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slide2

Water - structure

many-sided

Water, oxide hydrogen, H20, the elementary steady in usual conditions a chemical compound of hydrogen with oxygen (11,19 % of hydrogen and 88,81 % of oxygen on weight), molecular weight 18,0160; a colorless liquid without a smell and taste (in thick layers has bluish color).

  • The main about water.
  • Water cycle.
  • The statesof water.
  • Water and people
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1970WARNING SIGNS

In 1970, water consumption worldwide was half what is today. With 80% of all sickness in the developing world linked to polluted water, and with populations sharply on the rise, the urgency of water management became apparent.

2003DRY AND DIRTY

Over 1,3 billion people have no access to clean water. At least 2,2 million people die annually from diseases related to poor sanitation and contaminated drinking water –that is about 10,000 deaths from bad water (or no water) each day.

2025PARCHED POPULACE

The United Nations estimates that the world is per capita water supply will drop by 1/3 in the next 20 years. The worst strain will be in Africa and the Middle East, where populations are growing fast and rivers are running dry.

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60%

13%

13%

8%

6%

1%

Asia S. America N.America Africa Europe Oceania

EVERY MINUTE, 7 PEOPLE DIE FROM BAD WATER OR NO WATER!

About 2 million tons of waste are dumped every day into rivers, lakes and streams. One liter of wastewater pollutes about eight liters of freshwater.

WATER FOR THE PEOPLE

Population and water distribution don’t always correspond, often leaving highly populated regions with little access to water. This is most true in Asia, which has support 60% of the world’s population with only 36% of the world’s water.

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