What is considered an impervious surface?

An impervious surface is a hard surface that does not let water soak into the ground or greatly reduces the amount of water that soaks into the ground. For more information, please visit our Impervious Surface page.

Impervious Surface Page.

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1. Why is impervious area used to determine a property's stormwater utility fee?
2. What is considered an impervious surface?
3. How is the amount of impervious area on my property calculated?
4. What if I disagree with the amount of impervious area listed on my bill?
5. Why are there tiers for the residential stormwater utility fees?
6. What are the tiers?