Green Alleys coming soon to Chicago…

In a green alley, water is allowed to penetrate the soil through the pavement itself, which consists of the relatively new but little-used technology of permeable concrete or porous asphalt. Then the water, filtered through stone beds under the permeable surface layer, recharges the underground water table instead of ending up as polluted runoff in rivers and streams.

1 Response to “”


  1. 1 Anonymous

    I wonder if we can somehow collect the water that has permeated through the concrete so that we can use it. That would be a great idea for South Florida, where rain is abundant. Combine that with water recycling, efficient water usage, and fewer 2-acre lawns to water. Ha

Leave a Reply