1. Do you really need a water purifier?

With the rampant increase in human settlements and industrialization, the ground and surface water is not what it used to be in the past. In addition to the visible impurities, you have to contend with the dissolved contaminants as well. The traditional methods of eliminating these impurities fall short on various fronts. Hence, you may need a UV, UF or RO water purifier.

2. What is TDS in water?

TDS refers to Total Dissolved Solids. Your drinking water supply contains dissolved metals, minerals, salts, and other organic matter. Water in its purest form is tasteless. You require TDS to impart taste to the water. However, excessive TDS is harmful to health.

3. What is the acceptable norm for TDS?

According to the World Health Organization (WHO), the ideal proportion of TDS is water is around 300 ppm (parts per million) or 300 mg/litre. Concentration levels of TDS below 50 ppm and above 500 ppm is unacceptable.

4. What are the different kinds of water purifiers available in the market?

In the normal course, you have 5 different kinds of water purifying systems.

  1. Reverse Osmosis (RO)
  2. Ultra Filtration (UF)
  3. Ultra Violet Purification (UV)
  4. Candle Filters
  5. Activated Carbon Filters

The ideal water purifier is the one that is a combination of all the above methods.

5. What are the different purification technologies available?

  1. Reverse Osmosis – Makes use of a semipermeable membrane to separate the impurities and contaminants from water. This technology is useful where you have hard water having high concentration of TDS.
  2. UF Purification – Similar to the RO method, but the membrane used in the process has comparatively bigger pores. This is suitable for removing all colloidal impurities. Hence, it is useful where you have water with less concentration of TDS.
  3. UV Purification – Also known as e-boiling in this industry. This technology involves the use of Ultraviolet light for eliminating germs, microbes, and bacteria from drinking water. It is better to use this technology in combination with others to be more effective.
  4. Candle Filters – In other words, it is a sediment filter. The only difference is that this system does not require electricity. It works on the principles of gravitational force. This is effective for eliminating the larger impurities.
  5. Activated Carbon Filters – Effective for eliminating the unpleasant taste, especially pesticides, chlorides, and other impurities. These filters can improve the taste of water and is best used in conjunction with some of the methods listed above.

6. What is the need for a TDS controller in RO filters?

The RO process is a comprehensive one that eliminates all the essential minerals from drinking water. However, you need certain minerals like magnesium and calcium, to name a few. The TDS controller performs the role of adding these essential minerals back to the drinking water before dispensing it.

We have seen some FAQs on water purifiers that always crop up whenever you decide to purchase water purifiers for your home. This information should prove useful to you and help you make the right decision.