Here is a rugged, versatile robotic platform that can crawl through narrow pipes to perform inspect. The Pan/Tilt Minibot, combined with a distance meter, can locate a leak and determine the distance from the entrance. It can carry a GoPro camera to provide a live video-feed to the operator.
The Pan /Tilt Minibot comes with a rugged meter mount that is easy to install and remove. You can move the GoPro camera in all directions to inspect various parts of the pipe. LED lighting is also available.