Stormwater Ordinance and Design Manual
City of Madison Stormwater Management Ordinances:
The City of Madison regulates Stormwater Management through an the City of Madison Stormwater Management Ordinance adopted in accordance with statutory authority granted to the City of Madison under “Home Rule” and further is required by Phase II of the National Pollutant Discharge Elimination System Stormwater program (40 CFR Parts 9, 122, 123 and 124; December 8, 1999) authorized by the 1987 amendments to the Clean Water Act, the Indiana Department of Environmental Management’s (IDEM) Municipal Separate Storm Sewer System (MS4) General Permit (MS4 GP), and the Indiana Department of Environmental Management’s Construction Stormwater General Permit (CSGP). This Ordinance shall apply to any Development or Construction plan that is submitted to the City of Madison for permit after January 1st, 2025. Any plans submitted to any Department prior to the passing of this ordinance shall be subject to all previously approved ordinances and regulations in existence at time of filling.
