I'm not a water lover either. I used to only be able to drink cordial. I switched to water with a squeeze of citrus (lemon, grapefruit, lime, whatever) but have just switched to plain water.
I too think there is a vast difference between rain water and tap water. The bloke's parents live on a little farm out the back of whoop whoop. Didn't have power for the first few years of the bloke's childhood, don't have a flushing toilet, grow own vegies etc, fetch drinking water from their creek. It's the best tasting water EVER.
And there is a BIG difference between warm/room temp water and cold/iced water.
I'd say experiment with it to find something you like and maybe wean yourself on to it by using cordial and reducing over time the ratio of cordial to water.
35kg lost. (November 2005 - October 2006)
15kg gained again (as at October 2010).
Back to the drawing board - Let's do this thing!
"You can't change the winds, but you can change the sails"
"Reach out and take control of what lands in your lap"