Local Government, MS4, Programs

Phase II Communities: Small Municipal Separate Storm Sewer Systems, or MS4s, and Their Local Governments

Overview of Storm Water Management Program Requirements
MS4 Program Funding Guidance New icon.
Public Education and Outreach MCM #1
Public Involvement and Participation MCM #2
Illicit Discharge Detection and Elimination MCM #3
Construction Site Runoff Control MCM #4
Post-construction Runoff Control MCM #5
Pollution Prevention and Good Housekeeping for Municipal Operations MCM #6
Measurable Goals Guidance for Phase II Small MS4s New icon.
Storm Water Program Guide For Phase II Communities of Missouri
Existing Watershed and Partner Organizations
Small MS4 General Permit MO-R040000 PDF
List of Regulated MS4s in Missouri PDF
Additional Resources for Local Governments
Department Regional and Satellite Offices

Overview of Storm Water Management Program Requirements

The national and state PDF storm water regulations now require certain small communities to obtain a National Pollutant Discharge Elimination System, also known as NPDES, permit. Missouri has three Phase I communities  In addition, there are approximately 151 Missouri communities PDF affected by these Phase II storm water regulations  These small communities with Municipal Separate Storm Sewer Systems, also known as MS4s, were required to obtain a NPDES permit by March 10, 2003  The permit requires these regulated MS4s to have their storm water management program in place by March 10, 2008  The program must address six minimum control measures  The larger metropolitan areas such as Kansas City, Springfield and Independence became regulated under the 1990 Phase I regulations  The Metropolitan St. Louis Sewer District successfully petitioned on behalf of the City of St. Louis to be regulated under Phase II.

Affected Missouri communities (medium and large MS4s) required to seek coverage under a NPDES permit

Affected Missouri communities (small MS4s) required to seek coverage under a NPDES permit and develop a storm water management program.

Storm Water Program Development for Regulated MS4s

Six Minimum Control Measures required for Storm Water Management Program for Phase II regulated communities

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MS4 Program Funding Guidance

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Public Education and Outreach (Minimum Control Measures #1)

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Public Involvement and Participation (Minimum Control Measures #2)

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Illicit Discharge Detection and Elimination (Minimum Control Measures #3)

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Construction Site Runoff Control (Minimum Control Measures #4)

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Post-Construction Runoff Control (Minimum Control Measures #5)

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Pollution Prevention and General Housekeeping In Municipal Operations (Minimum Control Measures #6)

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Additional Resources for Local Governments

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