What is an impervious surface?
Impervious surfaces are solid surfaces that cover the ground and prevent stormwater from infiltrating into the soil. Examples of impervious surfaces include: driveways, sidewalks, buildings, and parking lots.

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1. What is stormwater?
2. What is an impervious surface?
3. How does the stormwater drainage system work?
4. What is nonpoint source pollution?
5. How is the stormwater system managed in Lilburn?
6. Why shouldn’t I pour cooking grease down the drain?