Definitions for "Non-point-source pollution"
Pollutants emanating from an unconfined or unchannelled source, including agricultural runoff, drainage or seepage and air contamination from landfills or surface impoundments.
water pollution that originates from various or diffuse sources; examples include stormwater runoff and streambank erosion (see point-source pollution).
Negative impacts on streams that cannot be directly pinpointed as coming from one source. Agriculture and storm water are good examples of non-point source pollution.