By now, many of us are familiar with the term "carbon footprint," but what about our water footprint? While most people have their upcoming bill in mind when taking a long shower or watering the lawn, does anyone really think about H20 when grocery shopping?

As the Statista infographic below shows, depending on your diet, the food we buy can have a huge water footprint. If you buy 1 kilogram of beef for a weekend barbecue, there has been an average of 15,415 liters of water used in its production.

Breaking up meat's monopoly as the most thirsty food type is nuts, with 9,063 liters of water needed to produce the average kilo. Further down the scale are fruits and vegetables, requiring 962 and 322 liters per kilogram, respectively. In terms of the most water-efficient way to consume calories, the best option from this list is cereals, with 1 kilocalorie demanding 0.51 liters.

You will find more statistics at Statista