Why should you not drink fresh water directly from the tap?
It is salty
It contains microbes
It is not tasty
Anu showed Appu a sample of water from the Ganga River. It was not transparent and contained some suspended grime. Appu said that he could make it drinkable. He filtered the water using a filter paper to remove the grime. The filtered water was clean; Appu also boiled this water to kill harmful microbes and gave it to Anu to drink. Anu said that the water was still polluted and undrinkable. Can you say why?