Permeable pavements are specially designed surfaces that allow rainwater to pass through them and soak into the ground below. Unlike traditional concrete or asphalt, which blocks water and causes runoff, permeable pavements mimic natural soil absorption. They are made using porous materials or spaced paving blocks, and are often used in sidewalks, parking lots, and public plazas. This helps reduce flooding, especially during heavy rains, which are becoming more frequent due to climate change.

Feasibility & Local Applicability

In small islands like Curaçao, Aruba, and St. Martin, permeable pavements are a practical solution. These islands face challenges with limited drainage infrastructure and increasing rainfall intensity. Permeable pavements can be locally installed using available materials and adapted to different soil types. Their effectiveness has been studied in Caribbean contexts, showing strong potential for reducing urban flooding and improving water management (Monrose & Tota-Maharaj, 2018). 

Co-benefits

Beyond flood control, permeable pavements offer several environmental benefits. They help recharge underground water sources, which is vital for islands with limited freshwater. The filtering layers beneath the surface trap pollutants, improving water quality. These pavements also reduce surface temperatures, making urban areas cooler and more comfortable. In addition, they support healthier vegetation by allowing water and air to reach plant roots.

Equity & Vulnerability Considerations

Permeable pavements can be especially beneficial in low-income or flood-prone neighborhoods, where infrastructure is often weaker. By reducing flood risks and improving water access, they help protect vulnerable communities. However, care must be taken to ensure that installation and maintenance are inclusive, and that local workers are trained and involved in the process. Community engagement is key to long-term success. 

Costs

Low - Medium | Initial installation costs for permeable pavements can be higher than traditional paving, due to the need for specialized materials and design. However, they often lead to savings over time by reducing the need for stormwater infrastructure and minimizing flood damage. Maintenance is relatively simple, involving periodic cleaning to prevent clogging. Long-term benefits in water management and climate resilience make them a cost-effective investment for island communities.

Case-studies & Examples

• Green Building Alliance: Permeable Pavement explainer
• Urban Green Blue Grids: Permeable Pavement examples

Literature

• Monrose, J., & Tota‐Maharaj, K. (2018). Technological review of permeable pavement systems for applications in small island developing states. CLEAN–Soil, Air, Water, 46(9), 1700168