What do you mean by cleaning of water?

Discussion in 'CBSE Class 7 Science Help' started by g mahesh, Nov 11, 2013.

  1. g mahesh

    g mahesh Member

    Cleaning of water is a process of removing pollutants from water before it enters a water body or is reused. This process of wastewater treatment is commonly known as sewage treatment. It takes place in several stages.

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