NPS Pollution which does not originate from a single source, or point. Examples of non point source pollution include soil erosion from construction sites, pesticide and fertilizer runoff, failing septic and sewer systems, animal waste, motor oil, grease, and antifreeze. Term Acronym Source
pollution that cannot be tied to a single, identifiable source; nitrate pollution from agriculture is non-point-source pollution, since a single source can't be identified.