TV-02Find your stopcock and check for hidden pipes and cablesBefore drilling, find your stopcock — usually under the kitchen sink — and check it turns, so you can shut off the water fast if you hit a pipe. Use a cable and pipe detector across the whole fixing area, but still assume something could be there and prove it isn't, since detectors miss deep cables, cables in metal conduit, and anything behind metal-backed board. If you have any doubt at all, isolate the circuit at the consumer unit before drilling, and turn off the water at the stopcock before cutting into anything that could carry water.