How much water does the average person use a day?

Answer 1

A healthy person should drink about 2 liters of water per day

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If you are talking about how much water a person uses:
In the US, every person uses about 80 to 100 gallons per day.

For more information on how much water a person should drink :
How_much_water_should_you_drink_each_day

Answer 2

Typically, the average human uses anywhere from 50 gallons to 200 gallons of water

a day. This number varies depending on where they are, the availability of water, and

whether or not they use low flow toilets and shower heads.

Answer 3

8 12 oz glasses a day