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Water pollution is the change in the worsening of the physical-Chemistry-Biology of water, with the appearance of the strange substance in solid, liquid water makes become toxic to humans and creatures. Reduced diversity of creatures in the water. In terms of the speed of propagation and scale effects, the water pollution issue is concern over soil contamination.Water pollution occurs when surface water flows through the garbage, garbage, industrial water contamination on the ground, and then seep down to the water table. Water pollution phenomena occur when the type of hazardous chemicals, the disease-causing bacteria, virus, parasite infections arise from different sources of emissions as of industrial waste from the factory, the garbage of the hospitals, the kind of normal garbage or chemicals , pesticides, organic fertilizers ... used in agricultural production are pushing out the ponds, lakes, rivers, streams or infuse into the water below the ground without going through the process or with the volume too large exceeds the ability to self regulate and self cleaning of the kind of pond, lakes, rivers, streams
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