Nonpoint source, or non-point source, or NPS, is a source that does not come from a single point. *

Point source A point source is a single identifiable ''localized'' source of something. A point source has a negligible extent, distinguishing it from other source geometries. Sources are called point sources because, in mathematical modeling, these sources ...

, contrasts with nonpoint source *

Nonpoint source pollution Nonpoint source (NPS) pollution refers to diffuse contamination (or pollution) of water or air that does not originate from a single discrete source. This type of pollution is often the cumulative effect of small amounts of contaminants gathered ...

, water pollution * Nonpoint source water pollution regulations, water pollution regulations

See also