I've had two occurances where I've come home from work to find my bath taps open and gushing water, even though they were off when I left for work. First time it was both hot and cold taps, yesterday it was just the cold water tap. My plumber is puzzled and said the washers in the taps are fine. Anyone have any ideas or had this happen to you? Two plumbers I've spoken to have no idea. And the taps were definitely off when I left the flat.

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    Do you have cats? I've watched one of mine knock a particularly easy-to-open tap to turn it on ... cheeky little #@$$%@
    – brhans
    Oct 19, 2016 at 11:23
  • I do, but she never goes near the tub. The tap is also fairly stiff.
    – user61554
    Oct 19, 2016 at 11:28
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    I've seen sink taps where, if you open it slightly and wait, it will slowly open itself until it is completely open. I haven't seen one that will do that from fully closed, though. Is this new behavior? Oct 19, 2016 at 11:44
  • It happened last year. Both my hot and cold taps opened at the same time in the same tub as yesterday. I chalked it up to the renovations they were doing in the apartment next to mine. And my plumber says the water pressure in this building is really high so that might have something to do with it. But my plumber has no idea.
    – user61554
    Oct 19, 2016 at 12:05
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    I have seen Washer less faucets do this with a drop in pressure. You might need to get a motion activated camera to catch the gremlins.
    – Ed Beal
    Oct 19, 2016 at 15:14

1 Answer 1


I have the same issue with the hot water ONLY. Done some ‘testing’. Mark the tap of the hot water and run some water into the bath. Close the tap and realise that it still has to go about one full turn but it feels as if it is closed. After about 5 minutes I open another hot water tap (the basin) and suddenly the hot water in the bath starts to run. When turning the hot water tap of the bath it easily turn the missing turn as mentioned above. I will inspect the inside of the hot water tap in the next day or two. In the meantime I will check my marks on the tap (and wall) everytime I have used the tap.

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