Water pollution

Water pollution is a very serious problem is China. There are three main causes, industry pollution, household waste, over-use fertilizer. The main cause for the industry pollution is the wrong develop concept which puts the economy development at first place, but pays less attention to the environment. So people pollute the environment to maximize economic benefit. And the government does not have very strict laws to punish companies who are polluting the environment. Another main reason for the water pollution is household waste. Waste cannot be fully dealt with because the technology can not catch up. Therefore, there is more and more rubbish thrown into rivers directly or put onto river banks without dealing with it. The third main cause for water pollution is over utilizing of fertilizer and organic nutrients. Over utilizing of fertilizer makes the populations of aquatic bacteria increase rapidly. The bacteria use too much oxygen in water to decompose the organic nutrients and that kills differ forms of lives in water and produces some kind of poisons which kills more life forms. The water pollution has a lot of seriously bad effects. Polluted water costs a lot to meet the standard for using and drinking. Polluted water affects the biodiversity, many kinds of animal species died out because of water pollution. The polluted water also causes very serious diseases. There are lots of reasons that lead to the water pollution, and water pollution brings a lot of trouble to people.