Solution:Filtration can be done using a muslin cloth or any cotton fabric. It can be used to to filter cheese, wine and preserves.
On swirling with alum impurities get coagulate and settled down in glass when leaving undisturbed
The clear liquid above impurities is poured in another tub (Decantation)
Boil for some time in a covered pan to kill harmful bacteria and other microorganisms. After cooling, this water is now fit for drinking.