Question

What is sewage? Explain why it is harmful to discharge untreated sewage into rivers or sea? [in short]​

Answer 1

Answer: Sewage is a domestic water waste cause by community, homes, and industries.

Explanation:

It is harmful to discharge untreated sewage waters into river.

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.

Answer 2

Answer:Sewage is a mixture of very harmful organisms that can cause diseaseand it comes through all house waste material are presented in sewage.

Explanation:

It is harmful to discharge sewage in river because it can causes diarrhea, typhoid like disease.