Nonpoint Source Pollution - Theres a type of pollution that degrades some of our state's waterways. NPS pollution occurs mainly through stormwater runoff. When it rains, runoff from farmland, city streets, construction sites, and suburban lawns, roofs and driveways enters our waterways. This runoff often contains harmful substances such as toxics, excess nutrients and sediments. This characteristic makes it all the more difficult to control.
Sediments are soil particles carried by rainwater into streams, lakes, rivers and bays.
By volume, sediment is the greatest pollutant of all. Its caused mainly by erosion resulting from bare land, poor farming practices, and construction and development. Nutrients are substances which help plants and animals live and grow. Fertilizer and animal waste are the main sources of these substances. Toxic substances are chemicals which cause human and wildlife health problems.