Non-point Source Pollution

Non-point Source Pollutants

Source

Effect

Nutrients

• decomposing leaves or organic material
• excessive fertilizer application

• algae blooms, hypoxia
• health risks to humans (nitrates)

Toxic substances:

copper, lead, zinc

• industrial processes

• health risks

Petroleum products:

gasoline, oil, grease

• transportation common in cities

• health risk to aquatic life, affect the "looks" of waterways too

Pathogens

• animal & bird droppings, human sewage

• health risks