Buying Guide to Choose the Best Water Purifier 2019 One must not think too much before making an investment in health-related products and investing in a water purifier is just that. But, before you even decide to buy a water purifier, you must get your water supply checked for quality to make sure that you need one. And if you do need one, you should be sure of exactly what you need in a water purifier. If you follow the steps described below, you will be able to select the best water purifier.
Your need for a water purifier will lead you to choose between UV, UF and RO, either individually or in a combination of two or all three. This will depend on the impurities present in the water, which can be suspended, dissolved or biological.
The criteria for choosing the right kind of purifier is detailed below. 1. Physical Appearance of Water If the water seems murky, it shows the presence of suspended impurities. For this kind of water, you will need to use Ultrafiltration purifiers, which use a semi-permeable membrane for purification of water. The pores of this membrane are much larger than those of an RO membrane. 2. Presence of Dissolved Impurities The dissolved impurities present in the water contribute to the TDS levels of the water. If the TDS levels in the water are high, they must be brought down to an acceptable level as per WHO guidelines. For this, you would need to use an ​RO water purifier​. They must not be used if the TDS levels are low. 3. Presence of Biological Impurities If there are disease-causing germs present in drinking water, you are very susceptible to illnesses. These contaminants can be disabled using UV rays. The main criteria for the selection of the best water purifier must be nothing but the source of water and hence the quality of water made available to your homes.