What is an example of point source pollution?

Point source pollution refers to contaminants that are discharged from a single, identifiable source, allowing for easier identification and regulation. The discharge of waste from a manufacturing facility is a prime example of point source pollution because it typically comes from one specific location, such as a pipe or a discharge channel. This concentrated release of pollutants can often be measured directly at the source, making it more straightforward to monitor and manage.

In contrast, the other options involve pollution that is more diffuse. For instance, pesticide runoff from multiple farms is characterized by its widespread origin and variability, as it accumulates from different fields rather than a single point. Similarly, contamination from agricultural field drains may also stem from various locations and practices across the farmland, creating a non-specific pollution source. Leaching from unsealed landfills represents another form of diffuse pollution, as contaminants can migrate from numerous unmanaged sites into the surrounding environment rather than emanating from a single point. Therefore, the waste discharge from a manufacturing facility clearly exemplifies point source pollution due to its specific and identifiable nature.