We had a new bathroom fitted 18months ago and now the toilet is leaking and there a bit of water on the floor at the back of the toilet.. The leak is clean water i think and is not a lot but as always you don't know until it's built up and is in danger of causing a bigger problem. It is a back to the wall type of gtoilet and is fitted against a wooden unit and sealed in apart from a small space at the back. I think it's the water flowing from the cistern, but it's all enclosed in the vanity unit so it's very hard to identify the problem. The top of the unit is corian. Any ideas about where leaks might come from in such a unit and how hard it is for plumbers to take this sort of toilet apart. I am presuming they won't have to rip it all apart. There must be some easy way in. Please tell me there is.