The Environmental Impact of Food Waste

The environmental costs of food waste for Ireland are huge. But, when you think about the whole food cycle globally, they become absolutely massive.

In Ireland we are generating at least 1.27 million tonnes of food waste each year. While some is anaerobically digested to make biogas, composted or rendered for animal food, some still ends up in landfills or incinerated. But this is only part of the problem, there is a whole load of environmental impacts long before we the consumers dispose of our food waste.

The UN Food and Agriculture Organisation (FAO) calculates that 1.3 billion tonnes of food is wasted each year, directly contributing to food shortages, water stress, unnecessary biodiversity loss, and increased greenhouse gas emissions. Globally, more than one quarter of food purchased is wasted; with food loss & waste contributing 8-10% of total anthropogenic GHG emissions.

But what does this mean?

  • Well, 1.4 billion hectares of land, which is equivalent to 28 per cent of the world’s agricultural area or 200 Irelands, is used to produce food that is then lost or wasted.
  • In addition, each year over 100 times the water that flows through the river Shannon is used to produce food that is ultimately wasted.
  • As a result of all this, the economic losses associated with food loss, excluding seafood, are estimated to reach €550bn a year. And this at a time when the global population is getting ever bigger and putting a huge strain on the existing food supplies

With all of these negative effects, reducing global food waste has been identified as one of the most effective ways to fight climate change.

“We all – farmers and fishers; food processors and supermarkets; local and national governments; individual consumers – must make changes at every link of the human food chain to prevent food wastage from happening in the first place, and re-use or recycle it when we can’t,” said FAO Director-General José Graziano da Silva in a statement. “In addition to the environmental imperative, there is a moral one: we simply cannot allow one-third of all the food we produce to go to waste, when 870 million people go hungry every day.”

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