Water pollution

       Natural causes

1. Volcanoes
2. animal waste,
3. algae,
4. silt from flood

        Human causes

1. sewage
2. fertilizers and pesticides from farms
3. wastes from factories and construction sites
4. acid rain turn lakes acidic
5. oil spillage

         Effects

1. death of aquatic animals
2. disruption and food chain
3. diseases

          Solutions

1. garbage sorting
2. save water
3. not overuse pesticides and fertilizers
4. plant trees
5. intensify efforts to treat sewage
6. strengthen citizens’ awareness of water conservation

   Distribution in china

   The pollution of underground water is a serious problem. The Ministry of Land and Resources has released a report on the surveillance data of the country's land use and water quality. Surveillance was conducted on over 4,700 sites in 203 cities. Water quality in nearly 44 percent of the sites is bad.

   The Ministry of Environmental Protection also says around 280 million people have been exposed to unsafe drinking water. The ministry reports over 70 percent of water from lakes, and 60 percent of underground water across the country does not meet the national safety standard.

   Water shortage

   Distribution in china

   The country uses 600 billion cubic metres (21,200 billion cubic feet) of water a year, or about 400 cubic metres a person—one-quarter of what the average American uses and less than half the international definition of water stress

    Four-fifths of China’s water is in the south, notably the Yangzi river basin. Half the people and two-thirds of the farmland are in the north, including the Yellow River basin. Beijing has the sort of water scarcity usually associated with Saudi Arabia: just 100 cubic metres per person a year. The water table under the capital has dropped by 300 metres (nearly 1,000 feet) since the 1970s

    

   Experts

   “Water is the worst,” says Wang Tao, of the Carnegie-Tsinghua Centre in Beijing, “because of its scarcity, and because of its pollution.” “Water,” agrees Pan Jiahua, of the Chinese Academy of Social Sciences. “People can’t survive in a desert.” Wang Shucheng, a former water minister, once said: “To fight for every drop of water or die: that is the challenge facing China

    

   Causes

   1. uneven distribution of water resources
   2. water contamination
   3. water wastage
   4. overuse of water

   Effects

   1. die to thirst
   2. the economy is declining
   3. social unrest

   Solutions

   1. south water to north
   2. construction of water conservancy projects