Local Government, MS4 Programs

A municipal separate storm sewer system is a conveyance or system of conveyances (roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, storm drains, etc.) that is also:

  • owned or operated by a public entity (which can include cities, townships, counties, military bases, hospitals, prison complexes, highway departments, universities, etc.) having jurisdiction over disposal of sewage, industrial wastes, stormwater, or other wastes, including special districts under State law such as a sewer district, flood control district or drainage districts, or similar entity, or an Indian tribe or an authorized Indian tribal organization, or a designated and approved management agency under section 208 of the Clean Water Act that discharges to waters of the United States;
  • designed or used for collecting or conveying stormwater;
  • which is not a combined sewer; and
  • which is not part of a publicly owned treatment works.

MS4 Programs in Missouri
Regulated MS4s in Missouri
Stormwater Management Plans

Other Organizations
Watershed and Partner Organizations

Certification Programs for Managers
MS4 Operator Certification Program - EnviroCert International

Urbanized Areas in Missouri
EPA Urbanized Area Fact Sheet (EPA 833-F-00-004)
Missouri populations as defined by U.S. Census Bureau
Understanding Census.gov
Missouri's Nine Urbanized Area Reference Maps 2010 as defined by U.S. Census Bureau:

Stormwater Program Development for Regulated MS4s
National Menu of Best Management Practices
Missouri Guide to Green Infrastructure: Integrating Water Quality into Municipal Stormwater Management, May 2012
Measurable Goals Guidance for Phase II Small MS4s Designed to help small MS4 operators comply with the measurable goals permitting requirements
Phase II Stormwater Management Plan – Metropolitan St. Louis Sewer District
Worksheets, checklists, ordinances, and more for all six Minimum Control Measures - Pennsylvania DEQ
Model Ordinances to Protect Local Resources - EPA (for Phase I & II communities).
Protecting Water Resources with Higher-Density Development - EPA January 2006

Six Minimum Control Measures required for Stormwater Management Program for Phase II regulated communities
EPA Six Minimum Control Measures
Missouri’s Small MS4 General Permit Conditions