We all have to deal with water in our firings. Bisque is where most have the most disasters. Mechanical water, Atmospheric water, and chemical water are all possible culprits to cracks, blow ups and major disasters in a bisque fire. I always go slow until after 1100 F. as you have all sorts of things going on in the kiln up until that time. First the atmospheric water has to be driven out(assuming the pieces are bone dry), secondly the chemical water is released, and then organic matter, and finally the quartz goes into inversion. Best to fire slow til then.
Many people do not pay attention to water in glaze firings though. If your pieces have not dried sufficiently after glazing, especially on soft bisqueware, you may end up with crawling, pin holing and other glaze defects you would rather not have.