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.

Illicit Discharge Interactive Demonstration Click one of the buttons below to view an interactive illicit discharge demonstration.

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