- 2072 Magh · 2 marks
Sources of water pollution
Short answer
Water pollution arises from domestic sewage (human waste, detergents), industrial effluents (heavy metals, acids, dyes), agricultural runoff (fertilisers, pesticides), mining and oil spills, thermal discharges from power plants, and other sources like radioactive waste and landfill leachate.
Explain the sources of water pollution.
- Domestic sewage: human waste, kitchen waste, detergents.
- Industrial effluents: acids, alkalis, dyes, heavy metals (Pb, Hg, Cd, As, Cr), oils and phenols, from tanneries and from paper, textile, sugar and chemical industries.
- Agricultural runoff: fertilisers (nitrates, phosphates), pesticides (DDT) and animal wastes.
- Mining and oil: acid mine drainage, oil spills.
- Thermal pollution: hot water from power plants and industries.
- Others: radioactive wastes, landfill leachate, siltation from soil erosion, religious and cultural offerings, municipal solid waste dumping into rivers.
✓ Answer checked by Claude Opus 5.5 (high effort)
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