What is considered impervious area?

Lexington’s Zoning office defines impervious surface as: “Any surface which reduces or prevents the absorption of stormwater into previously undeveloped land. Examples are buildings, parking lots, driveways, streets, sidewalks, and any areas surfaced with concrete or asphalt.” 

Gravel surfaces compacted by parking or vehicular traffic and swimming pools are also considered impervious, but properly designed and installed porous asphalt pavements and pavers can be considered pervious.

Show All Answers

1. What is a stormwater utility?
2. What would the stormwater utility pay for?
3. How will the fee be calculated?
4. Can I reduce my fee?
5. Do other towns in Massachusetts have stormwater utilities?
6. How would Lexington’s Stormwater Management Program benefit me?
7. What are the fees for Fiscal Year 2025?
8. What is considered impervious area?
9. Will tax-exempt properties pay?
10. What if I believe my fee was incorrectly calculated?