Diet waste of water: here’s how to reduce it

Diet waste of water: here’s how to reduce it

Recently there is a lot of talk not only about CO2 emissions and the so-called Carbon Footprint, but also about the waste of water that derives from the products we usually consume.

Did you know for example that 21 liters of water are needed to produce a 100 gram chocolate bar? Research that appeared in Nutrients magazine reveals how much water we waste through consumer food.
By comparing these data with those of other studies and insights like this one, we can understand how much water is wasted in everyday life and diet.


  1. Which are the countries that have less water resources.

    African ones, some South Americans, Greenland and the Trans-continental states between Asia and Europe plus Mongolia. The United States and Australia are the countries that have the most water per capita.

  2. Those countries that have more water available tend to waste more.

    And in fact they consume much more water per person. According to the study, an Australian uses three times as much water as an Englishman.

  3. In general, women tend to waste less water than men, even for food choices.

    The elderly less water than the young.

  4. Monocultures (cereals, legumes, etc.) use from 500 to 4000 liters of water to produce a kilo of wheat or legumes.

    If this grain is used for livestock, we get to waste from 5,000 to 15,000 liters of water per kilo of meat.

  5. If, on the other hand, we ate meat raised on pasture, there would not be this huge waste of water.

    In fact, in countries where animals are raised on grass, such as Argentina, New Zealand and Australia, farming uses for a kilo of meat only a third of the water that is needed to produce a kilo of fruit. Same differences between fresh catch and farmed fish.

  6. It is estimated that an adult individual wastes between two thousand and five thousand liters of water per day.

    This is between diet, home and personal care. For the diet, on the other hand, we mean: the water that was used to produce a certain food , thus starting from the production chain, in an estimated dose for per capita consumption. Hence the 21 liters for the 100 gram chocolate bar. So: all the water that is used from the plantation to the processing of the product to make that chocolate, divided by single bar.

  7. For the fruit we bring to the table alone, we can waste 65 liters of water a day.

    For dairy products and vegetable milks, almost 40 liters of water are gone every day. For biscuits, chocolate, snacks and various chips we get to waste 50 liters of water a day. If we add sparkling drinks, juices, etc., we get to 80 liters. It is meant: by average daily portion. Let’s see how much water we waste with our food choices and how to waste less

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