In chem classes we were taught that water may, in part, be defined a "tasteless, colourless and odorlous liquid".

As somebody else mentioned, it gets a flavour or taste only when it has other stuff dissolved in it. Interesting thing thing about water that tastes awful (like the legendary stuff served up by the public water authority to the folk of Adelaide, South Australia) - it often makes good beer!! (Make mine a Cooper's!!)

stales