Where does all that stormwater go after it rains? Well, as you can imagine, a lot of it gets collected on the pavement and can cause issues for motorists and the roadway itself. Puddles can form, and excess water can cause erosion and other pavement defects. Most defects are due to uncontrolled water flow! However, porous asphalt changes that. What is it? Read on to find out all you need to know about porous asphalt.