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Indiana Department of Environmental Management

IDEM > Permitting > Water Permits > Wet Weather - Combined Sewer Overflow Wet Weather - Combined Sewer Overflow

Wet Weather consists of the Combined Sewer Overflow program, which 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).

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