What is Storm Water Runoff Pollution?
Storm water runoff refers to seasonal rainfall flows and snowmelts in the spring. It is very noticeable during a heavy rain storm when large volumes of water drain off paved areas. Runoff pollution can happen anytime of the year when excessive water use from irrigation, car washing and other sources carries trash, lawn clippings and other urban pollutants into storm drains. Even automobiles leaking motor oil 20 miles inland can still pollute the lakes.