Old and poorly constructed pipelines, inadequate corrosion protection, poorly maintained valves and mechanical damage are some of the factors contributing to leakage. One effect of water leakage, besides the loss of water resources, is reduced pressure in the supply system. Raising pressures to make up for leakage losses increases energy consumption, makes leaking worse, and adversely impacts the environment. Of the many options available for conserving water, leak detection is a logical first step.