ECONOTES – Water

• 30% of fresh water is in the ground.

• 1.7% of the world’s water is frozen and therefore unusable.

• Approximately 400 billion gallons of water are used in the United States per day.

• Water can dissolve more substances than any other liquid including sulfuric acid.

• The freezing point of water lowers as the amount of salt dissolved in at increases. With average levels of salt, seawater freezes at -2 °C.

• About 6,800 gallons of water is required to grow a day’s food for a family of four.

• 780 million people lack access to an improved water source.

• 1/3 of what the world spends on bottled water in one year could pay for projects providing water to everyone in need.

• Water weighs about 8 pounds a gallon.

• A jellyfish and a cucumber are each 95% water.

• 70% of the human brain is water.

• Up to 50% of water is lost through leaks in cities in the developing world.

• $260 billion is the estimated annual economic loss from poor water and sanitation in developing countries.

• A person can live about a month without food, but only about a week without water.

• Water expands by 9% when it freezes.

• There is about the same amount of water on Earth now as there was millions of years ago.

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