I get Reverse Osmosis water from the local gas corner market, 25 cents a gallon, then modify it from there. You could always shoot an e-mail to Stone to see what they do, They are out of Encinitas. I think I remember reading in their "Clone a Stone" Vertical Epic series them saying something like they bring the water up to a certain temp to vaporize the chlorine..or something like that.
Primary:Russian River Redemption clone, Kelly's Melomel, Graham's English Cider 22-23
Aging:Public House Dry Stout, Procrastination Porter, Mr. Brown Ale, Westvleteren 12 Clone, Mead, Duvel Clone, Graham's English Cider 6-21, Belgian Draak Strong Ale, Fig Melomel, Acerglyn, Restorative Tonic Metheglyn