Question

Difference between point and nonpoint sources of water pollution table

Answer 1

Some of the major differences between point and nonpoint sources of water pollution are as follows:

Point Source of Water Pollution:
1. It is pollution caused by discharge of effluents at one point.

2. Due to large scale entry of pollutants at one point, the contamination and harmful effect on quality of water is maximum.

3. Treatment plant can be installed in the area of flow of effluents.

4. Other type of control measures are not required.

Non-point Source of Water Pollution:

1. It is pollution caused by discharge of pollutants over a wide area.

2. There is some dilution of the effect of pollutants due to large size of area.

3. Treatment plant is useless for this type of pollution.

4. Control measures are required on a large scale for non-liberation of pollutants.

Answer 2

Nonpoint source pollution is unlike pollution from industrial and sewage treatment plants, comes from many diffuse sources NPS pollution is caused by rainfall or snowmelt moving over and through the ground.
Point source of pollution is a single identifiable source of air water and thermal noise or light pollution water pollution from factories power plant, municipal sewagefor treatment plant & some farms.