John Hicks wrote: >So...assuming you haven't moved to a new water supply, perhaps >what's happening is that there's some seasonal change in the >hardness of your >tap water or what's being put into it.(posted 8546 days ago)That's very likely. Since the incident of e-coli contamined water in Wakerton the City of Toronto has been increasing the volume of chemicals (mainly clorine) in our tap water. Would the water filtered through one of those Brita carbon activated filters work fine? Herbet.