The Earth is a watery planet, but there is actually very little of that water we can use. NASA Goddard breaks out in great detail how we use the fresh water that’s available.
97% of Earth’s water is made up of ocean water, making it unusable for consumption. Of the remaining 3%, 2% is held in glaciers, icecaps, and ground water. This leaves only 1% of Earth’s water for us to use. In the US, about 49% of that water is used in thermal-electric power production, 31% goes into agricultural use, 11% sees public use, 4% to industries and manufacturing, and the remaining 1% is used domestically. This water mostly comes from precipitation. In the developing world, around 70% of fresh water is used for agriculture, 20% industrial use, and 10% public use. NASA’s Global Precipitation Measurement satellite helps people to plan for drought periods in places where water is less available or accessible.