There are many harmful bacteria, viruses, and other micro-organisms that thrive in water. If they come in contact with food, those micro-organisms then transfer to the foodstuffs.
Food can be contaminated in various ways.Most commonly food is contaminated from lack of cleanliness. Germs and bacteria can be transferred from your hands or any surface to the food being handled...
All food has water, because all plants and animals have water in their system, and baked items, such as cake, bread, etc. contain some liquid, and all liquids are made up of water. So no food, as far...