When it rains, it drains.

Pervious ConcretePervious concrete is a concrete mix that has minimal sand (fine aggregate). Due to this alteration of the concrete mix, pervious concrete typically has a void structure which ranges from 15% to 30%. This void structure allows stormwater to pass from the surface of the concrete through to the stone base underneath the pavement, and eventually back in to the water table where it belongs. The use of pervious concrete brings a multitude of environmental benefits to developers, builders, and consumers and saves a considerable amount of money and resources in comparison to conventional stormwater handling systems.

Pervious Concrete Specifiers Guide - August 2017