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Because our storm sewer systems carry water directly to our lakes, rivers, and wetlands without additional treatment, only clean stormwater should enter a storm sewer system. If any other discharge enters the system, it is usually an illicit discharge. MS4s must develop and implement a program to detect and eliminate illicit discharges within their storm sewer system. | Because our storm sewer systems carry water directly to our lakes, rivers, and wetlands without additional treatment, only clean stormwater should enter a storm sewer system. If any other discharge enters the system, it is usually an illicit discharge. MS4s must develop and implement a program to detect and eliminate illicit discharges within their storm sewer system. | ||
+ | *[https://www.epa.gov/npdes/national-menu-best-management-practices-bmps-stormwater#ill EPA MCM 3 guidance] | ||
*[https://www3.epa.gov/npdes/pubs/fact2-5.pdf EPA Illicit Discharge Fact sheet] | *[https://www3.epa.gov/npdes/pubs/fact2-5.pdf EPA Illicit Discharge Fact sheet] | ||
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Because our storm sewer systems carry water directly to our lakes, rivers, and wetlands without additional treatment, only clean stormwater should enter a storm sewer system. If any other discharge enters the system, it is usually an illicit discharge. MS4s must develop and implement a program to detect and eliminate illicit discharges within their storm sewer system.