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Causes of water pollution

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Water pollution is the contamination of water bodies including rivers, oceans, lakes, streams, aquifers, and groundwater. It occurs when foreign harmful materials like chemicals, waste matter, or contaminated substances are directly or indirectly discharged into water bodies. Any alterations in the chemical, physical, or biological water properties qualify as water pollution. It is usually a requirement for any harmful substances or compounds to undergo treatment before they are discharged into water. Human activities are the primary contributors to the introduction of these foreign harmful materials. Water is the second most polluted environmental resource after air pollution.
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Causes Of Water Pollution In China

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Sources and Causes of Water Pollution That Affect Our Environment - Conserve Energy Future

However, its scarcity and pollution cause millions of people to have poor access to this much-needed asset. Humans are the main cause of water pollution, which is triggered in many ways: by the dumping of industrial waste; due to temperature rise, that cause the alteration of water by reducing the oxygen in its composition ; Or due to deforestation, which causes sediments and bacteria to appear under the soil and therefore contaminate groundwater. In the same way, the pesticides used in agricultural fields filter through underground channels and reach the consumption networks; And also as a result of accidental spillage of oil. What are the main consequences of water pollution? Firstly, the disappearance of biodiversity and aquatic ecosystems. Also, humans are harmed by the alteration in the food chain and by contracting illnesses when drinking or using contaminated water.
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Water Pollution: Everything You Need to Know

Abstract This scientific report mainly discuss how to reduce the water scarcity in the China, and the two main reasons for water scarcity are water pollution and its uneven distribution. For this research, some information form internet and the data collected in the website are the main sources for this topic. There is a personal hypothesis that human could explore more techniques associated with the dam, because dam can change the water direction and save the energy, and there are two graphs explaining the map of water distribution and terrestrial circumstances.
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Groundwater pollution occurs as a result of the release of pollutants into the ground to natural underground water reservoirs known as aquifers. Once the pollutants released to find their way into groundwater , they cause contamination. It is a type of water pollution that is mainly caused by the release of substances either intentionally or accidentally through anthropogenic activities or natural causes. The pollutants usually move within aquifers depending on biological, physical, and chemical properties. Processes such as diffusion, dispersion, adsorption, and the speed of moving water often facilitate the movement.
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