Rajesh

          Water pollution is the contamination of water sources by substances which make the water unusable for drinking , cooking, cleaning, swimming, and other activities. Pollutants include chemicals, trash, bacteria, and parasites. Thus, waste dumped in a vacant lot can eventually pollute a water supply.           Destruction of biodiversity. Water pollution depletes aquatic ecosystems and triggers unbridled proliferation of phytopla nkton in lakes — eutrophication . Causes of Water Pollution. the physical disturbance of land due to construction of houses, industries, roads, etc. chemical pollution from industries, mines, etc. Contaminated water can harbor bacteria, such as those responsible for diarrhea, cholera, dysentery, typhoid, hepatitis A, and polio . According to the U...