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Storm Water Management Program Storm water discharges are generated by runoff from land and impervious areas such as paved streets, parking lots, and building rooftops during rainfall and snow events that often contain pollutants in quantities that could adversely affect water quality. Most storm water discharges are considered point sources and require coverage by a National Pollutant Discharge Elimination System (NPDES) permit. The primary method to control storm water discharges is through the use of best management practices (BMPs). The Indiana Department of Environmental Management (IDEM) has identified the cities, counties, prisons, universities and other entities that must obtain permit coverage. The environmental benefit to be achieved by this permit program is a reduction in the amount of pollutants that enter water bodies by way of storm water runoff, thus improving water quality. The following entities have joined together in order to obtain this NPDES permit and be in compliance with the Stormwater Phase II Final Rule:
For more information on MS4s, please download a fact sheet from the EPA.
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