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Water pollution usually occurs when a water body gets contaminated by different materials which are usually not present in it and which are harmful in nature. So in such a situation the water body is no longer useful for its intended use and hence is termed as polluted. If we consider the case of pollutants, there are two variants of water pollution. They are called as point source and non point source. Point sources of pollution happen when harmful substances are emitted directly in the water body and non point sources are those which deliver pollutants indirectly usually through environmental effects. It is generally regarded that water pollution which arises from non point sources are usually difficult to deal and ironically these are the ones which account for a majority of the contaminants in water bodies like streams and lakes. In order to understand the whole scenario clearly lets give a brief introduction to causes of pollution. We all know that there are many elements which cause pollution. Some of the important ones are sewage and fertilizers. These are dangerous because they contain nutrients like nitrates and phosphates. The main problem is that these nutrients stimulate the growth of aquatic plants and excessive growth of these organisms clogs the waterways. They also block light to the deeper section of the water body and this affects fish and other living organisms. Pollution is also caused when silt and other suspended solids, such as soil, construction and logging sites, urban areas, and eroded river banks when it rains. Normally, lakes, rivers, and other water bodies undergo Eutrophication, an aging process that slowly fills in the water body with sediment and organic matter. When these sediments enter various bodies of water, fish respiration becomes impaired, plant productivity and water depth become
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Composts and other organic amendments also raise the organic content levels in soils intrinsically poor in organic matter. Further, the recycling of waste materials in the form of organic soil amendments helps to resolve several problems related to practical, resource-recovery, environmental and economic issues arising from the disposal of large amounts of organic wastes.
The prime sources are burning fuels, for example , petrol or diesel in a car engine, or natural gas when it is burned at homes for central heating or at a major scale, in power stations (Harrison 2001, p. 179). Naturally, though, it is formed by the electrostatic reaction of lightening and by plants and other vegetation.
Since all living things are made of carbon, the carbon cycle is essential to life. Plants obtain carbon atoms and other important elements from the atmosphere through the process known as photosynthesis. The carbon-engorged plants are consumed by animals that eat plants, thus obtaining carbon atoms for themselves.
The human diseases caused by water pollution include cholera, typhoid, dysentery intestinal helminthes, jaundice and f ever. (Tripath A.K, 2009)
Pollution occurs in many ways. First type of water pollutant is putrecible organic materials.
He mentions the stop-gap measures that the local and national government has taken in order to help curb the problem. In the end, he reminds his readers that water pollution is a problem that affect us all, regardless of how far away the water
Even though this fact is recognized by humans, they disregard it by polluting lakes, rivers, oceans and seas. Water pollution causes many problems which includes diseases and killing of fish. Polluted water is also detrimental to human beings and animal life. The thesis will contend that water pollution comprises thermal pollution, industrial effluent and flooding.
The research in the article correctly assesses the sources of water pollution and effectively applies the methodology in the case of insufficient data and resources. The data obtained is useful for implementing the necessary management options to counteract the pollution effects in Lake Victoria.The research gives room for future research into parameters to reduce the uncertainty and help rehabilitate the lake fully
Food supplies and provision of adequate food are problems that currently affect the human population because of lack of access clean and fresh water. It means different countries are unable to suggest preventive measures to safeguard humanity from succumbing to the dangers posed by both water shortage and its eventual pollution.
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