Water is one of the most abundant resources we have in the world. It is considered the ultimate sustainable resource due to the hydrologic cycle that returns water back to nature for reuse in the form of precipitation. This precipitation, when immediately formed, will be water in its purest form. As it falls through the sky and travels to the different water sources (e.g., ground water, surface water, etc.) it will pick up a variety of impurities. Water is therefore commonly called the universal solvent since it has the ability to dissolve, to a certain extent, almost every substance found in nature. However, not all water qualities are the same and will vary across geographic regions.