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IDEM > Permitting > Water Permits > Wet Weather - CSO & Storm Water (Rule 5, 6, & 13) > Combined Sewer Overflow (CSO) Permitting Combined Sewer Overflow (CSO) Permitting

The Combined Sewer Overflow program augments the NPDES Municipal permitting program by implementing a strategy for the maintenance and management of combined sewer collection systems. The primary objective of this group is to insure the minimization of impacts to waters of the state from combined sewer overflows (CSOs).

CSO Long Term Control Plan Update

CSO Background Information

CSO Discharge Monitoring Report (DMR) Forms and Instructions

*These CSO DMR forms are in Excel format and may be filled out with your computer. E-mail Dave Tennis, dtennis(at)idem.in.gov, with questions regarding these forms. However, it must be noted that CSO DMRs must be mailed in and may not be submitted electronically.

**The data and parameters shown on this document are for an example form only and do not necessarily reflect all of the required parameters and limitations on your NPDES permit.

CSO Policy Workgroup

This workgroup meets in IGCN, 13th Floor, Commissioner's Large Conference Room, unless otherwise noted.

* Note: Time Change

Additional Information