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MSD is committed to providing an educational resource to the public on storm water pollution and will provide tools to protect and preserve the quality of our water environment. If we all work together, we can improve the quality of our water.

Under the St. Louis County Phase II Storm Water Management Plan (SWMP), MSD is working to improve water quality. The purpose of the SWMP is to prevent harmful pollutants from being carried by storm water runoff into local water bodies and to improve the water quality in the area. The SWMP was developed in partnership with 60 co-permittees and MSD to comply with storm water permit requirements for the St. Louis Metropolitan Small Municipal Separate Storm Sewer System (MS4). Under the permit, MSD is the coordinating authority for the development and implementation of the SWMP.

Background on the Regulatory Program

 

Storm Water Pollution Problems in the Area

What are the most frequently encountered pollutants in our area? The Saint Louis County Storm Water Management Plan has identified the major pollutants in our area, which include: trash, soil solids, and animal waste.

As individuals and homeowners, we can help to improve our neighborhood creeks and streams by making a few changes in the way we live. Please review the "Publications and Videos" available on this page for tips on storm water pollution prevention and watershed management. 

Best management practices (BMPs) are methods to prevent or reduce the pollutants in storm water runoff. Our St. Louis County Phase II Storm Water Management Plan (SWMP) includes BMPs that address potential sources of pollutants in storm water as required by the federal and state regulations. The implementation of BMPs in the SWMP will satisfy the six minimum control measures (MCMs) required by the Phase II Regulations. The activities and BMPs that address the major pollutants of concern to prevent these pollutants from reaching watercourses in our area are described in the paragraphs under the appropriate MCM heading below.

 

I. Public Education and Outreach

The Plan implements a public education program to distribute educational materials to the community and conduct outreach activities about the impacts of storm water discharges on water bodies and the steps that the public can take to reduce pollutants in storm water runoff.

Some activities under the plan include:

  • Distribution of brochures on Pet Waste Management, Yard Waste, on Impacts from Businesses, and more
  • Sponsoring a storm water school article contest
  • Developing a storm water pollution prevention video
  • Airing four (4) storm water infomercials
  • Seminars for small businesses

II. Public Involvement and Participation

The public is actively involved in implementation of the storm water management program through community groups of all kinds and participation in activities to reduce storm water pollution.

Some activities under the plan include:

  • Storm drain marking
  • Stream clean-ups
  • Neighborhood trash clean-ups
  • Volunteer presentations
  • Household hazardous chemical collections

III. Illicit Discharge Detection and Elimination

MSD has developed and implemented a program to detect and eliminate illicit discharges into our MS4 and area streams. We developed and maintain a map of the area streams, storm sewers and storm sewer outfalls.

Some activities under the plan include surveying the creeks for:

  • Illicit connections to storm sewers
  • Illegal dumping
  • Failing septic systems

IV. Construction Site Storm Water Runoff Control

Land disturbance programs must be implemented to reduce pollutants in storm water runoff from construction activities that disturb the land. The BMPs required by the program focus primarily on erosion and sediment control.

Some activities under the plan include:

  • St Louis County government implementing a new Land Disturbance Code, requiring storm water pollution prevention plans for all major land disturbance projects disturbing one acre or more of land.
  • Implementation of the model Land Disturbance Ordinance by all municipal co-permittees

V. Post-Construction Storm Water Management

A program to address storm water runoff from new development and redevelopment projects must be implemented to reduce pollutants in storm water runoff from developed property. The program must ensure that BMPs are in place to prevent or minimize water quality impacts. Structural BMPs include storm water detention ponds, infiltration basins, filter strips and more.

Some activities in the plan include:

  • Revising MSD's Rules, Regulations and Engineering Design Requirements for Storm Water Drainage Facilities
  • Adopting ordinances to support changes to engineering design requirements
  • Submitting a storm water funding mechanism based on impervious area for voter approval

VI. Pollution Prevention/Good Housekeeping for Municipal Operations

An operation and maintenance program that has the ultimate goal of preventing or reducing pollutant runoff from municipal operations will be implemented by all co-permittees.

Some activities in the plan include:

  • Developing a model operation and maintenance program
  • Initiating a training program to educate the municipal employees
  • Assessment by municipalities of their existing ordinances pertaining to trash and pet waste management
  • Development of model ordinances for trash and pet waste management for municipalities to adopt