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Estimation question

How many litres of water does it take to make a single pair of jeans?

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The answer

7,500 litres

About 7,500 litres. That is what a person drinks in about 14 years.

How to get there

  1. Just under 1 kg of cotton per pair (assumption)
  2. × several thousand litres for growing, dyeing and washing
  3. ≈ 7,500 litres

Source: United Nations, UN News: about 7,500 litres per pair of jeans

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