Explain the traditional ways of purifying water to make it fit for drinking.
The various traditional ways of purifying water to make it fit for drinking are as follows:
(i) By filtering This is a physical method of removing impurities. A popular household water filter is a candle type water filter.
(ii)By boiling When water is heated, it boils at a temperature of 100°C. At this high temperature, all the harmful microorganisms (or germs) present
in water are killed and it becomes absolutely safe for drinking. Many household use boiling as a method for obtaining safe drinking water.
(iii)Chlorination It is a commonly used chemical method for purifying water. It is done by adding chlorine tablets or bleaching powder to the water.
Chlorine kills all the harmful microorganism (or germs) present in water and makes it absolutely safe for drinking.
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