It takes 3,781 litres of water to make a single pair of jeans.Circular production methods could trim the amount of water and other resources denim consumes.Many leading brands are backing a circular economy for jeans. For millions of people around the world, denim is a wardrobe staple. Yet a single pair of jeans uses 3,781 litres of water in its production lifecycle. Now top brands are having a rethink and backing a circular economy for denim. Bi...