It’s a whole new ballgame for the San Diego County Water Authority when it comes to finding leaks in major pipelines with cutting-edge technology. One new tech tool deployed for the first time in February actually looks like a tennis ball that floats through water-filled pipelines scanning for potential trouble. Of course, the new device is much more complex inside than a tennis ball – in fact, the Nautilus is among the most advanced tools of its kind in the world. It not only detects defects that are invisible to the human eye, it does so without requiring pipes to be drained, which saves a significant amount of water and disruption to customers.