STOCKHOLM, Sweden, August 22, 2008 (ENS) – Tremendous quantities of food are wasted after production – discarded in processing, transport, supermarkets and kitchens – and this wasted food is also wasted water, finds a policy brief released Thursday at World Water Week in Stockholm [www.siwi.org].

The brief authored by the Stockholm International Water Institute, the UN Food and Agriculture Organization, and the International Water Management Institute shows that the current food crisis is less a crisis of production than a crisis of waste. Tossing food away is like leaving the tap running, the authors say.

“More than enough food is produced to feed a healthy global population. Distribution and access to food is a problem – many are hungry, while at the same time many overeat,” the brief states. But, it says, “we are providing food to take care of not only our necessary consumption but also our wasteful habits.”

A traditional Arab irrigation system in the
United Arab Emirates where every drop
is precious. (Photo by Zat3OoOr!)

“As much as half of the water used to grow food globally may be lost or wasted,” says Dr. Charlotte de Fraiture, a researcher at IWMI. “Curbing these losses and improving water productivity provides win-win opportunities for farmers, business, ecosystems, and the global hungry.”

“An effective water-saving strategy requires that minimizing food wastage is firmly placed on the political agenda,” she said.

In the United States, for instance, as much as 30 percent of food, worth some US$48.3 billion, is thrown away. “That’s like leaving the tap running and pouring 40 trillion liters of water into the garbage can – enough water to meet the household needs of 500 million people,” says the report.

The policy brief, “Saving Water: From Field to Fork – Curbing Losses and Wastage in the Food Chain,” calls on governments to reduce by half, by 2025, the amount of food that is wasted after it is grown and outlines attainable steps for this be achieved.

Through international trade, for instance, savings in one country might benefit communities in other parts of the world.

“Unless we change our practices, water will be a key constraint to food production in the future,” said Dr. Pasquale Steduto of FAO.

Water losses accumulate as food is wasted before and after it reaches the consumer.

In poorer countries, a majority of uneaten food is lost before it has a chance to be consumed. Depending on the crop, an estimated 15 to 35 percent of food may be lost in the field. Another 10 to15 percent is discarded during processing, transport and storage, the brief states.

Wasted food on the garbage line at a
U.S. college (Photo by Jonathan Bloom)

In richer countries, production is more efficient but waste is greater, the report says. “People toss the food they buy and all the resources used to grow, ship and produce the food along with it.”

As this wasted food rots in landfills it generates methane, a gas that causes climate change and is 21 times more potent than carbon dioxide.

The report stresses that the magnitude of current food losses presents both challenges and opportunities.

“Improving water productivity and reducing the quantity of food that is wasted can enable us to provide a better diet for the poor and enough food for growing populations,” says Professor Jan Lundqvist of the Stockholm International Water Institute.

“Reaching the target we propose, a 50 percent reduction of losses and wastage in the production and consumption chain is a necessary and achievable goal,” said Lundqvist.

World Water Week is hosted by the Stockholm International Water Institute, a policy institute that contributes to international efforts to combat the world’s escalating water crisis.

The annual event features the award of the 2008 Stockholm Water Prize, which this year was bestowed upon Professor John Anthony Allan from King’s College London, who introduced the “virtual water” concept.

Virtual water is a measurement of how water is embedded in the production and trade of food and consumer products and is the concept on which the policy brief, “Saving Water: From Field to Fork – Curbing Losses and Wastage in the Food Chain,” is based.

While studying water scarcity in the Middle East, Professor Allan developed the theory of using virtual water import, via food, as an alternative water “source” to reduce pressure on the scarcely available domestic water resources there and in other water-short regions.

Professor John Anthony
Allen (Photo courtesy SIWI)

By explaining how and why nations such as the United States, Argentina and Brazil export billions of liters of water each year, while others like Japan, Egypt and Italy import billions, the virtual water concept has opened the door to more productive water use, said the Water Prize Nominating Committee.

National, regional and global water and food security, for example, can be enhanced when water intensive commodities are traded from places where they are economically viable to produce to places where they are not.

“The improved understanding of trade and water management issues on local, regional and global scales are of the highest relevance for the successful and sustainable use of water resources,” the committee said.

The Stockholm Water Prize is a global award founded in 1990 and presented annually by the Stockholm Water Foundation to an individual, organization or institution for outstanding water-related activities. The activities can be within fields like education and awareness-raising, human and international relations, research, water management and water-related aid.

The Stockholm Water Prize Laureate receives US$150,000 and a crystal sculpture. H.M. King Carl XVI Gustaf of Sweden is the Patron of the Stockholm Water Prize.

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STOCKHOLM, Sweden, August 18, 2008 (ENS) – The world’s supplies of clean, fresh water cannot sustain today’s “profligate” use and inadequate management, which have brought shrinking food supplies and rising food costs to most countries, WWF Director General James Leape told the opening session of World Water Week in Stockholm today.

“Behind the world food crisis is a global freshwater crisis, expected to rapidly worsen as climate change impacts intensify,” Leape said. “Irrigation-fed agriculture provides 45 percent of the world’s food supplies, and without it, we could not feed our planet’s population of six billion people.”

Leape warns that many of the world’s irrigation areas are highly stressed and drawing more water than rivers and groundwater reserves can sustain, especially in view of climate change. At the same time, he said, freshwater food reserves are declining in the face of the quickening pace of dam construction and unsustainable water extractions from rivers.

The World Water Week fountain in
Stockholm (Photo by Alex de Sousa)

At a time when billions of people live without access to safe drinking water or suffer ill health due to poor sanitation, when food producers battle biofuel producers for land and water resources, and when global climate change is altering the overall water balance, 2,500 water experts are gathered this week at the Stockholm International Fairs and Congress Center to craft solutions to these problems.

World Water Week is an annual event co-ordinated by the Stockholm International Water Institute. This year’s conference has the overall theme of “Progress and Prospects on Water: For A Clean and Healthy World with Special Focus on Sanitation” in keeping with the UN declaration of 2008 as the International Year of Sanitation.

Prince Willem-Alexander of the Netherlands had good news for the delegates in his opening speech today.

The Prince of Orange, who chairs the UN Secretary General’s Advisory Board on Water and Sanitation during this special year, announced, “The number of people living without a supply of improved drinking water has now dropped well below one billion!”

“More than half the global population now have water piped to their homes and the number of people using unimproved water supplies continues to decline,” he said, praising the delegates for this accomplishment.

This year, the prince said, progress towards adequate sanitation has begun on international, regional, national and local levels. “The regional sanitation conferences for example, such as LatinoSan, AfricaSan, EaSan and SacoSan, produced unprecedented declarations that provide a strong foundation for developing the water and sanitation sector in these regions,” he said.

In June, the African Union Summit on Water and Sanitation in Sharm El Sheikh, attended by 52 heads of state and government, unanimously adopted a declaration on water and sanitation that shows that African leaders are giving top priority to water and sanitation, the prince said. “It also provides a solid basis for further developing the sector in Africa. I personally consider this result to be an enormous leap forward.”

Children in Sudan enjoy a clean
drink of water. (Photo courtesy UNICEF)

But Prince Willem said much more must be done to meet the UN’s Millenium Development Goal to halve the proportion of the population without sustainable access to safe drinking water and basic sanitation by 2015 from the year 2000 baseline.

Citing a report by the World Health Organization and UNICEF, he said, “The report’s worrying conclusion is that, at the current rate, the world will miss its MDG sanitation target by more than 700 million people. If we are to reach the target we now need to provide at least 173 million people per year with access to improved sanitation.”

A consistent supporter of World Water Week, the prince told the delegates he finds it “unthinkable” to let a year go by without visiting the conference, although he is supposed to be in Beijing observing the Olympic Games in his capacity as a member of the International Organizing Committee.

“I see similarities between these athletes and yourselves,” said the prince. “You show the same commitment and willpower. And the Olympic Dream is also your dream: to strive for a bright future of mankind. ‘One world, one dream.’ A world in which everyone can lead a healthy life in dignity. A world that offers the chance of personal development for all. This is our common dream.”

The delegates will need all the inspiration they can get to overcome the problems they face.

As developing countries confront the first global food crisis since the 1970s as well as unprecedented water scarcity, a new 53 city survey presented at the conference by the International Water Management Institute indicates that 80 percent of those studied are using untreated or partially treated wastewater for agriculture.

Latrine over a waterway in
Haiti (Photo by Remi Kaupp)

In over 70 percent of the cities studied, more than half of urban agricultural land is irrigated with wastewater that is either raw or diluted in streams.

“Irrigating with wastewater isn’t a rare practice limited to a few of the poorest countries,” said IWMI researcher Liqa Raschid-Sally and lead author of a report on the survey results. “It’s a widespread phenomenon, occurring on 20 million hectares across the developing world, especially in Asian countries, like China, India and Vietnam, but also around nearly every city of sub-Saharan Africa and in many Latin American cities as well.”

Wastewater is most commonly used to produce vegetables and cereals, especially rice, according to this and other IWMI reports, raising concerns about health risks for consumers, particularly when they eat uncooked vegetables.

In Accra, Ghana’s capital city, for instance, an estimated one-tenth of the city’s two million inhabitants daily purchase vegetables produced on just 100 hectares of urban agricultural land irrigated with wastewater, says the IWMI report. “That gives you an idea,” said Raschid-Sally, “of the large potential of wastewater agriculture for both helping and hurting great numbers of urban consumers.”

“And it isn’t just affluent consumers of exotic vegetables whose welfare is at stake,” she added. “Poor consumers of inexpensive street food also depend on urban agriculture.”

Consumers across the 53 cities said they would prefer to avoid wastewater produce. But most of the time, they have no way of knowing the origin of the products they buy. Farmers, too, are aware that irrigating with wastewater may pose health risks both for themselves and the consumers of their produce, but they have little choice, since safe groundwater is seldom an accessible alternative, according to the IWMI report.

Few developing countries have official, enforceable guidelines for the use of wastewater in agriculture. As a result, though the practice may be theoretically forbidden or controlled, it is in fact “unofficially tolerated,” the IWMI found.

The report highlights indigenous practices that can reduce the health risks from wastewater agriculture. In Indonesia, Nepal, Ghana and Vietnam, for example, farmers store wastewater in ponds to allow suspended solids to settle out.

The dried up bed of Kenya’s
Voi River (Photo credit unknown)

Countries lacking the means for adequate wastewater treatment can still reduce health risks through low-cost interventions, such as the use of drip irrigation and washing of fresh produce in clean water.

Of the world’s total water resources, 97.5 percent is salty and of the remaining but mainly frozen freshwater, only one percent is available for human use, said Leape, the WWF chief.

“Even this tiny proportion, however, would be enough for humans to live on Earth if the water cycle was properly functioning and if we managed our water use wisely,” he said.

But Leape warned the conference delegates that the world is a long way from being ready for a worsening water crisis in part because of climate change and lack of an ecosystem approach to freshwater management.

“Water management for human needs alone is damaging the natural systems we all depend on,” Leape said. “No management is even worse.”

“We are also concerned that the world continues to mainly discuss adaption to climate change rather than doing it,” Leape said. “We have been doing it, all over the world, and we have found that that improving the health of freshwater ecosystems now makes a great contribution to improving their resilience to climate impacts in the future.”

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