4 to 1 is nowhere close to the right ratio for water to milk produced. The numbers vary a lot depending on the region and how you calculate them but the correct

4 to 1 is nowhere close to the right ratio for water to milk produced. The numbers vary a lot depending on the region and how you calculate them but the correct range is between 100:1 and 1000:1. https://sciblogs.co.nz/waiology/2012/05/24/how-much-water-does-it-take-to-produce-one-litre-of-milk/ https://sciblogs.co.nz/waiology/2012/05/24/how-much-water-do...