Sediment Pollutants

If you observe stormwater pollution, call the Stormwater Helpline at 919-996-3940 or send an email to IllegalDischarge@raleighnc.gov.

If you observe or experience a water line break, contact the Raleigh Water Call Center at 919-996-3245.

Sediment Overview

Sediment is the loose sand, clay, silt and other soil particles that settle at the bottom of bodies of water. Sediment can come from stream bank erosion, construction sites, or other areas where land is being disturbed. Decomposition of plants and animals is another large source of sediment in our rivers, lakes, and streams.

While sedimentation is a natural part of the environment and important for ecology, too much sediment, especially deposited over a short period of time, can pollute these water bodies by:

• Degrading aquatic plant and animal habitat and negatively impacting the health of local streams,
• Impairing the use for recreational and commercial purposes; and,
• Promoting growth of invasive plant species and plants while carrying other pollutants like heavy metals and nutrients.

Active and Post Construction

Erosion and sediment control is important on every construction site. Construction sites, large or small, can become a problem for existing neighbors as well as the environment when soil has been disturbed. Learn more about ways to prevent pollution on active and post construction sites.

Leaves and Yard Waste

When leaves and yard waste are not properly disposed, they can flow through the storm drain to our creeks, streams, lakes and rivers, which can release pollutants that kill plants and organisms in our waterways. Learn more about how you can keep leaves and yard waste from entering storm drains.