How water can be made safe for drinking:
a) You have already seen how water is filtered. This is a physical method of removing impurities. A popular household filter is a candle type filter.
b) Many households use boiling as a method for obtaining safe drinking water. Boiling kills the germs present in the water.
c ) Chlorination is a commonly used chemical method for purifying water.
It is done by adding chlorine tablets or bleaching powder to the water. We must be cautious. We should not use more chlorine tablets than
specified.