Question

write Four Points or state the harmful effects of untreated sewage please answer ​

Answer 1

Answer:

Untreated sewage contains many harmful microorganisms like bacteria, parasites, viruses and fungi. When dumped into the river untreated, it can potentially infect human beings with diseases such as diarrhoea, dysentery, cholera, typhoid and jaundice.

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Explanation:

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Answer 2

Answer:

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Explanation:

Life-threatening human pathogens carried by sewage include cholera, typhoid and dysentery. Other diseases resulting from sewage contamination of water include schistosomiasis, hepatitis A, intestinal nematode infections, and numerous others.