What is Stormwater?
Stormwater is water from precipitation that flows across the ground and pavement when it rains or when snow and ice melt. The water seeps into the ground or drains into storm sewers. These are the drains you see at street corners or at low points on the sides of streets. Collectively, the draining water is called stormwater runoff.
Did You Know?
Impervious surfaces such as rooftops, driveways, sidewalks, and streets prevent stormwater runoff from naturally soaking into the ground.
As stormwater flows over driveways, lawns, and sidewalks, it picks up debris, chemicals, dirt, pet waste and other pollutants. Stormwater can flow into a storm sewer system or directly to a lake, stream, river, wetland, or coastal water. Anything that enters a storm sewer system is discharged untreated into the waterbodies we use for swimming, fishing, and providing drinking water.