
INTRODUCTION:
Undeniably, the natural resources on the earth are depleting fast while constantly being polluted, & even water isn’t spared in this abuse which makes it justified why the search for the best water purifier in India is growing.
Certainly, thanks to the development of water purifiers which nowadays are more synonyms to RO purifiers that are widely considered technology for purifying water when the TDS level of water in your area is above 300 ppm. Besides, many brands have their purifiers further upgraded with UV & UF membrane along with the RO bracket for enhancing the results.
As your health depends on the water you are drinking, with different models from several brands it may become tedious to choose the best water purifier in India for yourself. Thus, we have researched & reviewed the Top 10 Best Water Purifier in India in 2020 along with a comprehensive water purifier buying guide to light you with the factors & technologies that are important while choosing the best one.
TOP 10 BEST WATER PURIFIER IN INDIA IN 2020
Kent Grand 8-Litre Mineral RO and UV/UF Water Purifier

Undoubtedly, Kent has been serving the water purifier industry for a long time and its water purifiers are one of the best selling RO purifiers in India. Altogether, with advanced technology, responsive excellent after-sales service from Kent & quality pricing it has some best water purifiers in India, of which the most commonly available is the Kent Grand.
CAPACITY | 8 L |
PURIFICATION RATE | 20 L/hr |
POWER USE | 60 W @ 100-250V |
FILTER CARTRIDGES | Sediment, Carbon Block Filter, UF & Post Carbon |
MEMBRANE TYPE | Thin Film Composite RO |
MAX. DUTY CYCLE | 100 L/Day |
PURIFICATION TECHNOLOGY | RO UV/UF & TDS CONTROLLER |
FEATURES:
1. Surprisingly, this technologically advanced water purifier from Kent comes with the double futuristic multiple purification system that helps to remove the bacteria, viruses, or non-reliable dissolved salts from the water. The combination of RO with UV/UF purification methods helps greatly in achieving this.
2. Undoubtedly, it is a fact that the usage of RO flushes away the mineral present in the water. However, there are some minerals that our body should be provided with. As a result, this best water purifier in India from Kent comes with a patented Mineral RO TM technology that controls the TDS of the water in order to replenish the essential minerals that are lost in RO process.
3. All in all, the purifier is built to handle brackish, tap, or municipal corporation water converting them to their purest and cleanest form suitable for drinking.
4. Also, to make the purifying process highly reliable, this water purifier comes with Computer controlled operations that set an alarm when the filter cartridges get blocked or the UV light becomes inefficient in its process. Thus, alerting you well before the condition gets worsened.
5. As we all know water crisis has been a firing cause in the world, thus any wastage of water is not less than a crime in itself. Keeping this mind, the water purifier comes with Save Water technology where comparatively more water is recovered after the purification process. Also, the rejected wastewater from the RO is stored separately in a tank, rather than draining it, so that it can be used for other non-drinking purposes.
6. The other features include water level indicator, auto flushing mechanism & in-built SMPS module for voltage fluctuations.
7. Talking about its build, it has an 8-liter capacity storage tank with the ability to purify 20 L/hr. The body is wall mounted type made of high-grade ABS food-grade plastic with transparent cover. The UV lamp has a life cycle of 5000 hours.
WARRANTY:
This best water purifier in India from Kent comes with 1 Year Warranty + 3 Years No Service Charge Purification.
PROS | CONS |
1. Multiple purification mechanism | 1. High cost. |
2. RO TDS mineral controller | |
3. Maximum recovery in purifying with usage & storage of wastewater as well. | |
4. Flexible alarms and indicators for tracking. |
Havells Max 8-liters RO UV Water Purifier

Certainly, known for its supreme quality products Havells is an established name in India when it comes to electrical products. However, it has got some best water purifiers in India as well to showcase their combination of technology & design together. Of course, Havells Max is an excellent example of the best water purifier in India in terms of its working as well as the design aspect.
CAPACITY | 8 L |
PURIFICATION RATE | 15 L/hr |
POWER USE | 45 W @ 230V |
FILTER CARTRIDGES | Sediment Filter, Activated Carbon Filter, Germicidal UV, Silver Impregnated Taste Enhancer, RO membrane |
PURIFICATION TECHNOLOGY | RO UV with the Mineralz cartridge & Revitalizer |
FEATURES:
1. Apart from its 3-way mounting design, the water purifier uses 7 stage ultra purification mechanism that is a combination of RO and UV that guarantees to provide 100% pure water for drinking. This double purification technology of RO & UV helps to arrest bacteria, viruses & undesirable salts from the water.
2. Undoubtedly, the RO processes to remove the minerals altogether making water less of required minerals. Well, the Mineralz cartridge in the system not only replenishes the water with desirable natural minerals but also helps to create a balance of the pH of water in a suitable range.
3. In addition, it becomes necessary that the water that is provided is naturally able to hydrate the body with proper mineral absorption. As a result, for this, the Revitalizer feature biologically constructs the water molecule to enhance the same.
4. Certainly, talking about its durability this best water purifier in India from Havells includes an iProtect monitoring feature that keeps the continuous check on the purification process.
5. Advanced voltage fluctuation protects the water purifier from voltage dips on the power supply. Basically, it trips the system when the voltage rises above 330V or goes below 170V.
6. Altogether some other features include some smart alerts like Self-diagnostic, purification & tank full, UV, SV or pump failure.
8. Detailing about its build, this water purifier comes with ABS food-grade plastic build material & can be easily installed at the wall corner, tabletop, or even on a straight wall. The easy to remove & clean water storage tank has 8 liters of capacity with dust & contaminant ingress protection. For maintaining hygiene & smooth flow with no splash it has a unique soft-touch faucet along with 4W UV light.
WARRANTY:
1 year warranty for this best water purifier in India from Havells.
PROS | CONS |
1. Mineralz Cartridge & Revitalizer | 1. Wastage of water from RO can sometimes be large. |
2. iProtect Monitoring feature | |
3. Unique 3-way mounting |
Kent Ace Mineral 7-Liter RO+UV+UF Water Purifier

Particularly, in India when you think of buying a water purifier from a trusted brand, Kent is the name that pops up first. Certainly, with the highest-selling water purifiers in its catalog Kent brings in the best water purifier in India that endorses basic functionalities in a most advanced and sophisticated manner along with economic pricing. Well, all of this goes true for the Kent Max.
CAPACITY | 7 L |
PURIFICATION RATE | 15 L/hr |
POWER USE | 60 W @ 100-250V |
FILTER CARTRIDGES | Sediment, Carbon Block Filter, UF & Post Carbon |
MEMBRANE TYPE | Thin Film Composite RO |
MAX. DUTY CYCLE | 75 L/Day |
PURIFICATION TECHNOLOGY | RO UV/UF & TDS CONTROLLER |
FEATURES:
1. Basically, this water purifier from Kent works in harmony with the RO UV & UF mechanism to enhance the quality of water irrespective from its source be it from the tap, bore well, or municipality water as well.
2. The UV & UF filtration aspect controls and removes viruses & bacteria. Whereas, the RO membrane helps to arrest the heavy metals like lead, arsenic, or mercury from the water. Thereby, making it extremely safe for drinking.
3. Additionally, talking about enhancing the health aspect of water which is lost due to the removal of various essential minerals during purification. Well, the Mineral RO technology with the TDS controller helps to adjust & retain the required minerals like Calcium, Magnesium & Sodium essential for a healthy body.
4. Certainly, the entire purification operation is computer-controlled that enables extreme flexibility to the user. This alerts the user with Filter change alarm or UV fail alarm to mark the requirement for issues such as filter replacement or UV light failure.
5. Moreover, talking about its build quality the purifier is made up of ABS Food grade plastic with a 7-liter storage tank, having the capacity of purifying 15 liters water per hour which can be easily wall-mounted. Also, it has 11 W UV for improving the purifying operation.
WARRANTY:
1 Year Warranty + 3 Years No Service Charge on this best water purifier in India.
PROS | CONS |
1. 7 Stage purification | 1. 100% of the water may not be RO purified |
2. RO Mineral technology with TDS Control | |
3. Functional alarms & indicators |
Eureka Forbes Aquasure Smart Plus 6-liters RO + UV + MTDS Water Purifier

Undeniably, Eureka Forbes has been serving the Indian water purifier market for a long time and has made its name gradually to the list of best water purifier brand in India. Aquaguard has been a common household heard name when it comes to discussing for the best water purifier in India. Altogether, with unique design and features, the Aquasure Smart Plus from Eureka Forbes is sure to catch your eyes when searching for some best water purifiers in India for 6-liter capacity.
CAPACITY | 6 L |
POWER USE | 45 W @ 150-270 V |
FILTER CARTRIDGES | Clarity Cartridge (external pre-filter), Chemi Block filtration, Membrane Life Enhancer, RO Membrane, Taste Enhancer Cartridge filtration, and UV Disinfection Chamber |
MEMBRANE TYPE | Thin Film Composite RO |
PURIFICATION TECHNOLOGY | RO & UV with TDS Regulator |
FEATURES:
1. Certainly, quite reliable in its purification process with 6 stage filtration mechanism that can handle well water of TDS ranging from 200 to 2000 ppm along with different metals & organic matter as well.
2. In addition, it comes with a Clarity Cartridge which is an external sediment filter used to block away from the dust, sand, cyst, or silt particles coming in with the water.
3. Also, the TDS Regulator helps to maintain the pH alkalinity of the water by helping to adjust the TDS level of the water as per your requirement.
4. Additionally, the front panel is smartly designed with the indicators that change color in order to alarm you about the purification process on, tank full, low incoming water pressure, no water supply, error with the purifier so that you can call the services to eliminate the issue.
5. Undeniably, voltage fluctuations are a common scenario on the power grid and any off-limit fluctuation can cause high damage to the purifier internals. As a result, this water purifier comes with a smart voltage fluctuation guard to bear any changes between 150 V to 270 V effectively.
6. Not to mention, the design of its shiny black colored body is quite compact & looks lightweight. It includes a storage capacity of 6 liters and can be easily wall-mounted or placed over tale top.
7. In particular, it thinks about saving the power as well, by switching off the purifier once the tank gets full. Thus, it ensures smart working while conserving energy.
WARRANTY:
It includes 1 year on this best water purifier in India from Aquaguard.
PROS | CONS |
1. RO & UV technology, with 6000 liters cartridge life | 1. It fails on low inlet water pressure. |
2. TDS regulator for 200 to 2000 ppm TDS water. | 2. Quite a sufficient water wastage in RO processing. |
3. Energy-saving by switching off once tank gets full. |
Faber Galaxy Plus RO+UV+UF+MAT, 9 Liters, 8 Stage Mineral Water Purifier

Well, Faber is quite a rapidly growing name in the Indian household appliance sector. Faber has put a lot of hard work in the sophistication of water purifiers. Smart features, elegant design, optimum results and pocket friendly these are the features one easily get when looking at Faber Galaxy Plus, thus making it one of the best water purifier in India.
CAPACITY | 9 L |
PURIFICATION RATE | 13.5 L/hr |
POWER USE | 36 W @ 160-260 V |
FILTER CARTRIDGES | External Sediment Filter (20 microns), Pre-Carbon Filter, Sediment Filter (5 microns), RO Membrane, Post Carbon Filter/MAT Filter, UF Membrane, and UV Filter. |
MEMBRANE TYPE | Thin Filmtech Composite RO |
PURIFICATION TECHNOLOGY | RO UV UF & MAT |
FEATURES:
1. Basically, this water purifier includes an 8 stage purification mechanism having a purification rate of 13.5 liters per hour, in order to keep the water from any available source clean & safe for drinking.
2. Firstly, the additional external filter cartridge of 20 microns greatly helps in arresting sand, silt, or dirt particles in the water and acts as a sacrificial filter cartridge for purification.
3. Secondly, the Filmtech designed RO membrane filter used is capable of handling the water up to 2500 ppm which is quite high in the limit when compared with other purifiers. This helps to catch up heavy metals like lead, arsenic, or even other salts as well.
4. Lastly, the UF membrane & UV light helps to arrest & disinfect the water from waterborne bacteria & viruses.
5. In addition, it has MAT Mineral Added Technology that helps to balance out & replenish the water with vital minerals that are lost during the RO purification process. This in short helps to keep the health & taste factor of the water in check.
6. Particularly, copper provides an added health benefit when added in water, which is truly established in Ayurveda as well as Science. As a result, the purifier comes with the Copper Guard technology that helps in removing fouling compounds.
7. All in all, adding about its design it looks elegant and comes with a 9-liter capacity storage tank made of ABS food-grade plastic. It includes perfectly centered placed indicators for tank full, purification on/off, and low pressure.
WARRANTY:
It includes a 1 Year Warranty on the best water purifier in India from Faber.
PROS | CONS |
1. RO UV & UF protection with Mineral Added Technology. | 1. It doesn’t include an alarm for filter change signals. |
2. High capacity RO membrane to hold 2500ppm TDS water. |
HUL Pureit Marvella Sleek Mineral RO+UV+MF+MP Water Purifier

Needless to say, some of the best water purifier in India come from the HUL brand. Specifically, HUL is one of the renowned names in consumer durable accessories of which water purifier is its leading product. Great features at reasonable pricing come true for the HUL Pureit Marvella series making it one of the best water purifier in India.
CAPACITY | 8 L |
PURIFICATION RATE | 20 L/hr |
POWER USE | 55 W @ 100-240V |
FILTER CARTRIDGES | Pre-Sediment Filter, Pre-RO Carbon Filter, Mini Filter, Reverse Osmosis Membrane, Micro-Filtration Membrane, UV and Post-RO Carbon Filter |
MEMBRANE TYPE | Thin-film composite spiral wound |
PURIFICATION TECHNOLOGY | RO UV MF MP |
FEATURES:
1. Basically, this water purifier comes with 7 stage filtration mechanism which includes RO+UV+MP+MF which is capable of purifying water from ground resources as well as tap water that has TDS up to 2000 ppm.
2. The filter cartridge which is capable of filtering for 6000 hours, meets toughest safety standards by arresting 1 Cr virus & 10 Cr bacteria from 1-liter water & other contaminants as well as heavy metals making it completely safe for drinking purposes.
3. Some purifiers tend to mix some parts of incoming water with the RO water in their process. However, this best water purifier in India from HUL guarantees complete passage of incoming water from the RO membrane.
4. Necessarily, with removing out of minerals & TDS during RO purification the Mineral Cartridge with the TDS modulator in Germ Kill Kit solves the issues. Thus, thereby aiding the lost required and essential minerals like Calcium & Magnesium back in the water.
4. Additionally, talking about the hassle-free experience, the Advance Alert feature alerts you 15 days before the filter assembly of Germ Kill Kit is about to expiries and Automatically shuts the water supply to the water purifier when the Germ Kill Kit expires.
5. All in all, with an 8-liter capacity tank it has a high purification speed of 20 liters/hour. The body is made up of engineered high food-grade plastic.
WARRANTY:
1-year domestic warranty provided by the manufacturer on this best water purifier in India from date of purchase.
PROS | CONS |
1. 7 Stage purification with TDS Controller | 1. High yearly maintenance cost. |
2. Mineral Cartridge | |
3. Advanced Alert mechanism |
Livpure Glo 7-liter RO + UV + Mineralizer Water Purifier

Comparatively, Livpure is a new brand in the field of water purifiers but is certainly gaining progress because of its budget-friendly best water purifier in India. Altogether, with best features at reasonable pricing, Livpure Glo is technically one of the best water purifier in India suited for ideal Indian water conditions that strive to get optimum purified output.
CAPACITY | 7 L |
PURIFICATION RATE | 12 L/hr |
FILTER CARTRIDGES | Sediment filter, pre-activated carbon filter cum adsorber, RO membrane, UV disinfection column, silver impregnated post carbon filter, mineral cartridge |
MEMBRANE TYPE | Thin Film Composite RO |
MAX. DUTY CYCLE | 75 L/Day |
PURIFICATION TECHNOLOGY | RO UV & Mineralizer CONTROLLER |
FEATURES:
1. Certainly, the assembly of this water purifier from Livpure enhances your experience towards safe, clean, and hygienic drinking water with the unanimous working of RO & UV technology.
2. Basically, after the TDS is brought down by eliminating contaminants from the water at the RO Section the remaining organic compound is easily arrested at the UV section & Silver Impregnated Post Carbon Filter. As a result, 100% safe and clean drinking water is obtained no matter the input source of water would be from groundwater or municipality as well.
3. With the purification rate of 12 liters per hour, it can handle water with the TDS of up to 1500 ppm easily.
4. Along with its 6 stage filtration process, it comes with Mineralizer that revitalizes the water with the essential minerals which were lost during the RO treatment.
5. Undeniably, the water purifier comes in sleek design & is made of food-grade plastic with 7-liter water storage capacity that can be easily wall mounted.
6. Talking about its smart aspect, it has indicators for keeping in check regarding the Process ON, Purification On & Tank level Full. Additionally, it has the feature to switch OFF the supply when the tank gets full to conserve overflowing water.
WARRANTY:
It includes a 1 Year Warranty on the product.
PROS | CONS |
1. RO & UV protection. | 1. Issues regarding after-sales services. |
2. Mineralizer for replenishing water with vital minerals. |
Kent Maxx 7-liters UV + UF Water Purifier

Undoubtedly, Kent water purifiers are one of the most preferred and trusted water purifier between Indian families. Apart from the regular RO water purifiers Kent is also widely established in manufacturing Gravity based fine filtration purifiers that are of great use where the TDS of the water is quite low. Surprisingly, the Kent Maxx is one such wonder that stands true as one of the best water purifier in India for 7 liters storage without RO technology.
CAPACITY | 7 L |
PURIFICATION RATE | 60 L/hr |
FILTER CARTRIDGES | Sediment filter, activated carbon filter & UF membrane |
MEMBRANE TYPE | Thin Film Composite RO |
MAX. DUTY CYCLE | 120 L/Day |
PURIFICATION TECHNOLOGY | UV UF Technology |
FEATURES:
1. In particular, this water purifier from Kent uses UV & UF technology to purify the water at a much higher purification rate. This double purification aspect clears out bacteria, viruses, or cysts from the water.
2. Since it doesn’t include the RO system in it, this purifier is highly preferred in the areas where the TDS levels of water are under considerable limits. This helps in good savings as well.
3. Also, the entire process is computer controlled with particular alarms for UV failure or filter replacement in order to keep the purification process on-going and hassle-free.
4. Also, the in-built SMPS protection gear keeps the water purifier safe from undesirable & uncontrolled voltage fluctuations that can damage the system.
5. All in all, talking about its build quality, it is made up of good quality food grade plastic. It consists of 7 liters detachable storage tank with leakage proof fittings & components which can be effectively and easily removed for cleaning purpose.
6. Not to mention, the 11 W UV lamp adds up the benefit for better purification results. Whereas, the Activated Carbon filter cartridge restricts and removes bad taste & odor from the water.
WARRANTY:
It includes a 1 Year Warranty on this non RO best water purifier in India from Kent.
PROS | CONS |
1. UV & UF protection & higher purifying rate. | 1. Not suitable for groundwater use. |
2. The best option for water having low TDS. |
Blue Star Aristo RO+UV AR4BLAM01 7-Litre Water Purifier

Basically, Blue Star is quite a known name when we talk about air conditioning solutions. Certainly, with its zeal towards innovation and quality, it has extended its domain in the sector of water purifiers as well. All in all, stylishly designed and technically equipped with RO & UV features the Blue Star Aristo is sure one of the best water purifier in India for residential purposes.
CAPACITY | 7 L |
PURIFICATION RATE | 12 L/hr |
POWER USE | 36 W @ 220-240 V |
FILTER CARTRIDGES | Pre-Filter, Pre-Carbon Filter, Sediment Filter, RO Membrane, Post-Carbon Filter, and UV Lamp. |
MEMBRANE TYPE | Thin Film Composite RO |
PURIFICATION TECHNOLOGY | RO UV & ATB Control |
FEATURES:
1. Particularly, this stylish looking water purifier includes 6 stages of filtration mechanism that have double-layered RO and UV protection aspects that control and arrest the unwanted salts, minerals, bacteria & viruses out from the water making it safe and hygienic for drinking.
2. The double-layered RO membrane & Copper Impregnated Activated Carbon cartridge is the added benefit for the cause of purification up to 96% TDS removal and removing bad smell or odor as well as volatile organic compounds from the water.
3. Besides, to enhance your experience, it includes ATB Aqua Taste Booster that uses calcite media for maintaining the pH of the water to its optimum level suitable for drinking.
4. Talking about its alarm features it includes Tank full indicator to protect overflowing, low inlet pressure alarm, purification on-going indication, and UV light fail or fault alarm as well.
5. Certainly, the build is elegant which comes with a 7-liter water holding capacity tank. Additionally, it includes the Child Lock feature that disables the dispensing of water so that your younger one doesn’t waste the water unnecessarily.
WARRANTY:
It includes a 1 Year Warranty.
PROS | CONS |
1. 6 Stage purification with UV protection. | 1. For every liter of water purified, 650 ml of water is thrown out. |
2. Aqua Taste Booster. | 2. Fails at low inlet pressure. |
3. Child lock feature. |
HUL Pureit Ultima Mineral RO + UV + MF 10 liters Water Purifier

Least to say, with multiple nominations & winnings at the Golden Peacock Innovative Product/Service Award, HUL Pureit Ultima as a product answers to the water purification need of higher capacity with technologically advanced processes and guarantees best outcome at a bit higher price range. Not to say, Pureit is one of the best know water purifier brand in India that has brought some best water purifier in India like the HUL Pureit Ultima.
CAPACITY | 10 L |
PURIFICATION RATE | 28/ L/hr |
POWER USE | 60 W @ 100-240 V |
FILTER CARTRIDGES | PP Melt Blown Pre-Sediment Filter, Pre-RO Carbon Filter, Post-Carbon Sediment Filter, Reverse Osmosis Membrane, UV Chamber, Post-RO Carbon Filter and Micro Filtration (MF) Membrane |
MEMBRANE TYPE | Thin Film Composite RO |
PURIFICATION TECHNOLOGY | RO UV & UF |
FEATURES:
1. Undeniably, the combination of RO plus UV has a tremendous effect in arresting the contaminants, bacteria, viruses as well as heavy metals out from the water irrespective it is from the groundwater or municipality water with the TDS as high as 2000 ppm. This is achieved easily with its 7 stage filtration process that removes about 10 crore bacteria & 1 crore viruses from every liter of water.
2. Additionally, with its high purification rate of 28 liters per hour & sensing the water purity 5000 times in a second, it also ensures that all the water incoming passes through the RO membrane for filtration, and thus there is no mixing of normal supplied water with a portion of purified water.
3. Since, a large amount of water is drained outside during the RO purification, this water purifier works to save and conserve the water highly while saving about 25% more water than any other regular water purifier.
4. Besides, it includes a mineral cartridge in it, to replenish the essential vital minerals that were lost during the purification process. Hence, thereby maintaining the healthiness & proper standards of drinking water with its natural known taste.
5. Talking about its smart aspect of Double Purity Lock, which ensures the maximum purity of the water, it creates an Advance Alarm 15 days before the expiry of the Germkill filters & immediately Shut OFF the system if the filter isn’t replaced timely on the indication.
6. Altogether, the water purifier is elegantly designed to enhance the aura of the kitchen. It comes with a soft-touch water dispensing button & has a storage capacity of 10 liters.
7. In particular, an electronic panel indicates the quality of water and even shows the life of the Germkill Kit digitally to help you keep updated about its optimum working. Not to mention, the Neon Glowing belt that lights up when used adds up to its looks decently.
WARRANTY:
It includes 1 year on the product where Consumables and additional accessories are not covered in the warranty.
PROS | CONS |
1. Highly advanced with RO UV MF technology. | 1. High yearly maintenance cost. |
2. High purification rate & storage capacity. | |
3. Double Purity Lock for 100% safe drinking water. |
BUYING GUIDE FOR BEST WATER PURIFIER IN INDIA:

Least to say, water that appears as visibly clean may contain several dissolved impurities in it including bacteria & viruses apart from salts & heavy metals with sand or mud. Undoubtedly, water pollution is a major concern & is growing at light speed these days in name of revolution.
Specifically, modern & best water purifiers in India include technologies like Reverse Osmosis (RO), Ultraviolet light (UV) & Ultra Filter or Micro Filter that help widely in the purification of water from visible to invisible impurities. But a deeper context related to a few other aspects needs to be understood before making your selection. Undoubtedly, this buying guide helps you navigate through them comprehensively.
SOURCE OF WATER:
Well, it has to be due noted that not all the water that is made available is suitable for human consumption & drinking purpose. As a result, it becomes necessary for us to understand the sources of water that are available. Broadly water can be Surface water or Groundwater.
Basically, surface water is the one that is available above on the surface such as from lakes, rivers whose source is from rain or snow melting at mountain caps. On the other hand, groundwater is one that comes from beneath the soil or rocks that remains accumulated. Specifically, only 3% of the total water available on earth is certified as freshwater that can be utilized for consumption. Certainly, groundwater is one major source that is heavily harvested for drinking water purposes widely.
Needless to say, technologies are constantly been on research like desalination of seawater that contains a high amount of salt to make it available for human consumption.
CONTAMINATION OF WATER
Undeniably, this water from their source while reaching to your home on their home meet with several contaminants such as sand, silt, TDS including salts of potassium, nitrates, magnesium, chlorine, as well as heavy metals like lead, arsenic or mercury a big thanks to the contribution by human & industrial waste that find themselves in this water sources, making it undesirable for use.
To be speaking of, mud, sand or silts are the visible impurities. Chlorine is one chemical that the municipalities use to disinfect the water and excessive of it beyond prescribed levels makes is damaging for the human body. Groundwater & water from the river or lake is good ground for breeding of organic impurities like viruses, cysts, or bacteria. On the other hand, TDS minerals are one common fundamental found in water along with other impurities like arsenic that is used widely in fertilizers thereby deteriorating the quality of water.

Understanding these impurities present in the different sources of water, basically, will make us realize the importance & purpose of water purifiers in making the water clean & safe for drinking.
TOTAL DISSOLVED SALTS (TDS)
Particularly, the word TDS is making quite around in every other paragraph. What exactly is TDS?
Well, TDS measured in mg/L or parts per million (PPM) denotes the concentration of dissolved salts both organic & inorganic present in water. These are so small they can easily pass through the cloth or ordinary filter. Needless to say, there are salts like calcium, magnesium, or sodium that are included under TDS but are essential for better growth of the human body. As a result, a particular concentration is always recommended for safe human consumption. On the other hand, salts of minerals like lead or arsenic even in a small amount can cause substantial damage to the human body.

The acceptable limits of TDS in water can be categorized as:
Below 300 ppm | Excellent for use |
Between 300 to 600 ppm | Better for human use |
Between 600 to 900 ppm | Fair & considerable |
From 900 to 1200 ppm | Low level of TDS |
Above 1200 ppm | Abrupt & unacceptable level of TDS |
Certainly, according to the BIS Standard of 10500-2012, 500 mg/L TDS level is quite desirable for human use. However, it may happen water of 500 mg/L may even contain a higher amount of arsenic, cadmium, or lead concentration in it, which doesn’t make it palatable & act as slow poison.
On one hand, TDS of water can be checked easily at home with the Digital TDS meter available online. But knowing individual constituents of TDS in water is important for better & healthy consumption.

PURIFICATION TECHNOLOGIES:
Precisely, the water pollution in India is at an alarming range and with all other aspects discussed above, water purification becomes a must during these days. Certainly, some advanced technologies have been devised by different brands to overcome these issues. The 3 major purification techniques include Reverse Osmosis (RO), Ultraviolet light (UV) & Ultra Filter which have their own advantages & disadvantages. Apart from them, there are other filter cartridges as well that are present in the purification mechanism for optimum output.
SEDIMENT FILTER:
Generally, these are to arrest the visible impurities like sand, silt present in the water. Water made available from the municipality is usually clear and thus it is not necessarily needed in these cases, however, groundwater has multiple visible floating impurities. Particularly, they are placed at the outer body of the main mechanism to help increase the durability & life of the RO membrane.
PRE & POST ACTIVATED CARBON FILTER:
Carbon is a better absorber in terms of filter, it widely arrests the organic volatile compound from water thereby removing the bad odor from the water. Generally, the pre ones are installed ahead of the RO membrane whereas the post one is installed after the RO at the last stage. In particular, it tends to enhance the taste of water while removing the odor.
REVERSE OSMOSIS:
Certainly, talking in the science aspect, water that is pure from impurities and has a low concentration of it can easily move towards water having higher concentration through a semi-permeable membrane. However, the reverse of this is to be applied while purifying the water, which needs the water to be pressurized against the semi-permeable membrane. Altogether, this is reverse osmosis.
And, the semi-permeable membrane being so fine with small pores easily arrest the TDS salts, heavy minerals causing the wastewater to drain off and pure water to pass ahead in the purification process. Generally, speaking a good amount of water gets wasted as a drain during RO, while some water purifiers have adjustments for collecting & using this water for different household purposes.

ULTRAVIOLET PROTECTION:
All in all, the ultraviolet chamber uses an ultraviolet radiating light that helps to diminish the slippage bacteria & viruses from the RO process. Needless to say, it helps to kill 99.99% of organic pathogen impurities from the water making it extremely safe for drinking purposes.
ULTRA FILTER:
Subsequently, this is the filtration process that uses a 0.001-micron pore filter and works without electricity usage. it helps to trap any residual contaminant that slips after the RO purification step.
All in all, when water is contaminated with heavy metals it is advisable to opt for RO purifier, as it proves optimum for arresting it. However, if except for TDS readings & visible impurities, you aren’t aware of the existing other impurities and are in doubt it is best said to go for Universal water purifier that houses RO, UV & UF altogether to give optimum purified output.
TDS CONTROLLER vs MINERALIZER:
Eventually, the water that passes through the RO membrane becomes pure & fit for drinking. However, while controlling the TDS of the water, the RO membrane arrests even the vital minerals such as salts of calcium, sodium & magnesium from the water which is important for the human body.
In order to tackle this issue, and replenish water with the essential minerals TDS Controller & Mineralizer are two of the technologies that are used in the best water purifier in India.
Basically, in TDS Controller a part of the water is bypassed before the RO membrane and is purified in the UV & UF filtration and later mixed with the pure water coming from the RO filter to maintain the concentration limit of these vitals minerals.
On the other hand, with the TDS controller, there is a small chance of contaminating the RO purified water by bypassing it. As a result, to overcome this the Mineralizer technology comes in handy. In particular, it releases these essential minerals & replenishes the water the vital mineral content that is required to keep the water healthy for consumption.
PURIFYING RATE OR CAPACITY:
Particularly, this one of the most neglected aspects during the buying of a water purifier. Well, depending on the family consumption pattern & requirements, it is a must you should check for the purification rate as it helps to keep your drinking needs in check.
Mostly specified in liters per hour, a good RO purifier can help purify 12-15 liters of water every hour, which is best suited & ideal for the majority of homes. In addition, some high-end models can have a purification capacity of 20 liters or more per hour.
TANK TYPE & STORAGE CAPACITY:
Generally, water purifiers come with the storage capacity ranging from low as 6 liters to 10 liters and even higher. However, keeping the Indian household consumption in regards, a better option would be to go for 7 liters capacity to 9 liters capacity on average. On the other hand, if the requirements extend beyond this then you can even opt for 10 liters capacity. Also, 6 liters capacity tank proves to be a good option for bachelor person.
Additionally, the purified water which is stored in these tanks should be kept in the observation that it doesn’t get contaminated with external impurities and tank material as well. This tank material is made from stainless steel or ABS food-grade plastic that ensures perfect sealing, purity & tank durability as well.
These purifiers can either be mounted on mounted or placed on counter or table-top, depending on the available space.
INDICATORS, ALARMS & CHILD LOCK:
Undeniably, an indicator or alarm can go a long way in improving the life and processing of the water purifier. Apart from standard indications of Purification ON or Tank Full some alarms like UV lamp fault/ failure or filter choking/clogging & need of replacement can help the purifier perform well in dispensing the clean desired water for consumption purpose.
Basically, these alarms not only help you but in turn improves the life of the water purifier in whole as well.
Whereas, features like Child Lock helps in prevention from accidental water wastage at home.
CONCLUSION:
Accordingly, to end, we can summarize that different sources of water have different sorts of impurities in it that have to be eliminated for making it palatable. Above, we have reviewed the top 10 best water purifier in India along with the addition of RO water purifier buying guide so that you can make the best choice possible with the proper knowledge about them.
In case of doubt, the best choice to go for is the one that has RO+UV+UF filtration mechanism built in it, as it stands to be the best water purifier in India among all. If asked which is the best water purifier brand in India Kent, Havells, HUL & Aquaguard are some of the most trusted brands whereas Livpure & Faber are slowly gaining the progress
Additionally, if you have any queries you can feel free to post them in comment box we would love to address them asap or check the FAQs on Water Purifiers.
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