An
Illicit Connection is the discharge of pollutants or non-storm water
materials into a storm sewer system via a pipe or other direct
connection. Sources of illicit connections may include sanitary sewer
taps, wash water from laundromats or carwashes, and other similar
sources.
An Illicit Discharge is the discharge of pollutants or non-storm water
materials to storm sewer systems via overland flow or direct dumping of
materials into a catch basin. Some examples of illicit discharges
include the overland drainage from a carwash or dumping used motor oil
in or around a catch basin.
