EVERYDAY SCIENCE

Detailed explanation-1: -A point source is a single, identifiable source of pollution, such as a pipe or a drain. Industrial wastes are commonly discharged to rivers and the sea in this way.

Detailed explanation-2: -Point-source pollution is easy to identify. As the name suggests, it comes from a single place. Nonpoint-source pollution is harder to identify and harder to address. It is pollution that comes from many places, all at once.

Detailed explanation-3: -Point source pollution is pollution where the source of the pollution can be identified, such as a spill or discharge. Non-point source pollution is when the source of pollution either cannot be identified or may come from many sources.

Detailed explanation-4: -Point source pollution includes a variety of pollutants including nutrients, metals, biological material, bacteria, etc. Factories and sewage treatment plants are common sources of pollution through their discharged water (or effluent).

Detailed explanation-5: -Point sources include large facilities that emit a significant amount of air pollution during manufacturing, power generation, heating, incineration, or other such activity.