Water purifiers have become a household essential, specially in city homes, where water from direct sources may not be healthy for consumption. Here's a detailed guide on everything you need to know about water purifiers and the best ones you can get your hands on. We've also detailed out the various types of water purifiers along with their comparison and advantages. Read ahead to know more and make an informed choice.
Impure or contaminated water is a carrier of many diseases. To get rid of it and the ailments that it carries, water purifiers have come to one's rescue. Water purifiers, based upon their working technology, can be classified under five heads; let's take a look at each one.
RO water filters that are widely used across the country use semi permeable-membrane to purify the water. The water pump pressurises the hard water to pass through this semi-permeable RO membrane, and during this phase the dissolved impurities like arsenic, lead, fluoride, sulfate, nitrate, and chlorine are trapped by the RO membrane, resulting in purified water. Only the best water filters working on RO technology can remove these impurities and provide you clean and safe drinking water.
RO water filters are basically of two types- one that can be mounted on walls or kept on the countertop and others that can be fixed under the sink or under a counter. This is one of the most popular types and one of the best water purifier category to invest in.
This is one of the best water filter type, which uses a combination of technologies such as RO+UV filter. The UV water filters are capable of killing waterborne disease causing microorganisms. The UV water filters do not use any sort of chemical to purify the water. These purifiers feature a UV lamp tube, the light from which kills all germs in the water. This water purifier combines UV and RO technology for complete purification wherein the UV rays kill the germs and the RO purification system removes any remains of the killed germs from the water.
UV filters are the perfect pick for areas where the the Total Dissolved Solids (TDS) in water are low (they are incapable to purify water with high TDS). UV filters also do not remove essential minerals from water. This is another kind of water purifier, which is popular among many as it is comparatively cheaper.
UF technology, when coupled with RO and UV technology, produces the best water filters that are capable of delivering purified, clean drinking water. The UF technology uses hollow fibers of a membrane made from a thin layer of material, which is used to separate water and other particles present in water. RO and UF technology work on the same principle.
UF filtration is suitable for places where water does not have any chemical contamination, as UF water filters are incapable of filtering such complex chemicals.
Gravity based water filters use activated carbon, which is made from small size carbon granules, and can absorb impurities present in water. The water in this process is filtered via a normal gravity process-- the water moves from the upper compartment to the lower compartment without any external force. For filtration, the activated carbon filters use microfibre mesh along with a polisher for the removal of residual chemicals.
The process used to purify water using activated carbon filters is called ‘adsorption'. In the process of adsorption, chemicals and metals stick to the carbon filter when the water passes through it.
The sediment filter is a pre-stage of filtration used along with other processes like RO or UV. The particles collected at the bottom of the water are known as sediments. These filters of a purifier work to eliminate the collected sediments that may comprise of metal, sand, mud or any other turbidity. The best water filters use this technology to get best results along with other technologies.
Most sediment filters are made of cotton or polyester fibers. These filters are placed just before the water inlet of any water filter.
|Water Type Filtered||Under ground water||Lake, river, and municipal supply water|
|Microorganisms||RO water purifiers block and remove bacteria and viruses from purified water. They also flush out microorganisms bodies.||UV water purifier kills bacteria and viruses remains from purified water but microorganisms bodies remain in purified water only.|
|Waste water||RO water purifier produces a lot of wastewater.||UV does not produce any waste water. Zero percent wastewater|
|Dissolved solids||RO water purifier removes dissolved solids and TDS.||UV water purifier does not remove dissolved solids|
|Time to purify||RO water purifier takes much more time to purify water||UV water purifier takes much less time to purify water|
|Water taste||RO water purifier alter water taste||UV water purifier does not alter water taste|
|Storage tank||Most of the RO water purifiers have storage tank||Most of the UV water purifiers don't have storage tank|
|Maintenance cost of||RO water purifier can cost double as much to a UV water purifier.||UV water purifier is inexpensive|
|Work with muddy water||RO water purifier requires pre-filtration such as sediment filter to work with dirty, muddy water||UV water purifier also requires sediment filter.|
Frequently Asked Questions About Water Purifiers
A. By doing a detailed comparison of the kind of water purifiers out there and the kind of water supply your area gets, you will be able to decide what kind of water purifier you need.
A. After checking the TDS of the water you can choose the right water purifier, but most of the RO purifiers are suitable to borewell water.
A. TDS anywhere in the range of 50 to 500 ppm is considered normal, RO purified water has a TDS range of 20-800 ppm.
A. This could be true about 10 years ago but now all RO purifiers come with mineral replenishment or mineral guard technology.
A. Although boiled water provides 100% protection from bacteria, virus and microorganisms, but it cannot deal with TDS. So, if your water has TDS and chemicals, then you need a RO to get rid of the chemicals, pesticides and industry pollutants.
|Best Water Purifiers||Price in India|
|Livpure Water Purifier||₹ 14,000|
|Kent Grand 11007 Water Purifier||₹ 16,199|
|Pureit Ultima Mineral Water Purifier||₹ 16,599|
|Eureka Forbes Aquasure from Aquaguard Smart Plus 6-litres RO+UV+MTDS Water Purifier||₹ 10,599|
|Havells Max 7-litres RO UV Water Purifier (Sea Green)||₹ 12,499|
|Kent Maxx 11013 Water Purifier||₹ 8,035|
|Eureka Forbes Aquaguard Crystal Plus UV Water Purifier||₹ 8,438|
|HUL Pureit Marvella G2 UV 4 Stage Table Top/Wall Mountable White & Blue 4 litres Water Purifier||₹ 8,199|
|Aquafresh splash water tech Plastic 14 Stage Advanced Mineral Technology Ro UV UF Minerals TDS Adjuster Ro Water Purifier, 407x269x930mm (White)||₹ 3,999|
|Aqua Fresh ZX Water Purifier||₹ 4,699|
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