what is it necessary to treat the sewage before it is discharged into the rivers very short
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what is it necessary to treat the sewage before it is discharged into the rivers very short
what is it necessary to treat the sewage before it is discharged into the rivers very short
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Answer:
Sewage water contains harmful substances. ... So, when sewage is discharged untreated into rivers or seas, it becomes dangerous for aquatic plants and animals. Therefore, it is necessary to treat sewage before disposing it off in a water body as it can cause harm to human and aquatic life.