Water pollution is the contamination of water such as lakes, rives, oceans and ground water. It is one of the most serious type of pollution. It can have many different causes. Firstly, industrial waste is dumped in the lakes, rives by factories. Secondly, sewage is dumped by households. Moreover, farms use pesticides and herbicides to kill insets and weeds. Water pollution can have many effects such as outbreaks of cholera, death of aquatic animals or aquatic plants and damage to the environment. Water pollution has many negative both human and having thing. There fore, we should project sources of water.

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