We all need it and it is much less common than you might think. The earth has plenty of water but only a small fraction of it is fresh and clean. Our rivers are much dirtier than people think so cleaning water for drinking is becoming the focus of numerous scientists. We take some of the dirtiest and make it clean and drinkable right before your eyes.

Originally released by Film Ideas, 2014. Streaming video file encoded with permission for digital streaming by Infobase on March 15, 2019.

Crystal Clear Technologies (6:05); --Waste Water (3:37); -- Bull Run Watershed (3:10); -- Stormwater Runoff (6:13); -- Credits: Green Economy, The: Water Systems (0:35);.