Hi Tora Chan.  I too have been thinking a lot about water.  That is how can I get the best quality as possible.

I was once told by a natural therapist that dry mouth/lips can be a sign of digestive problems i.e. intestinal. I think this probably holds some merit because I have noticed that since going raw I no longer have dry lips (and my water consumption has decreased!).  Well something to ponder anyway. 

Jen - where did you get your ceramic water filter?  It sounds good. I only have a cheap activated carbon one at the moment but I guess it is better than nothing.