what is sewage? why is it harmful to release untreated sewage in water?
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Sewage is a liquid containing wastes which is disposed by households, industrial and agricultural activities in water. It is harmful to discharge untreated sewage into rivers or seas because it can pollute the whole sources of water. Sewage contains harmful substances and disease causing organisms. It is therefore dangerous to release untreated sewage in water.
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sewage is the waste produced .it is harmful ti release sewage in water because it pollutes water and the organisms die.
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