Science

Pollution of Air and Water

What is Potable Water and How is Water Purified

Boojho is very upset. He tells Paheli that he drank water which looked clear and was without any smell, but still he fell sick! Paheli explains that water which looks clean may still have disease- carrying microorganisms and dissolved impurities. So. it is essential to purify water before drinking, for example, by boiling. Water which is suitable for drinking is called potable water. You have seen how various physical and chemical processes in the sewage treatment plants help to clean water before discharging it into water bodies. Similarly, municipal bodies treat the water before supplying it to households.