Three leak detection/location technologies were demonstrated on a 76-year-old, 2,057-ft-long portion of a cement-lined, 24-in. cast iron water main in Louisville, Kentucky. This activity was part of a series of field demonstrations of innovative leak detection/location and condition assessment technologies sponsored by the U.S. Environmental Protection Agency (EPA). The main goal of the demonstrations was to acquire a snapshot of the current performance capability and cost of these innovative technologies under real-world pipeline conditions so that technology developers, technology vendors, research-support organizations, and the user community can make more informed decisions about strengths, weaknesses, and need for further advancement of these technologies.