07/10/2026
How a sustainable urban drainage system works.
Instead of sending rainwater straight into sewers, a SUDS street slows it down, cleans it and lets it soak into the ground:
1. Road runoff collection. Captures rainwater from the road and channels it into the system.
2. Permeable bike lane. Lets water infiltrate instead of pooling on the surface.
3. Filtering soil. Removes pollutants and toxic elements from the water.
4. Max water level. An engineered overflow with a root zone for bioretention.
5. Absorbent plants. Take up nutrients and nitrates from the water.
6. Tactile paving. Keeps the street accessible and safe for all users.
The result: less flood risk, cleaner water, cooler streets, better air and more pleasant public space. Drainage designed as landscape, not just pipes.