Originally Posted by chally
I plan to use distilled water.
Distilled water is often times more expensive than filtered or spring water, and the resulting beer isn't as good.
My tap water is chlorinated so I don't like to use it for brewing, but for about $4 I can get 5 gallons of filtered or spring water that works wonderfully!
 I guess I should add that distilled can be ok for purely or mostly extract brews, as the necessary minerals will be concentrated in the extract too.