Mainly, water sources like rivers, ponds and lakes are polluted by the wastes.
Many of our lakes are becoming increasingly murky, smelly and choked with excessive growths of algae.
Most of the rivers have become darkened with sewage, chemicals, oil, industrial effluents and undesirable foreign and extraneous matter.
How to prevent water pollution essay - Dissertations, essays and research papers of top quality.
Clearing land for agriculture and urban growth often leads to water pollution.