Hi all - I have a curious problem. Water is turned off as well as air con but when I removed soil pipe there is a drip down the pipe (inside the pipe). I removed the soil pipe with a view to remodel a bathroom and left the soil pipe disconnected for two weeks as I was away and when I returned all surface below the disconnection was quite wet and then I noted the regular drip down the pipe at the rate of roughly a drop per second. Where could this water be coming from? The house has a rain water collector whose overflow probably connects to the soil pipe but the collector is totally empty (and dry). I would be most grateful for any ideas. Thank you.