Household water filters have become one of the common appliances in modern households, used to provide clean and safe drinking water. However, water filters are not "one size fits all". There are many types of filtration systems inside them based on different functions and technologies.

The reverse osmosis system can remove heavy metals (such as lead, mercury, arsenic), nitrates and other harmful substances in water. The reverse osmosis system can provide safer drinking water, especially for sensitive groups such as infants, pregnant women and the elderly.