This is one of the key messages that FAO is transmitting this week at World Water Week in Stockholm, Sweden. The annual event brings policy makers and experts from around the globe together to discuss pressing issues related to water and its management.

In a speech made today at the Week's opening ceremony, FAO Director-General José Graziano da Silva stressed that "there is no food security without water security," noting that FAO's recent report, The State of Land and Water Resources for Food and Agriculture, warns that water scarcity and pollution are posing a growing risk to key food production systems around the world.

"Agriculture, as we practice it today, is one of the causes of this phenomenon, as it represents 70 per cent of all freshwater uses," said Mr Graziano da Silva.

But, he also noted, the food production sector also offers tremendous potential for changing how the world uses water.

"Agriculture holds the key to sustainable water use," said Mr Graziano da Silva. To achieve that and meet the world's growing demand for food, "we need to produce in a way that conserves water, uses it more sustainably and intelligently, and helps agriculture adapt to climate change" he added.

Toward that end, FAO is proposing a new framework for water management in agriculture: Coping with water scarcity: An action framework for agriculture and food security.

FAO's framework stresses in particular the importance of the following areas where policy and action should focus:

Modernisation of irrigation: age-old canal irrigation schemes need to be modernized to respond to the needs of tomorrow's farmers, allow for the more efficient use of water and increase productivity. Future irrigation will increasingly be piped irrigation and combine different sources of water, including groundwater, in a sustainable way.

Better storage of rainwater at farm level: by storing water in small ponds or directly in the ground, farmers can reduce drought-related risks and increase productivity.

Recycling and re-using: water re-use, in particular treated wastewater from urban centers, can play an important role for agricultural production in arid areas. A more systematic way of safely using such water can boost local production.

Pollution control: better water quality regulations, together with effective enforcement mechanisms, needs to be put in place to reduce water pollution, which aggravates water scarcity.

Substitution and reduction of food waste: agricultural policies must consider the potential that rainfed production still offers in many places, and seek a much more integrated combination of irrigated and rainfed farming.

At the same time, the reduction of post-harvest losses must be part of any water scarcity coping strategy. Of all food produced globally, 30 per cent - the equivalent of 1.3 billion tons - is lost or wasted every year along the value chain from field to fork. Reducing these losses go a long way towards reducing pressuring on natural resources that are essential to food production, like soils and water.