Infiltration/Inflow Control Program
  Excessive infiltration and inflow (I/I) into the sanitary sewer system is a serious problem that contributes to sanitary sewer overflows (SSOs) and basement backups (BBs). The Environmental Protection Agency (EPA) and the Illinois EPA (IEPA) imposed special conditions in the National Pollutant Discharge Elimination System (NPDES) permits issued for the District’s Water Reclamation Plants (WRPs) that requires tributary local separate sanitary sewer satellite entities to implement measures in addition to those required under the 1985 Sewer Summit Agreement if excessive I/I in the system causes or contributes to SSOs or BBs. Due to this mandate, the District incorporated an updated Infiltration and Inflow Control Program (IICP) that was developed with the help of an Advisory Technical Panel (ATP) into the Watershed Management Ordinance (WMO).
  The IICP is defined in Article 8 of the WMO.
  arrow Article 8: Infiltration/Inflow Control Program (Incorporated into the WMO on July 10, 2014)
  The District and the ATP developed the Technical Guidance Manual (TGM) which serves as a technical reference to the IICP.
  arrow IICP Technical Guidance Manual (TGM)
  pdf file LTOMP and PSP Outline
  Annual Reporting Forms and SSO and BB Internal Summary Form
  arrow IICP Reporting Forms
    Email the completed Annual Summary Report to
  The District distributes annual status reports on excessive I/I elimination.
  arrow MWRD Annual Reports on Excessive I/I Elimination
  I/I resources:
  arrow Geographic Information Systems (GIS) Assistance Program
  arrow Links to I/I Resources
  Notifications and presentations:
  arrow Notifications
  arrow IICP Training Workshops
  arrow Program Development and Public Meetings
  I/I Information Pamphlet for Homeowners
  arrow I/I Information Pamphlet for Homeowners (on-line version)
  arrow I/I Information Pamphlet for Homeowners (printer friendly)
  If you have any questions about the Infiltration/Inflow Control Program, contact Ms. Justine Skawski at (312) 751-3261,, or the below address.
    Justine Skawski
Engineering Department - Local Sewers System Section
Metropolitan Water Reclamation District of Greater Chicago
111 East Erie Street
Chicago, IL 60611-2893