Storm water is water from rain, snowmelt or excess lawn watering. The water that does not soak up in the ground runs through streets, parking areas, sports fields, gravel lots, rooftops or other developed land and flows directly into nearby lakes, creeks and rivers. The drizzling or pounding rain picks up and mixes with what's on the ground: Storm water may seem clean but it can contain contaminants picked up off our roadways and roofs.
What's In Storm Water Runoff?
Pollutants on the streets and parking lots get washed away with the storm water runoff into waterways. Here are some of the types of pollutants in storm water runoff.
Storm water is not clean and it can pollute our streams and lakes. Contaminated storm water is the largest contributor of pollutants to Wisconsin's urban waters today. These types of pollutants can harm fish and wildlife populations, kill native vegetation, foul drinking water supplies, and make recreational areas unsafe and unpleasant.
Additional Stormwater Informative Links
MPCA Stormwater Management
Minnesota Stormwater Manual
U of M Extension - Stormwater Education