Illicit Discharge Detection and Elimination (IDDE)

Developed by the Center for Watershed Protection and Dr. Robert Pitt, University of Alabama under an EPA grant, the manual Illicit Discharge Detection and Elimination (IDDE): A Guidance Manual for Program Development and Technical Assistance is intended to provide support and guidance to stormwater Phase II communities developing IDDE programs. This comprehensive manual discusses all aspects of an IDDE Program including:

• Components of an effective IDDE program
• Auditing existing programs
• Identifying and preventing illicit discharges
• Field screening using the Outfall Reconnaissance Inventory (ORI)
• Techniques to track and fix illicit discharges

An electronic copy of the guide, along with many of the tools, supporting resources, and examples of other IDDE manuals are available below.

• Illicit Discharge Detection and Elimination: A Guidance Manual for Program Development and Technical Assessments [PDF - 9.3 MB - 378 pp]
• For slower internet connections, click here to download the individual chapters and technical appendices.

Additional IDDE documents

Electronic Resources Associated with the Manual

• Outfall Reconnaissance Inventory (ORI) Form [WORD - 117 KB - 2 pp]
• ORI Database [ACCESS - 15.4 MB] - Use to record and manage ORI data (Note: Please download to your personal desktop, do not open and work from file)
• Hotspot Site Investigation Form [PDF - 55 KB - 2 pp]
• Chemical Mass Balance Model (CMBM) Setup [EXE - 2.57 MB] - Executable file for sophisticated technique used to differentiate among flow types at outfalls with blended flows
• CMBM Sample Input File [EXCEL - 15 KB]
• Hotline Tracking Form [WORD - 74 KB - 2 pp]

IDDE Supporting Material

• Methods for Detection of Inappropriate Discharges to Storm Drainage Systems: Background Literature and Summary of Findings [PDF - 10 MB - 431 pp]
• Source Verification of Inappropriate Discharges to Storm Drainage Systems [PDF - 389 KB - 27 pp]
• Quantification of Escherichia Coli and Enterococci levels in Wet Weather and Dry Weather Flows [PDF - 385 KB - 30 pp]
• Inappropriate Discharge Detection and Elimination: What Phase I Communities Are Doing to Address the Problem [PDF - 168 KB - 14 pp]

IDDE Webcasts

• Developing Your IDDE Program (IDDE 101)
• Conducting Illicit Discharge Detection and Elimination Investigations (IDDE 201)

Regional and State IDDE Guidance

• IDDE Manual: A Guidance Manual for Municipalities in the State of Ohio [PDF - 1.74 MB - 111 pp] (Cuyahoga County Board of Health, 2006)
• A Guidance Manual for Identifying and Eliminating Illicit Connections to MS4s [PDF - 41 MB - 55 pp] (Galveston County, TX Health District, 2002)
• Detecting Illicit Stormwater Discharges: Fact Sheet Series [PDF - 1.58 MB - 9 pp] (Missouri Department of Natural Resources, 2007)
• Guidelines and Standard Operating Procedures: IDDE and Pollution Prevention / Good Housekeeping for Stormwater Phase II Communities in New Hampshire [PDF - 1.46 MB - 116 pp] (New Hampshire Department of Environmental Services, 2006)
• How to Do Phase II: Guidance for Local Governments, Measure 3: IDDE (North Carolina Cooperative Extension)
• IDDE Manual: A Handbook for Municipalities [PDF - 495 KB - 59 pp] (New England Interstate Water Pollution Control Commission, 2003)
• Lake County IDDE Guidance Manual [PDF - 1.25 MB - 125 pp] (Lake County, IL Stormwater Management Commission, 2006)
• Lower Charles River IDDE Protocol Guidance for Consideration [PDF - 124 KB - 6 pp] (Massachusetts Department of Environmental Protection, 2004)
• The Rouge River Project IDDE Program

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Last updated on January 10, 2008 9:49 AM
URL:http://cfpub.epa.gov/npdes/stormwater/idde.cfm