What is an illicit discharge?

An illicit discharge is any discharge to the Municipal Separate Storm Sewer System (MS4) that is not composed entirely of stormwater.  These types of discharges may occur due to direct dumping of waste (paint, oils, grass clippings, and trash) into a storm drain or placement of waste so that it enters a storm drain system is also a form of illicit discharge.

Show All Answers

1. What is stormwater runoff?
2. What is polluted stormwater runoff?
3. Can leaves and grass go into the storm drain?
4. What causes stormwater pollution?
5. Why do we need to manage stormwater runoff?
6. How can I help prevent stormwater pollution?
7. What is an illicit discharge?
8. Doesn’t stormwater runoff go into the sanitary sewer?
9. What is an impervious surface area?
10. Are there any ways I can make a difference?
11. What should I do if I see or suspect an illicit discharge?
12. Whom do I contact if I have further questions?