You would need these tools to set up a filtration device

1/2 L of swamp water (or tap water with mud or dirt added)

2 L soda pop bottle with its lid

2 L plastic soda pop bottle—cut in half (have an adult help with cutting)

1000 ml beaker

2 20 oz cups

1 tbsp alum (aluminum potassium sulfate)

2 c fine sand

1 c coarse sand

1 c small pebbles

1 filter paper or coffee filter

1 rubber band

1 large spoon for stirring

spoon for scooping the alum

stopwatch or timer