Which of the following is NOT the reason for water pollution in our country?

Combustion of coal

The correct answer is Option (4) → Combustion of coal

• Decomposition of plants and animals releases organic matter into water, causing pollution.

• Industrial wastes often contain chemicals and toxins that pollute rivers and lakes.

• Domestic wastes like sewage and detergents also lead to water pollution.

• Combustion of coal, however, mainly causes air pollution (through release of CO₂, SO₂, NOx, and particulate matter).