Cause of water pollution
1: Industrial Waste
One of the major causes of water pollution is the discharge of waste from industries. It is a common observation that industries find rivers and oceans a convenient place to dump their waste material into. The waste contains toxic substances and also includes elements like lead, mercury, nitrates and sulfates. They are quite harmful for humans as well as aquatic animals. A large amount of money is spent on treating the water bodies that get contaminated and making them suitable to use for drinking purposes again. Moreover, there are still risks of various diseases after consuming the water containing such toxic material. Often, hot or contaminated water is also released into the rivers from industries, which increases the overall temperature of the rivers, thus making them unfavorable for the aquatic flora and fauna to thrive.
This is another major cause that leads to the pollution of water bodies. Human settlements along the banks of rivers result in human and animal waste to be discharged into them. Sewage contains feces, urine and chemical wastes released by millions of people every day. The maltreated sewage is discharged in a wrong manner, besides there being leakages too. Sometimes, the sewage seeps through the ground and contaminates the groundwater. Instead of treating the sewage properly, most of the time, it is simply released directly into the sea or the rivers, thus polluting the marine life and habitat.
3: Vehicle Fuel
As the world continues developing, there has been a rise in the use of vehicles as well. There are millions of vehicles running on our roads and releasing toxic fumes of sulfates and nitrates every day. When released into the air, they come in contact with the water vapor present in the air, and become mild corrosive acids such as hydrochloric or sulfuric acid. They then return to the ground as acid rain. The acid percolates through the ground and mixes with the...