how much water does a person need per day to survive?
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A normally active person needs about three quarters of a gallon of fluid daily, from water and other beverages. Absolute Minimum Requirements...for replacement purposes, for an "average" person, has been estimated to be approximately 3 liters (3.2 quarts) per day, given average temperate climate conditions.
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Each person uses about 142 litres of water each day. The average household uses 349 litres of water each day1.
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While statistics abound to quantify how much water is needed for various purposes (drinking water needs are 2-5 litres per person per day, household needs are 100-500 litres per person per day, to produce 1 kg of grain takes 300-3,000 litres and to produce 1 kg of beef 7,000-10,000 litres), no good estimates exist for ...
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How Much Water Should I Drink Every Day? The National Academy of Sciences recommends drinking about 11 cups of water per day for women and 16 cups per day for men. But, this number can vary based on lifestyle, body size, and other factors. If you're active, you'll need to increase your daily water intake.
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Increased water intake can help people avoid dehydration and heatstroke on hot days. On average, people should drink eight to 10 glasses of water a day just to stay hydrated and healthy, according to the Center for Disease Control.
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Hot water is no different than room temperature or cool water when it comes to keeping you hydrated. A common recommendation from health authorities is that an adult should drink eight 8-ounce glasses (about 2 liters or a half gallon) of water a day.
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The National Academy of Sciences recommends drinking about 11 cups of water per day for women and 16 cups per day for men. But, this number can vary based on lifestyle, body size, and other factors. If you're active, you'll need to increase your daily water intake.
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Adults aged 19 to 30 years The adequate intakes recommended for total water from all sources each day for most adults between 19 and 30 years of age are: 3.7 liters (or about 130 fl oz) for men. 2.7 liters (about 95 fl oz) for women.
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It is recommended that women should drink about 1.6 litres and men about 2 litres of water per day. That's about eight glasses of 200ml each for a woman, and 10 glasses of 200ml each for a man. However, you will need to drink more if you are exercising or if it's hot i.e. if you are sweating more.
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Given that evidence is lacking and many factors affect individual hydration needs, drinking a gallon (3.8 liters) of water per day is likely arbitrary and unnecessary — unless your body requires that much water for proper hydration.
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Estimates vary, but each person uses about 80-100 gallons of water per day [in litres, that is between 302 and 378 litres]. Over on the United States Environmental Protection Agency (EPA) site, they offer this: The average American family uses more than 300 gallons of water per day at home.
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Back in 1945 the Food and Nutrition Board of the National Research Council stated that adults should take in about 2.5 liters of water per day (which is roughly the equivalent of eight glasses of water), but it also noted most of that intake level was already satisfied through the consumption of food without the need ...
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So how much fluid does the average, healthy adult living in a temperate climate need? The National Academies of Sciences, Engineering, and Medicine determined that an adequate daily fluid intake is: About 15.5 cups (3.7 liters) of fluids for men. About 11.5 cups (2.7 liters) of fluids a day for women.
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—, it would be somewhere between 1 and 3 liters— that's the equivalent of losing between four and 13 8-ounce glasses of water every day. To stay well hydrated, the U.S. government estimates that women need 2.7 liters (11 glasses) of water and men need 3.7 liters (16 glasses) each day.
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How much water do you need to drink every day? A common recommendation is to drink six or eight 250 mL (8 fl oz) glasses of water or other fluid every day. But some adults may need more or less, depending on how healthy they are, how much they exercise, and how hot and dry the climate is.
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The NHS recommends drinking 1.2 litres of water per day (six to eight glasses), but Somani believes as much as three litres is needed daily, especially in warm weather.
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NHS Choices' page on Water and drinks says: Your body needs water or other fluids to work properly and to avoid dehydration. That's why it's important to drink enough fluids. In climates such as the UK's, we should drink about 1.2 litres (six to eight glasses) of fluid every day to stop us getting dehydrated.