The hypothesis is that water can be effectively filtered to keep it clean.

You will see the techniques that are used to filter our water, gain an idea as to various pollutants which can contaminate our water, and filter water at their desks.

You will need a large filtering tube, a large glass fish tank or jar, a bag of charcoal pebbles, sand, and gravel, micropore filter paper, petri dishes, chlorine, and a strainer.

Through this project, students will gain an understanding of the importance of keeping our water supplies clean and the techniques used to filter water. They will also observe how different materials can be used to filter out pollutants.

This science project is interesting and unique because it allows students to gain hands-on experience with water filtration and understand the importance of keeping our water clean.

Experiment variations to consider include testing different types of filtration materials and testing different types of pollutants.