Assertion : Sewage, industrial effluents and waste water are non-point sources of water pollution.
Reason : Surface runoff is point source of water pollution.

Answer

D

Explanation

Point source of water pollution is caused by discharge of effluents at one point. Non-point source of water pollution is caused by discharge of pollutants over a wide area. Sewage, industrial effluents and waste water are point source pollutants while surface runoff is a non-point source pollutant.