![]() ![]() That leaves just 1% for all of humanity's needs. ![]() Another 2% is locked in ice caps and glaciers. Nearly 97% of the world's water is salty or otherwise undrinkable.Water makes up 66% of the human body and 75% of the human brain.Water is the only substance on earth naturally found in the three true element forms: solid, liquid and gas.There are over 59,000 public water systems in the United States.Water is the most common substance on earth.A single birch tree will give off 70 gallons of water per day in evaporation.Indoors nearly 40% of the water used gets flushed down toilets, and more than 30% is used in showers and baths.A person should consume 2.5 quarts of water per day (from all sources of water, food, etc.) to maintain health.Only 6% of that - 27 billion gallons - is taken by public water supply systems. The United States uses some 450 billion gallons of water every day. ![]()
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May 2023
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