Today in science we created water filters. We got a batch of mystery water and we put in in our filters. The materials me and my group used were,: Coffee filters, cotton balls, cheese cloth, sand,  gravel, and a two litter bottle.  I was watching it drip and drip, it took 380 seconds just to fill 1/4 of a cup! When it finished I wondered, can I make a filter that can make the cleanest water ever? Then me and my group brain stormed ways to improve our filter design. We came up with a bunch of designs.

How long would you wait for filtered water?