Should water be purified?

Once it’s used, water is returned strongly deteriorated. It contains, infact, many polluting substances (for example leftovers of detergents used to wash dishes or clothes) or other organic substances (for example human excrements). In many countries (unfortunately not all yet) this water is gathered from the sewage system and sent to a purifier that eliminates or reduces at levels compatible with the health of the environment, concentration of polluting substances; water is finally poured again into natural water flows (rivers and lakes) to return into the sea.

Special reports

From the Multimedia section

  • water

    Map of water scarcity

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    water

    Availability of water resources

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    life

    Algae proliferation

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  • water

    Water and man

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    water

    Water and sustainability

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    water

    Components of the water footprint

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  • air

    The polar bear will become extinct

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    life

    Algae living in heavily polluted

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    air

    Desertification

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  • water

    Map of water scarcity

    Look

    water

    Availability of water resources

    Look
  • life

    Algae proliferation

    Look

    water

    Water and man

    Listen
  • water

    Water and sustainability

    Listen

    water

    Components of the water footprint

    Look
  • water

    Map of water scarcity

    Look
  • water

    Availability of water resources

    Look
  • life

    Algae proliferation

    Look

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