Announcement: Indiana NPDES Permits Issued

The Indiana Department of Environmental Management (IDEM) recently issued two general permits:

  1. General NPDES Permit INR040000 for discharges from Municipal Separate Storm Sewer Systems
  2. General NPDES Permit INRA00000 for Discharges of Construction Stormwater

These permits repeal and replace the former general permit-by-rule, 327 IAC 15-13 and 327 IAC 15-5, respectively.  They are being issued for a five-year term, beginning December 18, 2021.

The permits can be downloaded here:

General NPDES Permits Issued