In 1999 the City became regulated under Phase II of the Clean Water Act to improve water quality and protect rivers, streams, and drinking water resources. The Department of Natural Resources regulates and permits the City to operate our municipal separate storm sewer system (MS4). For permit compliance, the City implements a Storm Water Management Plan (SWMP) to reduce pollutants from being carried by storm runoff into local water bodies. The SWMP must address six minimum control measures:
I. Public Education and Outreach
Implement a public education program to distribute educational materials 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 runoff.
II. Public Involvement and Participation
Actively involve the public in the development and implementation of the plan through community groups and activities to reduce pollution.
III. Illicit Discharge Detection and Elimination
Wentzville has developed and implemented a program to detect and eliminate illegal discharges and dumping into storm drains and streams. We maintain a map of streams, storm drains and storm drain outfalls.
IV. Construction Site Storm Water Runoff Control
Implement and enforce a program requiring Best Management Practices (BMPs) to reduce pollutants from construction activities. BMPs focus primarily on erosion and sediment control and construction waste.
V. Post-Construction Storm Water Management
The program must ensure that structural and non-structural BMPs are in place to prevent or minimize long-term water quality impacts from new and redevelopment projects. BMPs include stormwater ponds, infiltration basins, filters and more.
VI. Pollution Prevention for Municipal Operations
Implement an operation and maintenance program and training to prevent or reduce pollutants in runoff from municipal operations.
Wentzville works with property owners, businesses, and other stakeholders to increase awareness of stormwater issues. Learn more about the City's SWMP and MS4 Permit by viewing the Quick Links to the right. Here are some tools used in our community to help prevent stormwater pollution: