01/06/2026
Permeable paving is a key component of Sponge City infrastructure because it changes the behavior of the urban surface.
Instead of acting as a sealed barrier, the surface becomes an entry point for water management.
The benefits include reduced runoff, lower pressure on drainage networks, improved site-level water handling, potential support for groundwater recharge depending on conditions, and opportunities for decentralized storage and reuse.
The broader lesson is important: urban infrastructure must become multifunctional.
A street can carry vehicles.
A pavement can support movement.
A surface can manage stormwater.
This is the future direction of resilient city planning.