Various types of chemicals used in modern agriculture such as inorganic fertilisers, pesticides and herbicides are also pollution-generating components. These chemicals are washed down to rivers, lakes and tanks. These chemicals also infiltrate the soil to reach the groundwater. Fertiliser induces an increase in the nitrate content of surface waters. Cultural activities such as pilgrimage, religious fairs, tourism, etc. also cause water pollution.

Sewage disposal, urban run-off, toxic effluents from industries, run-off over cultivated lands etc. are the source of which pollution?

Water pollution

Sewage disposal, urban run-off, toxic effluents from industries, run-off over cultivated lands and nuclear power plants are the sources of water pollution.