Which of the following technologies is often utilized for leak detection in water distribution systems?

Pressure transducers are commonly used in water distribution systems for leak detection due to their ability to monitor changes in pressure within the system. When there is a leak, the pressure typically drops, signaling that there is an issue that needs to be addressed. By continuously measuring and recording pressure data, these devices help in identifying abnormalities that indicate a potential leak.

Additionally, using pressure transducers allows for real-time monitoring, enabling operators to respond quickly and mitigate water loss, which is crucial for maintaining the efficiency of water distribution systems. In contrast, the other options listed do not have a relevant application for leak detection; therefore, they serve different purposes and are not suitable for this specific task.