To comply with the IDEM MS4 General Permit, all Indiana MS4s must submit a document called the NOI, which describes their jurisdiction area and the intent to discharge storm water to the bodies of water in the state of Indiana. With the new permit released in December 2021, Indiana MS4s will be on the same 5-year permit cycle and complete all requirements within this permit to the maximum extent practicable.
Porter County MS4, located at 155 Indiana Avenue, Suite 311, Valparaiso IN, intends to discharge stormwater into the watersheds listed below and is submitting a Notice of Intent to notify the Indiana Department of Environmental Management of the MS4 entity's intent to comply with the requirements of the MS4 General Permit to discharge stormwater run-off.
HUC 12 Watersheds in Porter County:
If you have any questions about this process, please contact the Department at 219-465-3530.