Reverse osmosis (RO) is a water purification technology that uses a semipermeable membrane to remove ions, molecules, and larger particles from drinking water.
Ultraviolet germicidal irradiation (UV purification) is a disinfection method that uses short-wavelength ultraviolet (UV-C) light to kill or inactivate microorganisms
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We gave ratings to water purifier 1 to 5. Here are some variables that we consider while rating a water purifier.