Water contamination is a serious form of pollution, and one that can be challenging to rectify.

There seem to be two main causes involved, and a variety of damaging

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on people and the biosphere, which we will discuss here. Probably the main factor is the issue of emissions from cars, factories, and other human activities. These emissions contain damaging pollutant particles which can contaminate rainwater run-off and

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enter the

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cycle, by transferring through the

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table into aquifers, streams, and rivers. Filtration and processing are not really viable options for

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large volumes of

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, and so the

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table remains tainted with these elements over long periods, as we see in Eastern Europe today. In situations where soil erosion and logging have already damaged the local environment, the accumulation can be very serious. The other major cause is the accidental or deliberate dumping of waste products in places outside of controlled landfills or waste processing centres. Even small amounts of abandoned waste can enter

water

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supplies through the ground, often undetected. The

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on animal life can be severe, especially for species that are already endangered by

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threats as poaching, habitat loss, and food chain disruption. Contaminated

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can lead to dwindling numbers or even potential extinction, as may indeed happen to the Asian tiger populations. The impact on human society can

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be distressing, including the poisoning of drinking

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, famine or drought due to lack of safe irrigation, and long-term loss of land as we see,

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, after the Bhopal poisoning catastrophe in India.

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effects

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tend to have an especially grave impact on the very poorest in society, with the least resources to counter the environmental

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. Overall, we see that emissions and dumping are the main origins of the problem and that the

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on both humans and animals are exacerbated by the existing environmental, criminal, or social problems.