An illicit discharge occurs when a pollutant is released into the storm sewer system or surface waters.
Paints, varnishes and solvents
Soaps and cleaning solutions
Kerosene, gasoline, oil and other automotive fluids
Liquid and solid wastes and yard wastes
Refuse, rubbish, garbage, litter, or other discarded or abandoned objects or accumulations
Pesticides, herbicides and fertilizers
Hazardous substances and wastes
Sewage, sewage sludge, fecal coliform and pathogens
Dissolved and particulate metals
Toxic or radioactive materials
Wrecked or discarded equipment
Sand or dirt
Ashes and incinerator residue
Wastes and residues that result from constructing a building or structure
Noxious or offensive matter of any kind
The storm sewer system includes:
Streets and their associated curbs, gutters, drainage ditches or swales
Detention or retention basins
Other drainage structures and facilities
Surface waters include:
What is NOT Considered an Illicit Discharge?
Water line or hydrant flushing;
Landscape or garden irrigation or lawn watering;
Diverted stream flows;
Rising ground waters;
Uncontaminated ground water infiltration;
Uncontaminated pumped ground water;
Discharges from potable water sources;
Air conditioning condensation;
Water from crawl space pumps;
Individual residential car washing or charity car washing;
Flows from riparian habitats and wetlands;
Dechlorinated swimming pool discharges;
Street wash water;
Flows from fighting fires
Other non-stormwater discharges for which a valid NPDES discharge permit has been approved and issued by the State of North Carolina.
What is Considered an Illicit Connection?
An illicit connection is when a drain or pipe conveying sewage, process wastewater, wastewater from washing machines, wash water from commercial vehicle washing or steam cleaning, or water from indoor sinks or floor drains, is connected to the storm sewer system.