Question

How is water polluted ?

Answer 1

Water pollution is the contamination of water bodies. This form of environmental degradation occurs when pollutants are directly or indirectly discharged into water bodies without adequate treatment to remove harmful compounds.

Answer 2

Once a pollutant enters a water supply, it is difficult to get rid of it. Some pollutants slowly break down into harmless chemicals. Once the input of pollution is stopped, the pollutant gradually travels downstream and is replaced by unpolluted water. The problem is that it usually takes a long time for pollution to clear up in that way.