how much percent of water is available for human use?
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The earth has an abundance of water, but unfortunately, only a small percentage (about 0.3 percent), is even usable by humans. The other 99.7 percent is in the oceans, soils, icecaps, and floating in the atmosphere. Still, much of the 0.3 percent that is useable is unattainable.
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What is Average? The water industry estimates that an average person uses 3,000 gallons of water monthly, so a family of 4 would use 12,000 gallons for bathing, cooking, washing, recreation and watering. But a lot of factors come into play when calculating average use.
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Water use per person (personal, agricultural and industrial): 116,000 gallons, compared to 484,500 gallons in the United States. About half of China's water is used for irrigation. This figure may rise to 70 percent by the next century.
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Total per capita water use, which includes residential, industrial, commercial and other uses of water provided by public utilities, averaged 427 litres per person per day in 2017, down 4% from 446 litres per person per day in 2015.
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An adult (with 70 kg body weight) contains about 42-45 litres of water. On average, the body of an adult human being contains 60% water.
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How Much Water do you Use? The average person uses from 80 to 200 gallons of water a day. To translate that into cubic feet you would divide by 7.5 which calculates to 11 to 27 cubic feet per day. For a billing quarter it equates to 990 to 2,430 cubic feet per person.
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The average outdoor use across 9 sampled cities in the Water Research Foundation study was 50,500 gallons per household per year or 138 gallons per day (524 liters per day). Nearly 17 percent of homes irrigate their landscapes in excess of theoretical irrigation requirement.
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In reality, however, we have a limited amount of usable fresh water. Over 97 percent of the earth's water is found in the oceans as salt water.
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Fresh water on earth is only 2.5% of the total water when 70% of the earth's surface is covered by water. Around 70% of industrial waste is dumped to water. 80% of the water pollution is caused due to domestic sewage. More than 6 billion pounds of garbage, mainly plastic end up in the oceans every year.
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It collects, monitors, analyzes, and provides science about water (along with other natural resources), and issues related to it. According to USGS estimates, each person in the United States uses about 80-100 gallons of fresh water per day. On a monthly basis nationwide, Americans use 3.9 trillion gallons of water.
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For a detailed explanation of where Earth's water is, look at the data table below. Notice how of the world's total water supply of about 332.5 million mi3 of water, over 96 percent is saline. Of total freshwater, over 68 percent is locked up in ice and glaciers.
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Only about three percent of Earth's water is freshwater. Of that, only about 1.2 percent can be used as drinking water; the rest is locked up in glaciers, ice caps, and permafrost, or buried deep in the ground.
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Are humans using too much water? Scientists find humans could be consuming freshwater at an alarming rate, depleting the crucial natural resource. ... But freshwater, the stuff we drink and use to grow crops, makes up just 2.5 percent of the Earth's water, according to the US Geological Survey.
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3% of the earth's water is fresh. 2.5% of the earth's fresh water is unavailable: locked up in glaciers, polar ice caps, atmosphere, and soil; highly polluted; or lies too far under the earth's surface to be extracted at an affordable cost. 0.5% of the earth's water is available fresh water.
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An average American uses 100 to 175 gallons of water per day. Globally, we consume around 4 trillion cubic meters of fresh water a year!
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Over 68 percent of the fresh water on Earth is found in icecaps and glaciers, and just over 30 percent is found in ground water. Only about 0.3 percent of our fresh water is found in the surface water of lakes, rivers, and swamps.
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The current average daily water consumption is 340 litres per person, or 900 litres per household. In addition, an average of 150 litres of water per person is used every day in the workplace by industry and commerce, community uses such as watering of public parks and gardens, firefighting and system leakage.