I need some help please. How do I go about finding a water leak at my house? Most of the piping is under concrete (about +/-25m in length and about 300mm thick). I can see the municipal water meter slowly turning, and listening by the pipes one can hear it. I cannot see anywhere where there might be leak. No water through the concrete, no stains by the walls, no wet patches in the grass. Without having to start and dig and follow the pipe untill the leak is found, how else could this be done? I don't think the leak is huge but it is costing me money every month. Please help.
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