A third of world food productions ends up as waste (1,300 million tonnes per annum, according to the FAO) and this has a direct effect on freshwater scarcity. According to Water Footprint Network figures, the water footprint in Spain is 6,700 litres per person per day. “Almost 80% of this water consumption is food-related”, Naiara Sáenz pointed out, with meat consumption being the greatest contributor, accounting for 35% of water footprint.
In Spanish homes, we waste the same quantity of food as we consume. According to a study entitled “Evaluating the Water Footprint of the Mediterranean and American Diets”, carried out by Ceigram, food waste alone accounts for the loss of 131 litres of water per person per day in Spanish homes. This is the same volume of water consumed by a person for domestic use, according to figures from the Spanish National Statistics Institute (INE).
Nonetheless, Sáenz explains that food waste is not just the responsibility of consumers. “In Europe domestic food waste accounts for 33% of total food waste. Where does the rest of the waste come from? The answer is simple. Waste also occurs throughout the food value chain, from when it is gathered, processed at a production plant and distributed to supermarkets and homes.