What is an impervious area?

An impervious surface is any hard surface that does not absorb water and impedes the natural flow of water into the soil. In general, impervious surfaces include hard surfaces such as building garages, parking lots and basketball or tennis courts.

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1. What is stormwater runoff?
2. Why is stormwater runoff a problem?
3. Where does water pollution come from?
4. What are some examples of drainage problems?
5. What is the purpose of storm drains?
6. What’s the difference between a sewer drain and a storm drain?
7. Who owns the stormwater system?
8. What is an impervious area?
9. What are stormwater ponds?
10. Why do we have these ponds in our neighborhoods?
11. Why does my stormwater pond look scummy, turbid or have algae?
12. Can I swim in these ponds?
13. What can I do to help keep my pond looking clean and healthy?