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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).
The following documents are available on the IDEM Nonrule Policies page:
The following forms and supplemental content are now available on the IDEM Forms page:
The CSO MRO Form is in Excel format and must be filled out with your computer. It must be noted that CSO MROs must be printed and mailed in each month. The CSO MRO excel file should be submitted electronically at the end of the year to your CSO Project Manager.
**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.
IDEM intends to monitor each CSO community’s compliance progress throughout their LTCP implementation schedule. IDEM staff have initiated a program in which we will conduct site visits to CSO communities at various times throughout their LTCP implementation period to document the implementation of approved LTCP tasks. You may have already received a letter from IDEM indicating the date of our site visit and requesting your assistance in completing background information in preparation for our visit. If you have not been contacted regarding such a visit, please note that IDEM staff are actively contacting communities to schedule these visits. We look forward to working with each CSO community throughout the LTCP implementation period in a shared goal of improving Indiana’s water quality.