Therefore, many ponds and rivers in Hanoi were badly contaminated. Noteworthy is the Lake in the Park Alone, be considered as waste water containers of Hanoi with more than 50% of the amount of waste water. Many rivers in the South of the city as the river and the river of Taurus are also located in such pollution. The people in this area not only do not have enough clean water for the needs of living that their living conditions are also a serious threat
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