The increase of organic agriculture in Germany raises the question of how water productivity differs from conventional agriculture. On three organic and two conventionally farming systems in Germany, water flows and water related indicators were quantified. Farm water productivity (FWP), farm water productivity of cow-calf production (FWP livestock ), and farm water productivity of food crop production (FWP food crops ) were calculated using the modeling software AgroHyd Farmmodel. The FWP was calculated on a mass and monetary basis. FWP livestock showed the highest productivity on a mass basis occurring on a conventional farm with 0.09 kg m −3 W input , whereas one organic farm and one conventional farm showed the same results. On a monetary basis, organic cow-calf farming systems showed the highest FWP livestock , with 0.28 € m −3 W input . Since the productivity of the farm depends strongly on the individual cultivated plants, FWP food crops was compared at the level of the single crop. The results show furthermore that even with a precise examination of farm water productivity, a high bandwidth of temporal and local values are revealed on different farms: generic FWP for food crops and livestock are not within reach.