Charcoal water purifying

 In science I am starting the science fair projects. The topic I chose is purifying water with charcoal. I have to identify the topic I chose and investigate how it is useful. Water filters use a special type of charcoal known as activated charcoal' to purify water. The activated charcoal is able to remove the food colouring from the water. The food colouring molecules bind with the charcoal and come out of the water solution.  My hypothesis is   I think that charcoal can purify and remove molecules from water. I don't think that charcoal has a direct  impact on the health of our body but I do believe it can purify water and that's what I’ll be testing.