Question

In which way can sewage be harmful to us?

Answer 1

Proper sewage disposal is critical, as releasing untreated sewage into rivers and other water bodies can have several harmful effects:

1. It can spread waterborne diseases, as the sewage contains harmful microorganisms that contaminate the water.
2. It can lead to a decrease in dissolved oxygen (DO) levels in the water, which may result in the death of aerobic aquatic organisms due to lack of oxygen.
3. It produces a foul and unpleasant odour, making the environment unhygienic and uncomfortable.