How is point source pollution defined?

Point source pollution is defined as pollution that originates from a specific, identifiable source. This type of pollution can be traced back to a particular location, such as a discharge pipe from a factory or a sewage treatment plant. The ability to pinpoint the origin makes it easier to implement regulations and control measures to minimize or eliminate the pollution.

In contrast, options that describe widespread pollution, specifically agricultural runoff, or pollution that is consistent over time do not fit the definition of point source pollution. Widespread pollution tends to be diffuse and harder to trace back to a single source, while agricultural runoff may involve multiple sources or contribute to non-point source pollution. The key characteristic of point source pollution is its identifiable and localized nature, which allows for more straightforward management methods.