Non-point source pollution occurs when runoff from rain and snowmelt carries pollutants into waterways such as rivers, streams, lakes, wetlands, and even groundwater. The name “nonpoint source pollution” is derived from the concept that there is no single point from which the pollution comes; it comes from everyone and everywhere. IEPA reports that nonpoint source (NPS) pollution is the nation’s and the state’s number one threat to water quality. Examples of sources of NPS pollution in Illinois include runoff from farm fields, livestock facilities, construction sites, lawns and gardens, city streets and parking lots, surface coal mines, and forestry. Rain water or sprinkler water that runs off our lawns, streets and parking lots flows into pipes through storm drains. This water then goes directly into our local lakes and streams, it is not “treated” like water from our bathrooms so it contains soil particles, oil from our cars, fertilizer from our yards, and other pollutants found in our communities. For more information about nonpoint source pollution and project examples, visit IEPA’s website or view a brochure prepared by IEPA with some basic information.