first position Kent.

However, similar to Kent you will get the additional UF filtration in the same model.

Checkout the link below and also more details in the table below it for both models AquaSure Amaze and Delight.

9.8

TOTAL SCORE

Eureka Forbes AquaSure Aquaguard

Best water filter in home from reliable Aquaguard!
Our Rating
4.9/5

3. HUL Pureit Ultima Mineral RO + UV + MF 7 Stage

Pureit models from HUL are also water filters for home popular in the market. HUL Pureit Ultima also stands out as the best water filter.

Filtration System: The HUL Pureit Ultima model comes with 7 stage water filter. Check out the different stages in specifications table below. Pureit Ultima uses Micro filtration membrane for remnant pollutants after the RO and UV filtration.

The Germkill filter kit includes the mineral cartridge for adding calcium and magnesium to enhance the taste of water.

Special Features:

Few things to know about this purifier at installation time:

Eureka Forbes AquaSure
Tank Capacity
10 Litres
Tank Material Type
Food grade plastic
Applicable TDS Range
upto 2000 mg/l
Water Flow Rate
28L/per hour
Filtration System
Pre-Sediment Filter (SF) - external filter supplied with purifier
Pre-RO Carbon Filter
Post-Carbon Sediment Filter
RO Membrane
UV Chamber
Post RO Carbon Filter
Micro Filtration (MF) Membrane
Mineral Cartridge (MTDS)
None
Input Water Temperature
10 - 40°C
Inlet Water Pressure
0.3kg/sq cm - 4.0kg/sq cm
Indicators/Alerts
Digital display
Filter Life
about 6 months 3000 L; Indicator turns on
Auto-shut off mechanism
Yes
Auto Start
Yes
Overflow Protection
Yes
Input Power
100 - 240V AC 50 Hz
Power Used
60W
Warranty
1 year
Dimensions
31.1 x 36 x 48.50 (LWH cm)

PROS

CONS

Summary:

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It is also the best laptop for graphic designers, videography, animation and content creators.

9.6

TOTAL SCORE

HUL Pureit Ultima Mineral RO + UV + MF 7 Stage

Cleanest water with double membrane and UV filtration
Our Rating
4.5/5

4. Eureka Forbes Aquaguard Marvel 8L RO

The Marvel model with UV e-boiling and active copper is the second best Aquaguard water purifier in this list.

There are other variants of the Marvel model which you can check out in the link provided at the end of this model review.

Filtration System: The Marvel Aquaguard model uses 7 stage filtration/purification system. Active copper technology cartridge infuses copper ions for pure and healthy water. Unlike other copper water purifier, there have been no reports of copper or metallic taste.

UV e-boiling provides pure water same as water boiled for 20+ minutes.

Special Features:

Few things to know about this purifier at installation time:

Eureka Forbes
Tank Capacity
8 Litres
Tank Material Type
Food grade plastic
Applicable TDS Range
upto 2000 mg/l
Water Flow Rate
15L RO /36L UV/per hour
Filtration System
Sediment Filter (I-Filter)
Activated Carbon Filter (Chemi Block)
Mineral Guard
MTDS (Taste Adjuster)
RO Membrane (RO cartridge)
UV e-boiling
Active Copper
Mineral Cartridge (MTDS)
Yes
Input Water Temperature
10 - 40°C
Inlet Water Pressure
0.3kg/sq cm
Indicators/Alerts
Power On, Tank Full, Purification On
Filter Life
6000 (As per standard test conditions)
Auto-shut off mechanism
Yes
Auto Start
Yes
Overflow Protection
Yes
Input Power
150 - 280V AC 50Hz
Power Used
45W
Warranty
1 year
Dimensions
32 x 27.5 x 41 (LWH cm)

PROS

CONS

This model of Pureit Eco Water Saver is the only one with best recovery rate of purified water. Would work well for water sources with less than 2000 TDS.

You would also get similar models in smaller capacities, less than 10 litres. Checkout the link below and also more details in the table below it.

9.7

TOTAL SCORE

Eureka Forbes Aquaguard Marvel 8L RO

One more best RO water purifier from Aquaguard !
Our Rating
4.9/5

5 HUL Pureit ECO Water Saver RO Water Purifier

Pureit models from HUL are also water filters for home popular in the market. HUL Pureit ECO Water Saver stands out as one of the highest recovery rate RO water purifiers.

Filtration System: The HUL Pureit Ultima model comes with 7 stage water filter. Check out the different stages in specifications table below. Like its Ultima model uses Micro filtration membrane for remnant pollutants after the RO and UV filtration.

The Eco Recovery Technology gives one of the highest rates of purified water at 60% (as per HUL tests) compared to the typical 35% of most other RO water purifiers.

The Germkill filter kit includes the mineral cartridge for adding calcium and magnesium to enhance the taste of water.

Special Features:

Few things to know about this purifier at installation time:

HUL Pureit Eco Water
Tank Capacity
10 Litres
Tank Material Type
ABS Food grade plastic
Applicable TDS Range
upto 2000 mg/l
Water Flow Rate
24L/per hour
Filtration System
PP Melt Blown Pre-Sediment
Filter(external filter supplied with purifier)
Pre-RO Carbon Filter,
Mesh Filter
Reverse Osmosis Membrane,
UV Reactor,
Post-RO Carbon Filter
Micro Filter Membrane
Mineral Cartridge (MTDS)
Yes
Input Water Temperature
10 - 40°C
Inlet Water Pressure
0.7kg/sq cm - 2.1kg/sq cm (10 psi - 30 psi)
Indicators/Alerts
LED indicators for status and service alerts
Filter Life
Indicator turns on 15 days before replacement
Auto-shut off mechanism
Yes
Auto Start
Yes
Overflow Protection
Yes
Input Power
110 - 240V AC 50 Hz
Power Used
60W
Warranty
1 year
Dimensions
31.1 x 36 x 48.50 (LWH cm)

PROS

CONS

This model of Pureit Eco Water Saver is the only one with best recovery rate of purified water. Would work well for water sources with less than 2000 TDS.

You would also get similar models in smaller capacities, less than 10 litres. Checkout the link below and also more details in the table below it.

9.6

TOTAL SCORE

HUL Pureit ECO Water Saver RO Water Purifier 10 litres

Highest Water Saver RO Water Purifier!
Our Rating
4.5/5

6 Faber Galaxy Plus RO+UV+UF+MAT 9L 8 Stage Mineral Water Purifier

Faber Galaxy Plus from Faber of Italy, is manufactured in India. It comes with a large 9L water purifier at an economical price.

Faber Galaxy comes in two variants the Plus model with UV filtration and regular Galaxy without UV. Otherwise, rest of the features are the same.

Filtration System:
The Galaxy Plus model uses 8 stage filtration/purification system. Check out the different stages in the technical specifications table below. One of the plus points for this purifier is replaceable filters for each of the stages, making it less expensive.

However, note that there are no indicators requiring replacement at predetermined times varying from 6 months to 12 months for each of the filters.

Special Features:

Few things to know about this purifier at installation time:

Faber
Galaxy Plus
Tank Capacity
9 Litres
Tank Material Type
Food grade plastic
Applicable TDS Range
upto 2500 mg/l
Water Flow Rate
13.5L/per hour
Filtration System
Sediment Filter 20 micron - external filter
Pre Carbon Filter
Sediment Filter 5 micron
RO Membrane upto 2500 TDS
Post Carbon Filter + MAT filter
UF Membrane
UV Chamber
Mineral Cartridge (MTDS)
Yes
Input Water Temperature
11 - 40°C
Inlet Water Pressure
0.3kg/sq cm - 4.0kg/sq cm
Indicators/Alerts
Water level only
Filter Life
6 to 12 months varies by filter
Auto-shut off mechanism
Yes
Auto Start
Yes
Overflow Protection
Yes
Input Power
160 - 240V AC
Power Used
35W
Warranty
1 year
Dimensions
36 x 21 x 46 (LWH cm)

PROS

CONS

Except for lack of indicators, Faber Galaxy Plus is one best water purifiers at budget price.

Check out the Faber Galaxy and other Faber models at link below. And also, more details in the specifications table below it.

9.6

TOTAL SCORE

Faber Galaxy Plus RO+UV+UF+MAT 9L 8 Stage Mineral Water Purifier

Economical & Only one to clean upto 2500 TDS hard water!
Our Rating
4.6/5

7. LG Puricare RO + UV Multi-stage Filtration Water Purifier

The LG Puricare water purifier is one of the best RO water purifiers in India. It gets the job done thoroughly.

LG Puricare comes in different variants, with different additional or fewer filters and purification stages.

Filtration System:
This LG Puricare model uses 5 stage filtration/purification system. Check out the different stages in the technical specifications table below. One of the plus points for this purifier is replaceable filters for each of the stages, making it less expensive.

However, note that there are no indicators requiring replacement at predetermined times varying from 3000 litres for external sediment filter to 6000 l for rest of the filters, anti-scalant module and mineral module.

Special Features:

Few things to know about this purifier at installation time:

LG Puricare RO + UV
Tank Capacity
8 Litres
Tank Material Type
ABS body with stainless steel tank
Applicable TDS Range
upto 2000 mg/l
Water Flow Rate
None
Filtration System
Sediment Filter with anti scalant module - external filter
Composite filter (Sediment+ Carbon)
RO Membrane
Post Carbon Filter+Mineral booster
UV in the tank
Mineral Cartridge (MTDS)
Yes
Input Water Temperature
10 - 40°C
Inlet Water Pressure
0.1kg/sq cm - 8.8kg/sq cm
Indicators/Alerts
Water level, UV sterilizing LED indicators
Filter Life
Outside sediment filter 3000L, rest 6000L
Auto-shut off mechanism
Yes
Auto Start
Yes
Overflow Protection
Yes
Input Power
230V AC 50Hz
Power Used
40W
Warranty
1Year, 10 years for steel tank
Dimensions
36.5 x 28.3 x 50.6 (LWH cm)

PROS

CONS

LG reputation for quality makes this a worthy consideration. Has just the sufficient enough levels of filtration. May be slightly premium compared to other water purifiers.

Check out this LG Puricare and as well as other models of LG with different feature options at link below. For more details on this model see the specifications table below it.

9.6

TOTAL SCORE

LG Puricare RO + UV Multi-stage Filtration Water Purifier

Simplest of the RO water purifiers backed by LG quality!
Our Rating
4.8/5

8. AO Smith Z9 Green RO+SCMT Multistage Water Purifier

AO Smith has become well known in the home appliances market in India. Z9 Green is the best AO Smith water purifier.

AO Smith comes in different variants, with different additional or fewer filters and purification stages.

Filtration System:
The AO Smith Z9 Green model uses 8 stage filtration/purification system. Check out the different stages in the technical specifications table below.

It incorporates AO Smith patented technology filters like – Advance Recovery Technology ART and Side Stream RO membrane which doubles the purified water as per AO Smith tests. THE SCMT (Silver Charged Membrane Technology) ensures double protection with elimination of secondary microbial contaminants.

The filter changes are required after 7000 litres and you do get the convenience of service alerts before the replacement needs to be done.

One of the few water purifiers which also provide the convenience of 1 litre of hot water at 45 degree C or 80 degree C. , through the front panel. However, note that the hot water will be available again, only when the main tank is full. The purifier restarts only when the main tank is at 50%.

Special Features:

Few things to know about this purifier at installation time:

AO Smith Z9 Green
Tank Capacity
10 Litres (9 litres + 0.8 litres hot water tank
Tank Material Type
ABS body food grade
Applicable TDS Range
upto 2000 mg/l
Water Flow Rate
upto 15 litres/per hour
Filtration System
Pre-filter
Sediment Filter
Carbon Filter
ART (Advanced Recovery Technology)
Patented side stream RO Membrane
Mineralizer Technology (MIN-TECH)
ZX Double Protection Dual Filter (SAPC + SCMT: Silver Activated Post Carbon Block Silver Charged Membrane Technology)
Mineral Cartridge (MTDS)
Yes
Input Water Temperature
10 - 40°C
Inlet Water Pressure
0.5kg/sq cm - 2.1 kg/sq cm (7psi to 30 psi)
Indicators/Alerts
Digital display, water level, Service alerts
Filter Life
filter change after 7000 litres, sensor indicator
Auto-shut off mechanism
Yes
Auto Start
Yes
Overflow Protection
Yes
Input Power
150 - 300V AC 50Hz
Power Used
60W
Warranty
1Year includes all filters and RO membrane upto 2000 TDS
Dimensions
36.9 x 32.6 x 48.2 (LWH cm)

PROS

CONS

AO Smith Z9 Green is one of the best water purifiers in India. The pricing is a bit on the higher side compared to other popular models.

Check out this model Z9 Green and as well as other models of AO Smith with different feature options at link below. For more details on this model see the specifications table below it.

9.6

TOTAL SCORE

AO Smith Z9 Green RO+SCMT Multistage Water Purifier 10 litres

AO Smith’s best RO water purifier with hot/cold water option!
Our Rating
4.7/5

9. KENT Maxx 7-Litres Wall Mountable/Table Top UV + UF Water Purifier

Kent Maxx-7 two stage water purifier is good for the inlet water TDS less than 300 (TDS < 300).

The 7 litre capacity 20 litres ABS plastic body in attractive design, comes with detachable tank for easy cleaning.

Good for all water sources with TDS < 300 and no harmful inorganic pollutants are present.

Make sure to get the water supply tested periodically to make sure that this filtration system is the correct one.


Filtration: Would recommend external prefilter to filter out the sediments. The waterflow is 60 litres per hour.

1st stage is the prefilter to remove all sediments. 2nd stage UV kills all the pathogens bacteria, viruses. 3rd stage UF membrane removes all dead pathogens.

PROS

CONS

Check out the link below for more information on this best water filter for low TDS.

9.8

TOTAL SCORE

KENT Maxx 7-Litres Wall Mountable/Table Top UV + UF Water Purifier

Best UV + UF water purifier
Our Rating
4.8/5

10 Eureka Forbes AquaSure from Aquaguard Amrit 20-Litre Water Purifier

Aquaguard Amrit model is gravity based water filter good for the inlet water TDS less than 150 (TDS < 150).

The large capacity 20 litres ABS plastic body in attractive design and colour, should provide clean water free of almost all pathogens.

The dual nano fibre technology filters with kitanu magnet technology provide 3 stage water purification. Easy to clean, the filters need replacement after 1500 litres.

Make sure to get the water supply tested periodically to make sure that this filtration system is the correct one.

Note, that you may need a sediment filter to remove any particle impurities before using in the water purifier. Otherwise filters would get clogged and need to be replaced sooner.

PROS

CONS

9.5

TOTAL SCORE

Eureka Forbes AquaSure from Aquaguard Amrit 20-Litre Water Purifier

Best Gravity based water filter
Our Rating
4.8/5

Conclusion on buying the best water purifier in India:

We have reviewed 10 best water purifiers in India for different water qualities. Our recommendation is to consider the water quality at home and select the type of water purifier appropriately.

Keep in mind that most municipalities do the purification to some extent and have a TDS below 200. So, you may not need the RO water purifier, which costs more in terms of filter replacements (they have more filtering stages).

Check out the links in reviews for further info. You will get to see more variants of water purifiers that may be suitable for the quality at your home.

If you have any further questions or suggestions, drop a message in the chatbot. One of us at team Amsira Marketplace will get back to you.

A Buying Guide for Water Purifiers

Almost everyone knows to some extent on why water filters are needed – remove impurities (solids), minerals/chemicals, acidity, fluoride in some cases etc. In this guide below we will elaborate on some these again in a comprehensive way. Then we will walk you through different water filters for home. This should help you select from the best home water purifiers in the review section above.

To start with let us why we need water purifier. Common sources of water are – ground water and surface water. Most of the people Water comes from many sources and reasons for contamination can be from –

Ways to know how contaminated can be – by Perception (smell, taste, visible contamination), TDS or laboratory tests.

When you know by Perception or suspect water contamination, you can use the TDS (Total Dissolved Solids) test to get indicators on the dissolved solids which are not known by Perception.

TDS – Total Dissolved Solids refers to any inorganic salts or organic matter that are dissolved in water. A TDS Test measures the ions - anions (negative charge ions) and cations (positive charge ions). It is a measure of the total amount of dissolved ions in the water. Does not reveal any info what is present and how much. But in most cases of known source of the water, it is good enough to decide next step on the type of system to use. Read more on the TDS readings below.

Laboratory tests give a complete report on the composition of the water. It is absolutely essential to get this report, if the source of water is suspect to be contaminated with industrial or farm run-off wastes. A TDS reading in such cases even if low may be due to pesticides than any good beneficial minerals and can be toxic.

Perception Tests and What to expect: Quiet often people can tell by sense of smell, taste and how it looks if it is contaminated or not. Take a look at some of these below:

Looks cloudy. After filling the clear glass with water set it down for any air bubbles to dissipate. If it is cloudy, it could mean hard water which has calcium, magnesium and other minerals. It may be safe to drink, but you can fix with water softener to avoid damage (scale buildup) to pipes.

Other colours – red and orange colour particles or water indicates rusty pipes. Black particles could be rubber in plumbing. Black colour water could mean lead, very toxic from old pipes or contaminated somewhere else. Black stains could be due to mold. Green means algae got into the water supply. Bluish green could be copper.

Smell: If it smells assume it to be unsafe to drink. Rotten egg smell like sulfur could be from bacteria. Chlorine smell or like swimming pool smell could be because of chlorine contamination. Nail polish or varnish kind of smells indicate chemical leak into water supply. Filtering and boiling could remove these.

Taste: If it looks safe to drink and tastes bitter it could be metal contamination. Clean water has a flat, bland taste.

Note that you may not detect all contaminants like bacteria, viruses or other pollutants by perception test only.

Testing with a Strip Kit (Water Quality Test at home) : Many may be aware of pH test strips. Similar to that you get comprehensive test kits which cover pH, hardness and mineral levels. Some of these can detect nitrates from fertilizer runoffs, lead, copper or calcium. Check out the test kit on what all it covers to serve your purpose.

However, note that these are quick tests and not accurate like official lab tests. Use them as first step to confirm contaminated water before lab tests. We have given below a couple of test kits which you can check out online. You can also find similar other test kits which cover select tests.

1. Watersafe Drinking Water Test Kit
2. First Alert WT1 Drinking Water Test Kit

TDS Test: You can use TDS meter to detect the mineral content level in water. It is quick and inexpensive way to detect level of minerals like calcium, magnesium etc. As it detects only things which conduct electricity, it cannot detect microorganisms (bacteria, viruses) or pesticides or lead.

TDS test is quite useful, when the water is from known source like municipal water where it goes through treatment processes or private ground water which is unlikely to have any contamination sources close by. You can get these TDS meters online or from local store. Check out the link below for few good TDS meters available online.

Few good TDS Meters to checkout

At this Wiki link you can get some more info on how to conduct these tests with Test Strips and TDS Meter. Also follow the instructions which come with the meter.

TDS Level and What it means: Follow instructions as above to get the TDS level in water sample. The reading indicates mg of TDS per litre. As per BIS and EPA guidelines the TDS should not exceed 500mg/L.

Ideal TDS value should be between 50 and 300. Most treated water from Municipalities falls into this range.

TDS higher than 300 upto 500 is acceptable for most people but could be problematic in case of any kidney related issues.

pH level: Indicates the acidic or alkaline nature of water. Ideal value is 7. As per both BIS and EPA guidelines it should be between 6.5 and 8.5. Less than 7 pH is acidic water starts having sour or metallic taste to it. It is corrosive in nature and metals like iron, manganese, copper get into water and are bad for health.

More than 7 pH value water is alkaline in nature. Human body is slightly basic/alkaline. Any water pH above 8 is hard water. It will bitter to taste and will not form lather with soap. Also, scales can build up within pipes and damaging the pipes and blocking water. Other than that, it will not generally have bad effect on health. Nuisance value of usability is greater with alkaline water.

Summary on Water Quality: To summarize, safe TDS level should be below 500 mg/L. Better range TDS can be between 50 to 150 mg/L. pH level should be between 6.5 to 8.5, preferably closer to 7. You can do the tests described above. If the water sources are suspect to be contaminated, get the certified lab tests done.

Different Types of Water Purifiers for Home:
Gravity based Water Filtration Systems: These are non-electric water filters and are available both as large size machines to portable sizes. It includes the portable filters which can directly fit on the tap. The filter types can be the ceramic candle filters or UF (Ultra Filtration).

Ceramic candle water filters have been around for a long time and very commonly used as they do not need any electricity. The filtration pore size is 0.5 microns. It is useful to filter out sedimentation (large particles) and most pathogens/microorganisms except for some bacteria and the viruses.

UF Water Filters (Ultra Filtration): The pore sizes of the filter/membrane are around 0.01 microns. Ultra filtration process uses hydrostatic pressure to force water against a semi-permeable membrane. This semi-permeable membrane helps in removing bacteria and different types of microorganisms and bad odor in the water. Do note that pores are still large and do not filter out all the viruses. There is no effect on the minerals and remain in water.

Both of these water filters do not need electricity to work, as the water flows down with gravity. To prevent clogging with sediments a prefilter is sometimes used to trap the sediment particles. Prefilter makes the cleaning candle or UV filters easier and prolongs their life. See the RO filter system below. When inorganic solids are not an issue, UF water filtration system uses UF filter in place of the RO filter, but have similar pre and post filtration stages.

NF Water Filters (Nano Filtration): The pore sizes of these filters are 0.001 microns. They do much better job in filtering out all microorganisms, heavy metals and turbidity. However the minerals (inorganics) are left as is.

Ultraviolet – UV Water Filters: Water is exposed to UV light in a chamber or pipe through which the water passes. It kills all the microorganisms including all viruses. Note the debris (not visible) of microorganisms are still in the water, but are harmless. The UV water filters work well with clean water only. So generally, the UV water filters will have few stages to filter out the sediments before going through UV filter.

UV water filters are used where the main contaminants are mostly sediments and microorganisms. It will not act on any inorganic (minerals) or organic contaminants in the water.

Reverse Osmosis - RO Water Filters: These are most commonly used water filters in India. In these filters, the water pressure forces it through a very fine permeable membrane (0.0001 microns onwards). Purified water on the clean side is collected and the water containing the concentrated contaminants is flushed down the drain. These can filter out all pathogens and most mineral/inorganics. Typically, the RO filters come as multi-stage filtration system, where other contaminants are removed before and after RO filtration.

Different Stages of Filtration System: Generally most of the water purifiers in India come with at least 4 stages. Some of them include stages for better filtration and improved water quality.

The following stages can get included before or after the storage tank. In some cases, additional UV-LED may get included in the storage tank.

Most of the RO water filters available in India come with Prefilter 1 -> Prefilter 2 -> RO Stage -> TDS/pH Controller. UV filter gets included in some models. One important point to note is that in RO filtration, you get a by-product of dirty water, which can be used for watering plants. The waste water output can be as high as 500+ml for every 1000ml fresh water you get.

Also, some of the models include a UF filter in parallel with the RO stage. When the power is off, or when needed the water goes through UF filter instead of the RO filter. See the picture below.

Final Word on Buying Water Filters: To summarize, we have introduced 4 different water filters – Gravity based Filter variants - candle filters and UF; Ultraviolet Filters, Nano Filters and RO Filters.

Do the lab tests to rule out farm/fertilizer or industrial pollutants, as these may need more treatment to be made safe than any of these can provide. As unsafe is not good for other uses as well.

Steps to do before deciding on the kind of water filter to go for:
1. Do the Perception Test and TDS Test.
2. Do the Lab test for detailed breakup.

TDS Value Based Purifier Selection – RO or UF or NF :
3. TDS < 300, UF (Ultra Filtration).
4. TDS > 300, RO (Reverse Osmosis)
5. NF (Nano filtration) water filters are relatively new. Not many options are available. If TDS < 900 but > 300, NF filters.

TDS controller if present in RO system may include UF filter. UV chamber and UV LED other purification mechanisms which can be included for next level of filtration.

Another key point, for most cases 4 stages of filtration are sufficient – Sediment filter stage -> Carbon filter -> UF/NF/RO -> Carbon filter. More stages may be useful based on your lab results.

Also, the combo of RO and UF filtration system, is only for exceptional cases, where UF works for you most of the time. RO in such cases is needed for special health issue cases. Second reason could be more power cuts imply, UF system is needed as fall back option.

Go ahead and read our reviews in the above section and select the best water filter in India according to your requirements and preferences.

Frequently Asked Questions (FAQs):

Which is the best RO water purifier in India ?

Kent water purifier model reviewed in this blog is the best. HUL water purifiers also offer the highest purified water yield with little reject water. Aquaguard water purifiers reviewed offer the best value, service support.

Should I look at only the top 10 best water purifiers in India reviews ?

Buying the best does not make sense always for two reasons. One, it may not be suitable for the water quality at your home.

Second, it might cost you more in the long run, like buying RO water purifier when you don’t need it. Servicing and filter costs will add up.

Or to save money if you compromise and go for non RO water purifier when RO is really needed. Water quality does not have much of a change and not really saved any money.

Which is the best water purifier for Bangalore ?

25% of the households in Bangalore receive water above 200 or lot more TDS. This includes water from borewell via suppliers and corporation supplied water. To be sure, check the TDS in your home water (see the guide above for how to test for TDS). RO water purifier may be the best for most areas in Bangalore.

Which is best UF water filter in India ?

Check out the reviews above at number 9 for the best UF water filter from Kent. Use the link in the review for other models from Kent and Aquaguard as well.

Which are the best water purifiers in India ?

We have reviewed in this blog, 10 best water purifiers for different water qualities. Read the Guide on how to select best water filter or purifier most suitable for the quality at your home.

Is there a best alkaline water purifier in India ?

Most RO water purifiers also include alkaline or pH balancer stage. They include a mineralizer module or filter to add back the minerals and rebalance the pH value.

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