Water pollution

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  • Publicado : 6 de abril de 2013
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Natural Resources: Water Pollution
Nowadays the entire world has a range of environmental problems which concerns scientist, environmentalists and common people who care about the Planet. And, to behonest, it should concern everybody who lives in.


Although it covers 70% of the Planet Earth, this immeasurably essential to life resource, is not enough already to meet population needs.Scientists estimate from the total water in the Planet, nearly to 97, 3% represents saltwater and just 2, 7% freshwater, from these, merely 0, 4% corresponds to rivers and lakes water and is being used forhuman consumption. Brazil owns 13, 7% of the Planet’s freshwater and unfortunately Brazilians seem do not care about this vital resource.
The launch of debris in the water contributes to the“dead-zones”, which is characterized by a lack of Oxygen and excess of Nitrogen and Phosphorus. This scenario is each day more common in Brazilians rivers and favors the process called “eutrophication”, thatmeans excessive growth of algae, which consume nutrients (Nitrogen and Phosphorus) and benefit the appearance of microorganisms who waste the oxygen in the water. Moreover, algae come into thedecomposition process and release fatty acids, contaminating the environment.
Another huge public health problem is the toxic substances which reach the water’s body, as: heavy metal, endocrine disruptors andradioactive components, that can contaminate people, get them to death. The lack of sewage treatment also contributes to the water pollution, as soon as wastewater drains to the river, brings organicmatter and microorganism which increase the pollution and the eutrophication process.
A major concern is the lack of water in the near future. As result of it, communities will not have enoughwater to survive. Estimative of UN is that 2,2 billions of inhabitants will suffer with that, some of than already do, for instance the Middle East’s wars are all about water and power.
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