When we talk about water consumption, we think almost exclusively of the drinking water used on a daily basis. Much less well known, however, is the concept of the water footprint of food—that is, the total volume of water used to produce a food product, from field to plate.

For example, producing one kilogram of beef requires, on average, more than 15,000 liters of water, including water for feed production, animal drinking water, and slaughtering processes. By comparison, one kilogram of vegetables has a water footprint of only a few hundred liters, while cereals fall somewhere between these two extremes.

Dairy products occupy an intermediate position. Producing one liter of milk requires approximately 1,000 liters of water, depending on the production system and farm efficiency. Aged cheeses have a much larger water footprint, as significant quantities of milk are needed to obtain one kilogram of the final product.

Beyond the figures, the major issue is the geographical distribution of resources. A large share of the food consumed in Europe comes from regions already affected by water stress. Thus, importing food products also means, indirectly, importing “virtual” water.

For industry, the concept of the water footprint is becoming increasingly relevant in the context of new European sustainability policies. For consumers, this information can influence simple choices: reducing food waste, diversifying diets, and favoring local products can have a real impact on global water consumption.

Water is not visible in the final product, but it remains one of the most costly ingredients of modern food systems.

(Photo: Freepik)