Which is Best Water Purifier

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Some of us boil water before drinking; Some of us have resigned ourselves to buying packaged water regularly; And some of us invest in water filters and purifiers. The latter is a relatively expensive proposition but consumers are opting for it because it is considered the best bet against unsafe or contaminated water. 


Which is Best Water Purifier
Which is Best Water Purifier

The market for water purifiers – from simple filters and gravity-based purifiers to the latest technologies such as reverse osmosis, ultrafiltration (UF) and ultraviolet (UV) and their combinations – is growing exponentially, and there are various brands available in each category. Predictably, this vast range has also increased the complexity of purchasing the right purifier for your home or office. 

Anyway, how many of us realize that the water purifier we buy should match the quality of water supplied to our homes/offices? Do you know which impurities are removed by which type of water purifier? Do we know what these impurities are? The first thing you need to choose is a water-treatment method and knowing the water quality in your area will help here. 

Also, be aware that some technologies waste a lot of water to recover clean water, while technologies with little or no waste may not be the best fit for your area's water. The following guide will help you sort out the various parameters you want to evaluate before making a purchase. 

 Which is Best Water Purifier

The most common water purification technique 

There are various types of water purification techniques, however, here are some commonly used water purification methods that have proven their suitability for household use.  

Gravity-Based Purifier (Candle Filter) 

Gravity-based purifiers work on the force of gravity from the upper compartment to the lower compartment. These are the easiest to use and provide the most basic water purification. These filters typically consist of sludge or sludge + activated carbon filters that can remove large and dissolved impurities such as mud and sand along with some chemicals and microorganisms. 

There are ceramic candle-based filters with two stainless-steel containers where ceramic candles are mounted in the upper container. The candles are impregnated with a silver solution that acts as a strong repellent against pathogenic bacteria.

Ultrafiltration (UF) 

Ultrafiltration uses a semi-permeable membrane with large pores (approximately 0.01 micron) compared to RO (which has much smaller pores of approximately 0.0001 micron). The advantage of the UF purifier is that it can work without electricity because the membrane has very large pores and water can flow naturally through it using the force of gravity. 

This means no external pressure or water pump is required. As UF purifier does not block water, there is no wastage of water. There are some limitations, though. Due to the large pore size, UF can only remove dissolved solids and large impurities. It cannot remove dissolved solids or reduce TDS levels. So, UF purifiers are not suitable for purifying high TDS water or hard water.  

Ultraviolet purifier (UV) 

UV purification is the best option for getting rid of bacteria and viruses without removing the essential minerals available in your drinking water. UV purification is the most eco-friendly way to purify your water because it doesn't add any chemicals to your water and it doesn't waste your water. Also, UV technology is a popular choice for industrial water purifiers. 

Reverse Osmosis Purifier (RO) 

Water purifiers with RO technology are effective in removing invisible impurities. It also helps reduce water hardness by removing harmful chemicals and the presence of lead, arsenic, mercury and chlorine in it. RO filtration technology is used for water supplied from underground sources or water tankers. This method also works to filter sea water and make it drinkable. Choosing an RO water purifier helps if the water test shows low TDS (Total Dissolved Salt). It is also recommended to have a UV feature on your RO water purifier.  

Also Read :  8 Best Water Purifiers in India

What is the appropriate quality of drinking water? 

Before we understand how purifiers work for you, let's consider the standards of drinking water suitable for human consumption. TDS or Total Dissolved Solids in drinking water is the amount of dissolved impurities such as metals, minerals, salts, ions in a specific amount of water. 

A TDS meter can be used to check the TDS of your water supply. It's cheap, just a few bucks and you're good to go. According to the World Health Organization (WHO), the ideal TDS for drinking water should be between 100-300. So, if the TDS of your drinking water falls between 150-200 then it is safe to drink.

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