What is permeable paving and its benefit?

• A. Non-porous concrete that blocks water
• B. Pervious ground coverings that allow water infiltration, reducing runoff
• C. Paving that reduces traffic noise the most
• D. Sealed surfaces that accelerate runoff

Answer: (B)

Permeable paving lets rainwater pass through the surface and into the soil below, rather than letting it flow over the surface as runoff. This reduces stormwater runoff, helps recharge groundwater, and can improve water quality as water filters through the materials and underlying layers. In practice, permeable options include porous concrete, porous asphalt, or paving systems with voids that are filled with gravel or soil. This contrasts with nonporous or sealed surfaces, which block infiltration and can increase runoff.