Pipelines have transported water, oil and gas for hundreds of years, serving residential communities, industrial sites and commercial centers reliably and silently. Leak detection systems (LDS) are needed because pipeline spills occur more frequently as infrastructure ages and more hazardous products are transported. Leak detection systems cannot prevent leaks, but they can certainly help minimize the consequence of leak. Regrettably, too many leak detection systems fail to detect leaks, and other leak detection systems are ignored by the operators because they are unreliable. Thus, leaks that should have been small spills become disasters that cost pipeline owners millions of dollars.