StormwaterONE’s online course for Illicit Discharge Detection and Elimination (IDDE) covers key components necessary for a Municipal Separate Storm Sewer System (MS4) to develop and maintain an IDDE Program.  This course covers the available tools that are associated with the National Pollutant Discharge Elimination System (NPDES) of the Clean Water Act (CWA) to establish or re-establish your MS4 IDDE Program. 

This course provides insight into finding the sources of discharges and highlights problems in identifying illicit discharge sources.  This course also provides information on illicit discharge detection, clues and possible findings, conducting inspections and sampling as well as non-stormwater outfall discharges with examples. 

In addition outfall monitoring, program mapping considerations, common approaches to outfall screening including typical physical and chemical indicators are covered.  Information on inspection documentation, investigation, reporting and environmental crimes are covered.  Lastly, it provides tips on developing an effective IDDE Program.

As authorized by the Clean Water Act (CWA), the NPDES permit program controls water pollution by regulating point sources that discharge pollutants into waters of the United States.  The NPDES program has Phase I and Phase II rulings and control measures.  This course defines where IDDE is one of the six (6) Minimum Control Measures (MCMs) that the operator of a Phase II regulated small MS4 is required to include in its stormwater management program to meet the conditions of the NPDES permit.