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When
the Tap Runs Dry
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Thousands
of Chinese farmers in the Shandong province rioted in the
summer of 2000 when officials cut off water flowing from a
leaky dam. What factors have made water supply a critical
issue around the world?
Samuel Taylor Coleridge wrote the lines: "Water, water, everywhere, Nor any drop to drink" in his epic poem, The Rime of the Ancient Mariner. He probably didn't imagine that he was describing a situation that within two centuries would become daily reality for more than a billion people.
In September 2000,
the United Nations Environment Programme (UNEP) released its
Global Environment Outlook 2000 (GEO-2000), the most authoritative
assessment ever made of the growing environmental crisis worldwide.
The report, authored by 200 leading scientists from 50 countries,
identified a shortage of clean water as one of the most urgent
problems facing humanity.
According to the report, 20% of
the world's population lacks access to safe drinking water.
Each year, water-related diseases kill 15 million children
under the age of 5. If action is not taken, by the year 2025,
two-thirds of the world's population will live in areas with
unstable water supplies.
The global water problem is the result of several factors, most prominently the growing population. More people means more demand for water for domestic, agricultural, and industrial use. The growing population must eat. Agriculture accounts for about 70% of water usage. Production of a ton of grain requires roughly 1,000 tons of water.
Uneven distribution is also a factor. For example, Africa's Niger Delta receives significant quantities of rain, while the nearby Sahara Desert gets very little. According to GEO-2000, there are 50 African rivers that provide water to two or more countries. The potential exists for armed conflict when the demand for water from these rivers outgrows the supply.
Even when there are adequate water
supplies, the water is not necessarily safe to drink. Sewage
is a serious threat to water sources. In developing areas,
sewage systems are often primitive, and sewage flows into
rivers. In developed areas, deteriorating sewage systems can
lead to contamination of water supplies. Water quality is
also affected by use of pesticides and fertilizers, and by
industrial waste.
A large unknown in the future of water resources is the impact of human activity on the climate, and how these climatic changes will affect water supplies. Rising temperatures affect evaporation-precipitation cycles. Scientists believe that global warming will cause extreme drought in some areas and more flooding in others.
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Water
is a global problem, not one limited to developing countries.
In the United States, water distribution, water pollution,
and high water consumption are all causes for concern. For
example, drought across the Southwest in 2000 caused many
municipalities to impose restrictions on water use for chores
such as watering lawns and washing cars. In Throckmorton,
Texas, water levels in the town reservoir dropped from 23
to 7 feet, and there was a real threat that the water taps
would run dry.
In 1992, seven western states signed an agreement for sharing the Colorado River. According to the agreement, California is entitled to the water from 4.4 million acre feet. Over the past decade, California's usage has averaged 5.2 million acre-feet. Typically, the shortfall was taken from water allotted to Arizona and Nevada. With Phoenix, Arizona, and Las Vegas, Nevada, among America's fastest-growing cities, these states no longer agree to send their surplus water to California. The state of California is working on a plan to reduce its reliance on the Colorado River.
According to the Environmental Protection Agency (EPA), a majority of Americans live within 10 miles of a polluted body of water, be it a lake, river, stream, or beach. All of America's "Great Waters"the Great Lakes, Chesapeake Bay, Lake Champlain, and the coastlinesall suffer from pollution and runoff.
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Think about where your community gets its drinking water. Does it come from groundwater pumped from wells or from surface water, such as a lake, reservoir, or river? If you don't know the answer, visit
Surf Your Watershed, where you can find not only the source of your drinking water, but also details on your local watershed, reports of contamination, etc.
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You Can Make a Difference
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Every individual can have an impact on water conservation. Consider these facts:
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Running the water while you brush your teeth can use up to 35 gallons of water a week per person.
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Showers use an average of 5 to 7 gallons per minute.
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A leaky faucet drips about 150 gallons of water a week .
Examine how you use water throughout the day, in the kitchen, in the bathroom, in the laundry room, and outside your home. Make a list of 10 things that you can do to save water. For example, a toilet displacement device can save about 5 gallons per flush.
(If you need some help with ideas, visit the EPA's
Office of Water.)
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Approximate # Gallons Saved
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By changing your habits, approximately how many gallons of water can you save weekly?
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If all 270 million U.S. residents saved a similar amount, how much water would be saved weekly?
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Water Management for the Future
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According to Fortune
magazine, "Water promises to be to the twenty-first century
what oil was to the twentieth century: the precious commodity
that determines the wealth of nations. How a country handles
its water problem could spell the difference between greatness
and decline."
GEO-2000 believes that water management is linked to land issues, and that the two must be approached together. The report outlines the following points for water management programs:
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coordination of the management of land and water resources
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establishment of secure land and water property rights where they do not already exist
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reorganization of policies at the river basin level
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introduction of concepts of shared and equitable water use and alternatives to use of marginal land
Another group
looking at water management is the World Conservation Union
(IUCN), an umbrella group of environmental agencies and institutions.
At a congress held in Amman, Jordan, in October 2000, the
group announced the launch of a $30 million Water and Nature
Initiative, which will fund 24 projects to help communities
develop and maintain sustainable water resources. The first
two projects will be in El Salvador and Vietnam.
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A technology that provides water in arid and densely populated areas is desalinationremoving the salt from saltwater so that it is drinkable. Desalinated water is used widely in the Caribbean, the Middle East, North Africa, and even the southeastern United States. Desalination is an expensive process, but new developments are reducing the price at the same time that demand for water is growing. Considering that 97% of Earth's water is saltwater, this process could make a difference in many people's lives.
Some cities around the world are taking a different approach to water management: they are licensing it out to private companies. In the early 1990s, Buenos Aires, Argentina, suffered a water crisis when the city didn't have the income to fix the deteriorating pipes and pumps of the city water system. The poor had to buy water from vendors who sold this basic necessity from the backs of trucks at exorbitant prices. The city licensed the water system to a private French company, Suez Lyonnaise des Eaux, which restored the water systemat lower prices.
- Of the 55,000
water companies in the United States, 6,000 are privately
owned. What percentage of U.S. water companies are privately
owned?
The Middle East is recognized as one of the problematic areas with insufficient water resources. As part of the peace treaty between the two countries, Israel sells a guaranteed quantity of water to Jordan annually. Water rights have been an issue in negotiations between Israel and both Syria and the Palestinians. After several years of drought, Israel's water resources are running low, and the country is examining the possibility of importing water from Turkey, a country with ample water supplies.
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