DistrictCampusDirectory
CAMPUS

Station 5 - Non-Point Source Pollution

Nonpoint source (NPS) pollution, unlike pollution from industrial and sewage treatment plants, comes from many diffuse sources. NPS pollution is caused by rainfall or snowmelt moving over and through the ground. As the runoff moves, it picks up and carries away natural and human-made pollutants, finally depositing them into aquatic areas like our O.W.L.S. pond and even our underground sources of drinking water. These pollutants include:

  • Excess fertilizers, herbicides, and insecticides from agricultural lands and residential areas;
  • Oil, grease, and toxic chemicals from parking lot runoff ;
  • Sediment from improperly managed construction sites, crop and forest lands, and eroding streambanks;
  • Salt from irrigation practices and acid drainage from abandoned mines

However, by planting grasses in the run-off flow space it acts as a natural filter to remove several of these pollutants before reaching the aquatics pond. Proceed to trail marker #6 by walking south to the Bat Box.

District Calendar