What is Nonpoint Source Pollution

Nonpoint Source Pollution is pollution that is caused by rainfall moving over and through the ground, picking up natural and man-made pollutants depositing them into our coastal and ground waters. Nonpoint Source Pollution impacts our island environment, resulting in:

• Runoff into our coastal waters
• Beach closures (red flags notices)
• Contamination of groundwater
• Threatens marine life

What causes Nonpoint Source Pollution? Upland activities such as:

• Land clearing without a DEQ permit
• Construction site-soil matter on the road
• Improper storage and or disposal of oil
• boating maintenance such as cleaning, painting, fueling
• animal wastes
• Improper pesticide application

What can Nonpoint Source Pollution be prevented?

• Dispose of waste properly
• Monitor and inspect septic tanks regularly
• Engage in revegetation (planting)
• Read labels for pesticide or other chemical use (use only what you need or is required)
• Respond to public requests for information and ideas
• Sweep roads and walkways
• Substitute toxic cleaners for natural products
• Reduce vehicle use (carpool)
• Fix car leaks (such as oil, radiator or other fluid)

For more information about Nonpoint Source Pollution in the CNMI, please contact Fran Castro, branch manager at 664-8500.

The following documents are available regarding this topic:

Water Quality Standards