|Stormwater runoff is the result of precipitation created by rain or snowmelt flowing over any exposed surface, such as equipment, roofs, roads, and pastures. As the water flows over urbanized and industrial areas it has the potential to pick up a number of contaminants like oil, sediment, chemicals, and litter. This water is then transported to nearby waterways. Polluted stormwater draining from urbanized areas is one of the leading causes of water pollution in lakes, streams, and oceans. This course describes the legal provisions related to stormwater pollution prevention as well as structural and operational best management practices at facilities.