Causes and Effects of Water Pollution

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70 % of our Earth surface is covered by water and almost 60% of the human body contain water for nutrient transportation. The unique characteristic of water is water molecule is the only substance in this Earth that exist in all three physical states of matter which are solid, liquid and gas. All human beings need water to survive. The national development over the years cause the rate of water pollution increased. According to Gebre & Rooijen (2009) water pollution can be considered as a sign that derives from economic growth and is a common phenomenon in urbanized cities in developing countries. In general, there are three main issues that related to water pollution which are the causes, effects and the way to decrease this problem.
What makes water pollution occur? Firstly, urbanisation in which people move to the big cities can cause physical disturbance on land due construction of houses, industries, roads, etc. According to Mohan Rao,1971; CPHERI, 1972 water pollution occurs when there is a removal from the industrial sector, emissions from municipal waste, and elimination of defective products affect water quality. In addition to construction works, chemical pollution from industries and mines are also contributing to even worsened water pollution. Over population in certain cities causing inadequate sewage collection and treatment with unmanaged litter, plus increase in fertilisers to grow more food. This results in an increase in nutrients (nitrates and
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