Question

Human activities commonly affect the quality of water resources. Pollutants enter the water environment from two main types of sources: non-point and point sources. Non-point sources are often called diffuse pollution because the inputs and impacts occur over a wide area and are not easily attributed to a single source. Agriculture contributes to non-point water pollution sources, including pesticides, fertilizers, animal manure, and soil washed into streams in rainfall run-off. The diagram you see here illustrates a single-point source of pollution and how it moves through the area surrounding the point. Which choice is NOT an example of point-source water pollution?
Responses
A landfill seepagelandfill seepage
B stormwater runoffstormwater runoff
C fluid storage tanksfluid storage tanks
D discharge from sewage-treatment plants

Answer 1

B. stormwater runoff

Stormwater runoff is an example of non-point source pollution because it comes from a wide area and is not traceable to a single location. In contrast, the other options—landfill seepage, fluid storage tanks, and discharge from sewage-treatment plants—are all examples of point-source pollution, as they originate from specific, identifiable locations.