Many facts about water that you may not know.

Water is the most important resource in the world. Here are amazing facts about water that you may not know.

  • 68.7% of the fresh water on Earth is trapped in glaciers.1
  • 30% of fresh water is in the ground.1
  • 1.7% of the world’s water is frozen and therefore unusable.1
  • Approximately 110 billion liters  of water are used in the United States per day.1
  • Nearly one-half of the water used by Americans is used for thermoelectric power generation.1
  • In one year, the average American residence uses over 30,000 liters (indoors and outside).1 
  • Water can dissolve more substances than any other liquid including sulfuric acid.1
  • 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 (28.4 °F).2
  • About 2000 liters of water is required to grow a day’s food for a family of four.3
  • To create 0,5L of beer it takes 7 liters of water.3
  • 780 million people lack access to an improved water source.4
  • In just one day, 200 million work hours are consumed by women collecting water for their families.4
  • 1/3 what the world spends on bottled water in one year could pay for projects providing water to everyone in need.4
  • Unsafe water kills 200 children every hour.4
  • It takes 35 liters of water for one egg.5
  • A jellyfish and a cucumber are each 95% water.5
  • 70% of the human brain is water.5
  • 80% of all illness in the developing world is water related.6
  • Up to 50% of water is lost through leaks in cities in the developing world.6
  • In Nairobi urban poor pay 10 times more for water than in New York.6
  • In some countries, less than half the population has access to clean water.7
  • $260 billion is the estimated annual economic loss from poor water and sanitation in developing countries.7
  • 40 billion hours are spent collecting water in Africa alone.7
  • The average cost for water supplied to a home in the U.S. is about $8.00 for 1,000 liters 8
  • A person can live about a month without food, but only about a week without water.8
  • Water expands by 9% when it freezes.8
  • There is about the same amount of water on Earth now as there was millions of years ago.9
  • The length of the side of a cube which could hold the Earth’s estimated total volume of water in km = 1150.10
  • Children in the first 6 months of life consume seven times as much water per pound as the average American adult.11
  • Americans drink more than one billion glasses of tap water per day.11
  • The United States draws more than 40 billion 151 million liters of water from the Great Lakes every day—half of which is used for electrical power production.12
  • 85% of the world population lives in the driest half of the planet.13
  • Agriculture accounts for ~70% of global freshwater withdrawals (up to 90% in some fast-growing economies).13
  • Various estimates indicate that, based on business as usual, ~3.5 planets Earth would be needed to sustain a global population achieving the current lifestyle of the average European or North American.13
  • Forty-for states are anticipating water shortages by 2020.14
  • 300 tons of water are required to manufacture 1 ton of steel.15
  • American use 1,5 billion liters per day from toilet flushes.15
  • It takes about 40 liters per day to sustain a human (this figure takes into account all uses for water, like drinking, sanitation and food production).16
  • Each day, we also lose a little more than a cup of water (237 ml) when we exhale it.17


  • By 2025, water withdrawals are predicted to increase by 50 percent in developing countries and 18 percent in developed countries.18
  • By 2025 half the world’s people will live in countries with high water stress.19
  • A water-efficient dishwasher uses as little as 1 liter per cycle but hand washing dishes uses 60 liters of water.20
  • It takes more than twice the amount of water to produce coffee than it does tea.21
  • Chicken and goat are the least water intensive meats to consume.21
  • There have been 265 recorded incidences of water conflicts from 3000 BC to 2012.21
  • Hot water can freeze faster than cold water under some conditions (commonly known as the Mpemba effect).22
  • If the entire world’s water were fit into a 4 liter jug, the fresh water available for us would equal only about one tablespoon.23
  • Over 90% of the world’s supply of fresh water is located in Antarctica.23
  • Water regulates the Earth’s temperature.23
  • On average, 37l per day of your water footprint (or 14% of your indoor use) is lost to leaks.24
  • The average pool takes 70.000 liters of water to fill.24
  • It takes about 250liters  water to fill a bathtub.25
  • Flying from Los Angeles to San Francisco, about 700 miles round-trip, could cost you more than 30.000 liters of water.25
  • Water use has grown at more than twice the rate of population increase in the last century.26
  • Only 0.007 percent of the planet’s water is available to fuel and feed its 6.8 billion people.26
  • Three quarters of all Americans live within 10 miles of polluted water.27
  • A swimming pool naturally loses about 1,000 gallons (3,785 liters) a month to evaporation.28
  • Producing a gallon (3.79 liters) of corn ethanol consumes 170 gallons (644 liters) of water in total, from irrigation to final processing. On the other hand, the water requirement to make a gallon of regular gasoline is just five gallons (19 liters).28
  • 40% of freshwater withdrawals in the United States are used for agriculture.29
  • 65% of freshwater withdrawals in China are used for agriculture.29
  • Freshwater withdrawals for agriculture exceed 90% in many countries:
  • Cambodia 94%, Pakistan 94%, Vietnam 95%, Madagascar 97%, Iran 92%, Ecuador 92%.29
  • An acre of corn will give off 12,000 L of water per day in evaporation.31
  • In a 100-year period, a water molecule spends 98 years in the ocean, 20 months as ice, about 2 weeks in lakes and rivers, and less than a week in the atmosphere.31
  • Water is the most common substance found on earth.31
  • In Washington state alone, glaciers provide 1.8 trillion liters of water each summer.32
  • Water makes up about 66 percent of the human body.33
  • There are no scientific studies that support the recommendation to drink 8 glasses of water per day.33
  • Drinking too much water can be fatal (known as water intoxication).33
  • There is more fresh water in the atmosphere than in all of the rivers on the planet combined.34
  • If all of the water vapor in the Earth’s atmosphere fell at once, distributed evenly, it would only cover the earth with about an inch of water.34
  • It takes seven and a half years for the average American residence to use the same amount of water that flows over the Niagara Falls in one second (2,5M L).34
  • 263 rivers either cross or demarcate international political boundaries.35
  • Of the estimated 1.4 billion hectares of crop land worldwide, around 80 percent is rainfed and accounts for about 60 percent of global agricultural output (the other 40% of output is from irrigated crop land).36
  • Household leaks can waste more than 3,7 trillion liters annually nationwide. That’s equal to the annual household water use of more than 11 million homes.37
  • Ten percent of homes have leaks that waste 270L or more per day.37
  • A leaky faucet that drips at the rate of one drip per second can waste more than 14,000 L per year.37
  • NASA has discovered water in the form of ice on the moon.40
  • A 2.6 billion year old pocket of water was discovered in a mine, 2 miles below the earth’s surface.41
  • Two-thirds of the world’s population is projected to face water scarcity by 2025, according to the United Nations.42
    1 slice of bread requires 40 literss of water.43
    1 apple requires 58liters of water.43
    1 pound of chocolate requires 10.000 liters of water.43
    500 sheets of paper requires 4000liters of water.43
  • Ground water occurs almost everywhere beneath the land surface.
  • The widespread occurrence of potable ground water is the reason that it is used as a source of water supply by about one-half the population of the United States.44
  • Hydrologists estimate, according to the National Geographic Society, U.S. groundwater reserves to be at least 33,000 trillion gallons — equal to the amount discharged into the Gulf of Mexico by the Mississippi River in the past 200 years.45
  • At any given moment, groundwater is 20 to 30 times greater than the amount in all the lakes, streams, and rivers of the United States.45