Top 10 Best Water Purifier in India – Reviews & Comparisons

Naturally, water from rivers, lakes and ponds have a much lower proportion of TDS than water supplied from wells and bore wells. However, there are lots of rivers and lakes located near factories and industries that have much higher TDS due to chemical and other impurities.

This drastically changes the formation of water and disturbs its core properties. This leads to a bifurcation of water into 2 types: Hard water and soft water.

Hard Water and Soft Water

There are quite high chances of water supplied from underground and tankers to be hard water. Hard water contains a pretty high percentage of calcium, heavy metals, magnesium, fluorides, and arsenic. This makes it quite unhealthy to consume. It is unsuitable for bathing and cleaning purposes as well.

Whereas, water supplied from rivers, lakes, rainwater harvesting systems and municipality distribution system have quite low or no percentage of these solutes. While they need purification too however they do not contain hard water solutes that make them un-consumable.  

Now that we have looked at the type of impurities present in the water it is time that we dive into different types of technologies that are implemented to filter them.

Purification technologies

1. RO Purification

Reverse Osmosis technology has changed the face of water purification. Traditionally, the water was made to flow from low TDS concentration area to high TDS concentration through a membrane (about 0.0001 microns) that filtered out the impurities.

However, RO is the opposite of this process. It pushes the water from higher TDS level to lower TDS level with the application of external pressure. This reverses the natural water flow.

So, water with high TDS is pumped up in the RO chamber thereby passing its water molecules through the membrane thereby filtering out the impurities behind.

After this, all the dissolved solids and impurities are discharged through a dedicated outlet.

This is a verified purification technique suitable for water with high TDS. It is thoroughly tested and showed incredible results bringing down the TDS level of the input water considerably low.

There are some drawback as well that you should know of:

2. Ultrafiltration

Ultrafiltration makes use of semi-permeable membrane just like RO. However, what sets them really apart is the size of the membrane which is much larger than what RO has. This means that it cannot filter out minute impurities.

One advantage it has over RO is that it works without electric supply. Water passes through the membrane under the influence of gravitational force.

Another advantage is that it does not hold back any water so there is practically no water wastage.

So, as mentioned before, due to its inability to filter out minute impurities it is absolutely unsuitable for the filtration of high TDS water.

3. Ultraviolet Purification

This technology, as the name suggests, makes use of UV rays for water purification. This purifier makes use of intense UV rays which exterminates the disease-causing bacteria and viruses.

This is a highly effective technique for reducing the chances of water-borne diseases. However, there are some chemicals and other dissolved impurities that cannot be dealt with by these purifiers.

Today, in the market you will find most of the UV purifiers coupled with additional pre-sedimentary filters to filter off the sand and other undissolved impurities.

So, these purifiers are definitely not suited for high TDS water. However, within its capacity, its operation is excellent. Hence, it best opts for treatment of low TDS water.

4. Gravity based filters

These filter some of the most simplistic filters available in the market that works on pure mechanics. They are usually coupled with sediment or sediment + activated carbon filters that work in coherence and remove undissolved impurities like sand, mud, minute stones.

Along with them, they also treat chemicals and microorganisms.

They are extremely small in size and can be easily fitted on a tap or faucet. There is advanced version of these filters available in the market that has an extra storage tank that filters out and stores the impurities.

These purifiers obviously have their limitations so they are not advisable for the treatment of high TDS water and others which are contaminated with biological hazards.

Which technology should be preferred?

Just like how Maggi became synonymous with noodles RO has become tied up tightly with purifiers.

Hence, there has been an overall climate of thought of RO water purifiers being the default purifiers available in the market.

However, it is important to know that RO is required only for high TDS water. There is a wide range of water purifiers available in the market made specifically for different levels of TDS.

So, it is important to know that RO purifiers should only opt if the TDS limit of the water exceeds 500ppm as claimed by The Bureau of Indian Standards.

If the TDS is below 500 ppm, you should be checking other parameters such as the colour, smell and taste.

Most of the water purifiers in the market make use of 3 major technologies: RO, UV and UF. It is a waste of time to get into these technicalities. You can refer to the chart below, that directly shows the right technology suited for particular TDS water.

For hard water with a high level of biological contamination, it is best advised to opt for a RO+UV or RO+UV+UF water purifier.

Whereas, for soft water with a higher concentration of biological contamination then you must go for a UV or UF+UV water purifier.

Basically, UF filter is always used in combination with other purification technologies as what it best water filter in india is removes the solid impurities from water.

So, based on the chart you get a clear idea of what you must look for based on the overall quality of the water.

You must have a precise understanding of the filter kit as well to know what kind of impurities will be treated by what kind of filters.

Elements of RO Purifier

Water wastage and how to act against it

As mentioned above that for every 1 litre of purified 3 litres of water is wasted. This is a shocking truth. However, you must step up and ensure that this wastage is prevented or reduced at the least.

If the TDS of the purified water is low then it is safe to say that your water purifier is producing more wastewater. Low TDS is not merely an indication of the bad health of water but also shows that a lot of water is being wasted. So, you can adjust the TDS and increase it with the help of TDS knob.

FAQ

1. Which is the best water purifier to buy?

There is no particular best water purifier in India that treats all kinds of water. This solely depends on the quality of water that needs to be treated. In this we define which water purifier is best to buy.

If the supplied water has TDS level above 500 ppm then KENT New Grand 8-Litres, AO Smith Z9 and Eureka Forbes Aquasure are some of the highly regarded water purifiers in the market. And KENT Gold+ 20-litres Gravity Based Water Purifier is ideal for treating water that is below 500 ppm.

2. Which purifier is best for Bore-well water?

Ideally, a simple UF + UV based purifier will work for bore well water as it does not have much dissolved organic and chemical impurities. Bore-well water has plenty of un-dissolved impurities, added salt and other compounds that might be added due to poor quality pipes. 

Ordinarily, bore well water is not influenced by chemical compounds so their TDS concentration is considerably low. Preferably, KENT Gold+ 20-litres Gravity Based Water Purifier review is the perfect choice for treatment of municipal supplied water and water from bore wells.

3. Are water purifiers safe?

Absolutely! They are thoroughly tested under all circumstances to ensure the fine quality of sterilization. However, it is crucial to ensure time-to-time maintenance of the system. As it deals constantly with impurities and organic wastes that come with water, routine maintenance is really important to ensure good hygiene.

4. What is the difference between RO UV and UF?

5. Which is better RO or UV?

RO is considered to be much more prolific than UV filters. In UV technology, water is passed through a tube and exposed to UV radiations that completely exterminate all the germs and viruses. However, it does filter out the dead bacteria and germs that are present in the water that will be eventually consumed.

Whereas best RO water purifier thoroughly distills the water and passes it through series of filters ensuring that all the impurities are filtered out before storing them in the tank for consumption.

6. Which filter is best for drinking water?

This depends upon the source from where you get the water. If you get water from lakes, bore wells or municipal pipes than a simple UV and UF filter will suffice. In some cases, if the TDS is below 200ppm than a simple gravity-based filter such as KENT Gold+ 20-litres Gravity Based Water Purifier will be perfectly suitable.

Whereas, in case of high TDS water, Eureka Forbes Aquasure, Livpure Pep Star and Blue Star Aristo are some of the best water purifier in Chennai that will reduce the TDS level of the water considerably.

7. Does RO water kill bacteria?

No, RO does not kill bacteria. It filters them out effectively. Ideally, 90 % of the bacteria are strained out much in RO purification.  This is mainly because the input water is made to pass through a fine membrane that filters out all the impurities and bacteria.

They are not exterminated the way UV purifiers do but it best filters them out.

8. Which brand water purifier is best?

Kent, Eureka and Blue star are 3 of the most reputed brands in India today. Mainly because of their consistency in delivering the best products they have a considerably huge consumer base. They employ some of the latest cutting-edge technology to ensure their products deliver the best performance.

Being thoroughly tested under all circumstances and considering their general acceptance by the masses is enough to tell us that the water purifiers of these brands certainly stand out from the rest of the ones in the market.

9. Which water purifier is good for health?

RO purifiers and UV purifiers guarantee 99.98% of water sterilization. Most of the purifiers available today implement RO, UV and UF technology that helps in reducing the concentration of impurities considerably guaranteeing you healthy water for consumption.

HUL Pureit Classic RO + UV 6 Stage water purifier employs 6 stages of the water purification process. Along with this it also has a UV filter that exterminates all the disease-causing viruses and bacteria making high TDS water absolutely drinkable.

10. Which water purifier is better for municipal water?

Municipal water typically has TDS lower than 500 ppm and practically no chemical impurities. However, if the water is supplied through a poor pipe than there are chances of impurities such as salt, mud and sand to get added to water.

KENT Gold+ 20-litres Best Gravity Based Water Purifier is a reputed water purifier that treats low TDS water and delivers pure drinkable water.

Here’s the list of Top 10 Best Water Purifier in India: