Water Pollution: Saving the water

Water is our most important resource (making up roughly 70% our bodies), yet we're destroying it through our pollution. Fresh water comprises of only 3% of all water on Earth. 2/3 of it are frozen, and aside from 0.3% of it being on the surface, the rest of it is underground.
For example:
Over 360 toxic chemicals have been identified in the Great Lakes, the largest group of freshwater lakes on Earth, as well as 43 toxic "hot spots," where areas are particularly poisonous.