Water from any natural source is generally heavily contaminated. Wells, rivers, or reservoirs-drinking water directly, without filtering it in a water purifier, can cause many ailments. Even tap water, that is said to be treated before reaching you, is located to possess many contaminants. Hence it becomes imperative that you make use of a trusted and reputed water purifier to purify the water you consume. Water purifiers in India, can be found in a range of types and brands, every one claiming to be the best. Before you accept a water purifier though, it is vital to understand what kind of filtering systems they provide and also how effective each is. Only then would you make an informed decision before buying.

Water purifiers are often classified into five basic types. Distillation Type - These water purifier distill water i.e. water is allowed to boil and vapors are collected to offer pure drinking water. This process successfully removes contaminants, sediments and microorganisms. The disadvantage of such water filters is that it is very slow and gives approximately only 1 liter to every ten liters filtered. Also, the distillation process doesn't allow oxygen to feed, thereby reducing the caliber of water.

Activated Carbon Type - These types of water filters use carbon particles to filter water. The contaminants and sediments in water stay glued to carbon surfaces, and you receive clean water. Additionally, it effectively removes any odor that may be present. The disadvantage with this filter is that it cannot kill the microorganisms within the water.

Backwash type - Water is passed through a purifying medium, which traps sediments, residue and contaminants. Various kinds of purifying cartridges can be purchased in the market. The downside of this kind is again, that it doesn't kill harmful microorganisms. Reverse Osmosis purifiers - RO as it is named, was developed to desalinate seawater. Water is passed through a partial permeable membrane so that only single molecules can pass through. This process effectively removes contaminants in water, although small microorganisms may escape through. What Is A Surface Water Treatment Plant?

Ultra Violet filter - UV filters produce ultra violet radiation, more intense compared to sun, to kills microorganisms such as for instance bacteria, viruses, algae, molds and oocysts, within the water. These filters are most effective only when water passing through the UV filtration is free of contamination. Sediments or contaminants within water can cause shadows and hence prevent the UV rays from attaining the microorganisms.