Over 70 percent of Earth’s surface is covered by water; however only 2.5 percent of that water is actually drinkable water, all the rest is salt and brackish water, which is not safe to drink. Moreover, 70 percent of that fresh water is frozen in the Antarctica and Greenland ice caps (Human Appropriation of the World's Fresh Water Supply). Furthermore, the amount of this small percentage of water being made available to people has been in a steady decline as the years go by, this is called water scarcity. Water scarcity is the lack of enough water or the lack of clean water (Suwal Sahisna). I previously said that only 2.5 percent of the world’s water supply is actually drinkable, moreover, according to worldometer.com, a population recording website, the population as of 2012 has exceeded 7 billion (Population Clock: 7 Billion People - Worldometers). 2.5 percent of the entire world’s water supply must be shared among with a growing population of 7 billion people. Furthermore the population of the world is rapidly increasing but the world’s water supply is not, meaning that water scarcity is becoming much more common.