Tag Archive | "drought"

Water Shortage looms for China, India


NEW DELHI/BEIJING: A fight breaks out as student Vikas Dagar jostles with dozens of men, women and children to fill buckets from a water tank truck that brings water twice a week to the village of Jharoda Kalan on the outskirts of New Delhi.

Nineteen hundred miles away, near Xi’an in central China, power-plant worker Zhou Jie stands on the mostly dry bed of the Wei River, remembering when he used to fish there before pollution made the catch inedible.

Dagar and Zhou show the daily struggle with tainted or inadequate water in India and China, a growing shortage that the World Bank says will hamper growth in the two countries. It also is pitting water-intensive businesses such as Intel Corp.’s China unit and bottling plants of Coca-Cola Co. against growing urban use and the 1.6 billion people in China and India who rely on farming for a living.

“Water will become the next big power, not only in China but the whole world,” Li Haifeng, vice president at sewage-treatment company Beijing Enterprises Water Group, said in a telephone interview. “Wars may start over the scarcity of water.”

About 2.4 billion people live in “water-stressed” countries such as China, according to a 2009 report by the Pacific Institute, an Oakland, California-based nonprofit scientific research group. Water scarcity and pollution reduce China’s gross domestic product by about 2.3 percent, the World Bank said in a 2007 report.

Water demand in the next two decades will double in India and rise 32 percent in China, according to the 2030 Water Resources Group, a research collaboration between the World Bank, management consulting firm McKinsey & Co. and industrial water users such as Coca-Cola.

China’s 1.33 billion people each have 2,117 cubic meters of water available per year, compared with 1,614 cubic meters in India and as much as 9,943 cubic meters in the United States, according to the Food and Agriculture Organization of the United Nations. The 1.2 billion people in India, where farmers use 80 percent of available water, will exhaust their fresh-water supplies by 2050 at the current rate, the World Bank estimates.

For Dagar, 21, and the 200 other villagers in Jharoda Kalan, that dearth is already a daily fact of life.

“This is for our drinking and cooking,” he said, pointing to four bucketfuls he won from the fight. “I’ve been waiting for the past hour.”

Southwest China had its worst drought in a century this year, prompting Premier Wen Jiabao to say that the country would face a test to meet its grain output target. The drought affected 24 million people and 16 million acres of arable land, Liu Ning, vice-minister of water resources, said on March 31.

China, with 20 percent of the world’s population and 7 percent of its fresh water, has contaminated 70 percent of its rivers and lakes, while half the cities have polluted groundwater, according to the World Bank. By 2030 China will have a supply shortfall of 201 billion cubic meters unless the government takes steps to control demand, McKinsey partner Martin Joerss in Beijing wrote in an April report.

The Wei river was rated “severely polluted” by the government in 2009, according to a March 2 report in state-run China Daily. That’s forced Zhou to fish instead in pools near the river. The river level has dropped by about three-quarters in some places in the past decade, he said.

The pollution and shrinking rivers are partly a result of China’s rapid industrialization. Economic growth accelerated to 11.9 percent in the first quarter, the fastest pace in almost three years. It is set to reach 10.5 percent this year, according to some estimates.

“China can solve this problem in a way that creates economic value as opposed to economic cost,” said Joerss in an interview. “There is tremendous, though largely untapped, opportunity to meet China’s enormous need for water resources by focusing on better managing demand.”

“Water is a resource under great pressure in China and globally,” said Kenth Kaerhoeg, a spokesman in Hong Kong for Coca-Cola Pacific, which has water recovery systems at its 39 plants in China to reduce consumption. “Economic development, climate change and population growth will increase pressure on freshwater resources in China.”

In March, a panel from the southern Indian state of Kerala recommended suing Coca-Cola bottler Hindustan Coca-Cola Beverages for $48 million damages for contamination and “serious depletion” of water in the town of Palakkad. In an April 26 e-mail, the company denied that its plant, shut since March 2004, depleted or tainted the town’s water.

In both China and India, fresh water reserves are unevenly distributed.

Northern China, with cities including Beijing, the capital, has less than a fifth of the country’s fresh water and almost half the population, the World Bank said.

Former Chinese leader Mao Zedong, who began trying to address the water issue as early as the 1950s, conceived the South-North Water Diversion Project to carry water along three routes from the Yangtze River to the Yellow River. Construction began in 2003 and has cost more than $5.8 billion so far. The completion date has been pushed back four years to 2014 as costs and environmental concerns mount.

Government proposals in India were no less ambitious. Former Prime Minister Atal Bihari Vajpayee in 2003 appointed a panel to assess building a series of dams and canals that would link rivers to control floods and curtail shortages. The 5-trillion-rupee plan was shelved after protests from environmentalists.

Instead, India has concentrated on conservation. The government has made it mandatory for new houses and condominiums in cities to collect rainwater in water tanks in an effort to curb a decline in groundwater levels.

The Congress-led coalition is also implementing a six-year-old plan to replenish about a million lakes, ponds and water tanks. About 60 percent of India’s arable land still depends on the annual monsoon.

“Water availability has declined to such an extent that many parts of India today face a drought-like situation,” said Sushmita Sengupta, research associate at the Center for Science and Environment in New Delhi.

The two countries’ plans don’t always mesh.

When China dammed the Mekong, the largest river flowing into Southeast Asia, Thailand, Vietnam, Cambodia and Laos all called for greater cooperation to prevent droughts and floods. China also plans a dam in Tibet on the Yarlung Zangbo, the highest major river in the world, which flows into India as the Brahmaputra.

The project would give Beijing control of the water supply to more than 90,000 square kilometers of land controlled by India while China claims sovereignty.

“Water scarcity is probably one of the biggest risks for investors in China and India,” said Lucy Carmody, executive director of Singapore-based investor advisory firm Responsible Research. “There is a lot of potential for border conflicts.”

Arab News -  By Bloomberg

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Fog Project boosts water supply


A climatologist from the University of South Africa (Unisa) has helped develop a low cost, eco-friendly system to harvest moisture from abundant mountain fog in a water-scarce region of the Eastern Cape, and communities there are already benefiting from it.

The project was successfully launched in Cabazane Village, in the rural Mount Ayliff area in the north of the province, in mid-March 2010 during the annual National Water Week.

The area, which falls in the picturesque Alfred Nzo district municipality, is bordered to the north by the mountain kingdom of Lesotho and much of the terrain is steep and remote, with very cold winters and mild summers. Fog is a frequent visitor and a ready source of clean water.

Professor Jana Olivier of Unisa’s School of Agriculture and Environmental Sciences has spent the past 20 years specialising in the properties and hazards associated with fog, especially for vehicles.

She later started delving into the technique of fog harvesting. “We got funding from the Water Research Commission, and we designed the fog water system,” she said.

Olivier teamed up with Professors Johan van Heerden, Hannes Rautenbach and Tinus Truter – all of Pretoria University – in the development of the system.

Unisa is involved in ongoing research into water harvesting from fog, especially for isolated rural communities, where water is scarce and villagers often have to walk vast distances to fetch a few litres at a time.

However, the system is only practical where fog occurs for at least 40 days a year, and for a period of several hours at a time.

The project has also been rolled out in other dry areas of South Africa, including Venda, Limpopo, and the West Coast, but Mount Ayliff’s persistent fog yields the best results, producing hundreds of litres of water a day.

“The West Coast and the mountainous areas – stretching from the Soutpansberg in the north, along the Drakensberg in the east to the Cape Mountains in the south – have the highest fog harvesting potential,” said Olivier.

Mount Ayliff is located in the Umzimvubu local municipality, one of two municipalities within Alfred Nzo – the other is Umzimkhulu. Umzimvubu’s population is just 198 550, of which only 4% live in towns – the rest live in rural areas.

Safe drinking water is a continual problem as the area lacks essential infrastructure, including water on tap. Villagers are often forced to dip into natural springs, running the risk of picking up water-borne disease.

“We have a challenge … because about 40% of our community here does not have basic water,” said Alfred Nzo mayor Gcinikhaya Mpumza.

However, the villagers’ lives have changed with the installation of the water-harvesting system and its inexhaustible supply. No electricity is needed to power the scheme, which makes it eco-friendly and low-cost, and suitable for areas with no power infrastructure.

Because the technology is simple, the equipment does not need special maintenance. The system consists of a double layer of 30% shade cloth nets stretched between steel cables supported by posts, with a gutter beneath each screen to catch the run-off. All components are readily available in the area.

The Cabazane set-up involves around 700 square metres of netting, said Olivier, with each square metre of shade cloth yielding up to five litres of water a day – depending on the weather.

Water droplets in the fog are trapped on the nets. They get bigger and heavier as the fog rolls along, and eventually run down into the gutter and from there through a filter into storage tanks. The system works best when the wind is blowing, because the fog moves over the nets more rapidly.

The system is installed up on the mountain slope, where nothing more than gravity is needed to get the drops flowing into the tanks. Reports say that about 30 homes in Cabazane Village have already benefited from the project.

The quality of water is described as “very high”, falling within the World Health Organisation’s standards for potable water. “The water is incredibly pure because it comes from the clouds,” said Olivier.

Innovative schemes like the simple and cost-effective fog harvester are well-suited to South Africa, as it’s one of the driest countries in the world, with annual rainfall well below the global average.

Source: MediaClubSouthAfrica.com


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Desalinated sea water for Cape Town in four years


The energy required to power desalination would drive up the price of water, and consume more non-renewable energy, the price of which is rapidly being felt by South African electricity users. Water Rhapsody provides a means to save up to 90% of your municipal water bill with our water conservation systems. here follows the article in Cape Times today

By Melanie Gosling Environment Affairs Cape Times

Capetonians could be drinking desalinated seawater in four years’ time when our growing demand for water will have exhausted current supplies.

And because desalination is expensive, the cost of Cape Town’s water will increase.

This emerged at a pre-budget briefing yesterday where Water and Environment Affairs Minister Buyelwa Sonjica said her department was “forging ahead with unconventional supplies” of water, which included desalination of sea water in coastal towns.

“My view is that desalination must be seen as one of the sources for water supply… We have a coastline of 3 000km. We don’t have enough water and we are facing climate change. “So in future this is a technology South Africa will need,” Sonjica said.

The Berg River was the last available river in the Western Cape that could be dammed to provide water for the city.

But the Berg River Dam, the newest of the province’s dams, will meet Cape Town’s growing water demand only until 2014.

Asked what the plans were to augment Cape Town’s supply after 2014, Sonjica said this would be addressed in the national water review strategy.

Sonjica’s deputy director-general, Cornelius Ruiters, added: “One of our options for increasing supply to Cape Town is desalination. This will increase the cost of water, but is the only viable option.”

He said Water Affairs was in discussion with the City of Cape Town about the best option for desalination plants to supply the city, “and the cost implication for the City of Cape Town”.

Ruiters said the department was also looking at using water from Voelvlei Dam, and using more water from the Breede River.

“Using underground water from the Table Mountain aquifer is also an option,” he said.

Sonjica said studies suggested that South Africa was using less than 30 percent of ground water resources.

Referring to the dedicated environmental courts that her department wanted to establish to prosecute environmental crimes, Sonjica said they would begin running as a pilot project next month.

“Four in total have been approved for now,” she said. One of these would be in the Western Cape.

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