i know that i personally CANNOT drink ozarka water. this was even before the WLS. for me, it has to do with the sodium and other mineral contents of the "pure" water. mostly the sodium.
have you tried ultra-filtered waters with little to no mineral content, i.e. fiji or evian bottled water? if one of those works, i wouldn't suggest buying lots of expensive bottled water - but investing in a good water filter system for your home which will remove the minerals, and chlorine (another possibility, chlorine in tap water is really harsh on your tummy but particularly when your tummy is full of stitches and sores) from your tap water.
but trying a good, mineral free, bottled water first would save you some money on the water filter system in the long run...
"Believe nothing, no matter where you read it or who has said it, not even if i have said it, unless it agrees with your own reason and your own common sense." - Buddha
HW: 322 SW: 314 CW: 137