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1. It makes water unfit for drinking.
2. It causes a bad odour.
3. Untreated sewage contains harmful microorganisms that can cause diseases such as cholera and typhoid.
4. It causes the migration of aquatic organisms.
5. Nose irritation and general discomfort are caused by polluted water.
6. Swimming, fishing, and other sporting activities may be difficult in polluted water.
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