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1 - Rain-fed agriculture accounts for the remaining 80%. 2 - The efficiency of flooding is about 45%, according to figures from the United States Environmental Protection Agency. By comparison, micro-irrigation is about 90% efficient.

suited to each use. Ultrafiltration membranes are particularly effective for providing water suitable for the needs of agriculture and industry. Today, only 2% of the collected wastewater is reused.

The circular economy, the keystone of sustainable agriculture

There will be no sustainable human food without a circular economy. Water is not the only resource for which SUEZ solutions can accelerate the agricultural transition towards more virtuous circuits, as Pierre Achard, Agriculture Project Director France, reminds us.

We have to start by working on fertilisers, replies Laurent Galtier, Organic Activity Manager in the Innovation, Marketing and Industrial Performance

Expert algorithms enable farmers to optimise their water, energy and fertiliser consumption while maintaining or increasing production levels. However, more rational water resource management, though crucial, will not be enough to combat water stress, which could affect 40% of the world s population by 2035. It will be necessary to increase wastewater recycling for agricultural use, which currently accounts for only 2% of the wastewater collected worldwide.

This is an area where SUEZ is in the vanguard, with 800 million m3 of wastewater recycled every year and the target to triple its supply of alternative water (recycled wastewater, desalination) by 2030, which has already been achieved. Thanks to treatment techniques such as ultraviolet light, reverse osmosis and membrane filtration, the group can now recycle wastewater with a quality level

The use of recycled fertilisers is key to the development of responsible agriculture.