Nonpointsource (NPS) pollution refers to diffuse contamination (or pollution) of water or air that does not originate from a single discrete source. This
distinguishing it from other pollutionsource geometries (such as nonpointsource or area source). The sources are called point sources because in mathematical
Nonpointsource (NPS) water pollution regulations are environmental regulations that restrict or limit water pollution from diffuse or nonpoint effluent