How To Select Best Water Purifier For Your Home

Regardless of how clean your drinking water looks, there's absolutely not any guarantee it's pure and germ-free. It could have microscopic pathogens which cause diseases, new age contaminants like lead and arsenic or a rather large degree of TDS (Total Dissolved Salts).

Across 8 major cities in India, water- borne diseases like cholera, jaundice and typhoid accounted for 77 percent percent of all the ailments in India. The poll also threw light on the fact that the TDS levels are far above the permissible level in several areas in India, including cities like Mumbai, Delhi, Bangalore.

You might believe that massaging your water until you drink it's good enough. However, this is far from the truth. Boiling only provides protection from microbial contamination brought on by bacteria, virus, viruses, etc. it does not eliminate dangerous chemicals/new age contaminants like lead, pesticides and physical impurities such as sand, dust, rust, etc..

So what is it that you can do to ensure that the quality of drinking water that your household gets is safe and pure?

Many families are turning to water purifiers to ensure that their drinking water is safe and healthy. But, together with the market flooded with a plethora of brands how do you understand what water purifier to choose?

A little bit of research is all you will need before you purchase your water purifier. The first and foremost thing you want to know is what your water condition is. As soon as you understand this you know what kind of water purifier you need to buy. Here is what you need to know about the various technologies available in the market.

Reverse Osmosis

If you reside in a region where you get tough water then RO water purifiers are ideal. If the TDS (Total Dissolved Salt) levels in your water exceed the permissible limit then it poses a significant threat to your health. RO water purifiers decrease the TDS content in your water to a permissible level and should be used only if the level of Total Dissolved Salts in water is quite significant.

RO (Reverse Osmosis) works by applying high pressure on the water based on the degree of salt content; it's then forced through a 0.0001 micron, semi-permeable membrane. RO enables cross flow filtration of water, in which the contaminants are caught from the membrane. The water that is bottled goes one way and the clean water goes another way. The cross filtration permits the impure water to sweep the contaminants away thus, preventing a build up.

Normal RO purifiers remove more than 90 percent of the TDS and all impurities within the water. These impurities may vary from bacteria, virus, protozoa, cysts, coliform, physical and chemical contaminants etc..


UV water purifiers are ideal in locations where you receive soft water such as that from lakes or rivers and in which the TDS level is below 500mg.

In purifiers that use UV purification, a lamp is used to create UV rays to that the water is exposed. The UV rays penetrate in the microorganism and change its DNA, once this is completed then it is essentially killed and can not lead to any infection or even replicate! This method destroys about 99.99% of all organisms that cause diseases!

These purifiers do not change the chemical composition of the water or alter its taste. Since it doesn't alter the chemical makeup of water it cannot be used in locations where you get hard water.

Carbon Adsorption

When water has been passed across the carbon surface the contaminants are drawn to the surface. The carbon is processed to ensure it is incredibly porous, this provides a large surface area for adsorption or chemical responses. These carbon filters usually use granular carbon or blocks of powdered carbon. It's a widely used technology and is very effective against getting rid of pesticides, herbicides, chlorine, adware and other compounds. The quality of the filters are ranked by the size of particles it can remove. A filter that measures 0.5 micron is more effective than the one that measures 10 microns.

Ultra filtration (UF)

This procedure of purification removes dissolved solids involving the sizes of 0.005-0.1 microns. A lot of times it's used as a pre- treatment step ahead of Reverse Osmosis (RO). The Ultra filtration system works as a molecular sieve and it separates molecules based on the size. The water passes through a very fine filter that retains most macromolecules that are over a particular size like colloids, microorganisms etc.. Smaller molecules such as solvents pass through the filter. They work best in places where the TDS amount is below 500 mg/litre.


This method of purification is ideal if you live in an area in which you get tough water. To convert hard water to soft water, the water is passed over an ion exchange resin. Water flows over the surface and melts the sodium. The magnesium, calcium and other cations precipitate to the surface. Ion-exchange can decrease hardness in the water. It may also get rid of contaminants like iron, lead, copper, barium, radium and nitrates. This tech is usually integrated into water purifiers along with other methods.

Are you planning to buy a best water purifier then check here water purifier under 20000 and buy the best one for your home

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