The total volume of water on the planet is approximately 1.4 billion cubic kilometers, but roughly 97.5% of that is saltwater. Of the remaining 2.5%, nearly 70% (approximately 24.5 million cubic kilometers) is trapped in ice, whereas approximately 30% (approximately 10.5 million cubic kilometers) is groundwater, and only 0.3% (approximately 105,000 cubic kilometers) is freshwater contained in lakes and rivers (UN Water, 2012).