On a supply where a leak had been detected usually over 15m the Ferret Leak Detection device can be used as an option for pinpointing where a leak is. The Ferret is inserted into the pipe at any opening and then it works its way up the pipe until it discovers the leak. A balloon in the Ferret then inflates and stays there. We then use a Cat & Jenny device to trace where the Ferret is.
The leak can then be excavated on, defective section of pipework cut out and a new piece installed.