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MS4 Program and Pollution in Stormwater Runoff
The federal government has determined that stormwater runoff is the leading cause of water pollution in the nation. When it rains, stormwater collects many types of hazardous materials that flow directly into area lakes and streams. Stormwater is not treated. Oils, chemicals, fertilizers, litter and waste in stormwater can cause major problems in waterways. The effects may vary; however, research has shown that pollution affects drinking water supplies, recreation, fisheries and wildlife.
Stormwater pollution results from a wide variety of human activities. Each of us can contribute to the problem without even realizing it.
Chesapeake has a regulated municipal separate storm sewer system (MS4), which is the technical name for the network of ditches, pipes, lakes, and other structures which convey and treat stormwater. The City is required to comply with federal and state regulations and is mandated by the Department of Environmental Quality to follow its Virginia Stormwater Management Program MS4 Permit (updated in 2016) which details limitations and requirements on stormwater discharges and programs. View the City's MS4 Program Plan the Fiscal Year 2017 MS4 Annual Report below:
You can help reduce pollution by remembering to keep potential pollutants away from storm drains. Never throw or dump anything down a storm drain. Not only can this contaminate local waters, but it can also contribute to flooding by blocking drains, inlets and ditches.
Visit the Stormwater Education webpages to learn more about stormwater pollution and how you can prevent it.