Nonpoint source (NPS) pollution, also known as polluted runoff, is a leading cause of water quality problems in Wisconsin. Polluted runoff is caused by rainfall or snowmelt moving over and through the ground picking up natural and human–made pollutants, depositing them into rivers, lakes, wetlands and groundwater. Pollutants include fertilizers, nutrients, oil, grease, sediment and bacteria from agricultural, urban and residential areas. (WI DNR)

Learn more about polluted runoff here and by downloading the below handouts:

Heated Sidewalks
Organic Lawn Care
Residential Soil Amendments
Shoreland Property Improvements
Smart Winter Salting for Maintenance Professionals & Building Owners/Managers