Question

What are the causes of water pollution?

Answer 1

1. Industrial waste:

• Industries produce large amount of waste materials such as toxic chemicals and pollutants such as lead, mercury, sulphur, asbestos, nitrates and many other harmful chemicals.
• Improper waste management system and the disposal of waste into the fresh water causes water pollution.

2. Sewage and waste water:

• The sewage water produced by each household carries harmful bacteria known as pathogens which causes deadly diseases.

3. Accidental Oil leakage:

• Oil spills poses a great threat to the marine wildlife as large amount of oil does not dissolve with water.

4. Chemical fertilizers and pesticides:

• Chemical fertilizers and pesticides used by farmers to protect crops from pests are useful for the plants growth.
• But when it rains, these chemicals mixes up with rainwater and flows down into rivers and canals which pose serious damages for aquatic animals.

5.Radioactive waste:

• The element used in production of nuclear energy is Uranium which is a highly toxic chemical.
• The nuclear waste produced by the radioactive material can have serious environmental hazards if not disposed off properly.
  

6. Leakage from the landfills:

• Landfills are huge piles of garbage seen across the city that produces awful smell.
• During rainy season, the landfills may leak that can pollute the underground water with large variety of contaminants.