Nonpoint Source Program
Nonpoint source 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 and deposits them into lakes, rivers, wetlands, coastal waters and underground sources of drinking water. These pollutants include:
- Excess fertilizers and pesticides from agricultural lands and residential areas.
- Oil, grease and toxic chemicals from urban runoff and energy production.
- Sediment from unprotected construction sites, crop and forest lands, and eroding stream banks.
- Salt from irrigation practices and acid drainage from abandoned mines.
- Bacteria and nutrients from livestock, pet waste and faulty septic systems.