The urban population grappling with water scarcity is projected to reach two billion people by 2050. Therefore, mitigating leaks in the water distribution networks (WDNs) becomes crucial for better future water security. This review article summarizes the present detection capabilities concerning small leaks (less than 1 L/s). The scope of the review encompasses experiments and … [Read more...] about Recent Developments of Subsurface Small-Leak Detection Techniques in Water Distribution Networks: A Review