* 97% of the water on earth is in the oceans * Only 3% of the water on earth is fresh water (not salty) * About 2.4% of the water on earth is permanently frozen in glaciers and at the polar ice caps * About 1/2 of 1 % of the water on earth is ground water (under the ground) * Only about 1/100 of 1% of the water on earth is in the rivers and lakes * A person can live about a month without food, but can live only about 1 week without water.