A single pair of jeans requires about 1,500 gallons of water to make. This is roughly 70 10-minute showers or 937 loo flushes’ worth. On average, according to Fashion United, women own seven pairs of jeans; men own six. Those 10,000-plus gallons could fill a compact swimming pool.
Why so much water? The cultivation of cotton, the primary material in denim, is highly water-intensive, as is dyeing and washing (many pairs of jeans are washed multiple times during production to soften the…

