Which describes nonpoint source pollution?

Which describes nonpoint source pollution?

• A. A single pipe discharge
• B. Pollution from a large, diffuse area such as urban runoff
• C. Air emissions from a factory chimney
• D. Wastewater treatment plant effluent

Answer: (B)

Nonpoint source pollution is pollution that originates from many diffuse sources across a landscape and is carried into water bodies by runoff, rather than from a single identifiable discharge. That description fits pollution from a large, diffuse area such as urban runoff, where rain washes pollutants like oil, metals, fertilizers, and sediments off streets and into rivers and lakes. In contrast, a single pipe discharge represents a point source—an identifiable outlet. Wastewater treatment plant effluent is also a point source. Air emissions from a factory chimney involve air pollution, not water pollution, so they’re not nonpoint source pollution. Because nonpoint pollution comes from numerous sources over a wide area, managing it relies on broad strategies such as reducing runoff, increasing permeable surfaces, and promoting better fertilizer and pesticide practices.

Nonpoint source pollution is pollution that originates from many diffuse sources across a landscape and is carried into water bodies by runoff, rather than from a single identifiable discharge. That description fits pollution from a large, diffuse area such as urban runoff, where rain washes pollutants like oil, metals, fertilizers, and sediments off streets and into rivers and lakes.

In contrast, a single pipe discharge represents a point source—an identifiable outlet. Wastewater treatment plant effluent is also a point source. Air emissions from a factory chimney involve air pollution, not water pollution, so they’re not nonpoint source pollution. Because nonpoint pollution comes from numerous sources over a wide area, managing it relies on broad strategies such as reducing runoff, increasing permeable surfaces, and promoting better fertilizer and pesticide practices.