I've had no cold water in the bathroom sink upstairs for the last 2 days. I have hot water (not a mixer tap).
Toilet flushes fine and shower releases cold and hot water (through mixer tap) fine.
Water in the kitchen is fine.
I have a combi boiler.
I have recently noticed what sounds like pipe(s) shaking initially when you turn the water on & off. (dont know which pipe(s)). Cant say I've noticed it since we've been without cold water upstairs - it could be completely un-related - any ideas?
Agree with SD (faulty tap). If a quarter turn tap then ceramic disc has had it, if standard tap then probably someone heavy handed has turned it too hard and made the jumper jump a thread
Stewiesnake, January 2012
If you have not turned anything off, faulty tap, You will need to turn your water off, open the tap to find out what is stuck.