Drinking Water Treatment!
Discover how municipalities treat their drinking water and create your own filtration system at home.
MATERIALS
- Plastic pop bottle
- Two cups
- Scissors
- Food colouring
- Earth or dirt
- Coffee grinds or tea leaves
- Cotton balls
- Coffee filter or paper towel or napkin or old sock
- Gravel
- Sand
- Timer (you can use one from a watch or cell phone)
- Activated charcoal or carbon* (optional but you can get it from aquarium filters at pet stores)
* Activated charcoal or carbon is a form of carbon (chemical) that has lots of holes within it that allows it to react or stick to other chemicals and to remove these from water. It helps to clean water by getting rid of certain chemical impurities found within it.
