Pervious concrete pavement addresses important environmental issues and supports green, sustainable growth by the use of pervious concrete, also known as porous, gap-graded, or enhanced porosity concrete.  Porous concrete is concrete with reduced sand or fines, which permits rain and storm water runoff to drain through it rather than flood surrounding areas or storm drains. It is usually a mixture of 3/8” to 1/2” average diameter aggregate, hydraulic cement, other cementitious materials, admixtures and water. The use of pervious concrete is among the Best Management Practices (BMPs) recommended by the U.S. Environmental Protection Agency for the management of storm water runoff volume, rate, and pollutants.

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