Question

what is sweage?explain why it is harmful to discharge untreated sweage into rivers or seas

Answer 1

Sewage is the wastewater containing both liquid and solid wastes produced by human activities from homes, industries, hospitals, offices, etc. Sewagecontains various contaminants including disease-causing bacteria and other microbes if it is sent into the seas and rivers the water may get contaminated..........
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Answer 2

Hii dear here is your answer.

Sewage is a liquid waste consists of wastewater from houses, offices, factories, hospitals etc. It is a complex mixture containing suspended solids, organic and inorganic impurities, nutrients, saprotrophic and disease causing bacteria other microbes.

If the untreated sewage is discharged into rivers and seas, it will cause water pollution and soil pollution, in which both the surface water get polluted. Ground water is a source of water for wells, tube wells, springs, and many rivers. Therefore, if it gets polluted, it becomes the most common route for water-borne disease like cholera, typhoid, polio, meningitis, malaria, dengue etc.

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