All Things Being Equal, Make it Permeable
Restoring or maintaining a site at predevelopment conditions in that the water that falls on a site should have the opportunity to infiltrate into the ground just as it did before development can have many environmental as well as economic advantages. With permeable pavements, water runoff is eliminated which helps protect our creeks & bay from pollutants that it would otherwise bring with it, benefits trees & plants and recharges our groundwater to name a few environmental advantages. Also with permeable pavements, they reduce reliance on expensive infrastructure projects like stormwater systems, eliminate need for high maintenance bioswale systems and maximize use of land by combining the stormwater system with the pavement, to name a few economic advantages.
There can be many other advantages to the use of pervious concrete as well such as creating aesthetically pleasing level surfaces without all the wonky grade changes directing to surface drains, dry sports courts, addressing difficult drainage areas and receiving permeable credits for new home construction.
So if we can make our pavements as or more attractive and durable than they already are and for comparable costs and they are permeable too, then why don’t we?