30 Day Water Challenge Anyone?

So me and one of my best friends are currently doing a water challenge that lasts 30 days (The challenge is to drink nothing but water for thirty days). I started about two weeks ago, but I'm trying to make it all summer drinking just water (With the exception of milk, as long as it is with cereal). Yes, it can be unhealthy to just drink water ONLY if you make it unhealthy. By eating the right foods to make up for certain nutrients, you can eliminate all beverages except for water (Or so "they" say). I feel more hydrated, I haven't received any stomach aches lately, and I've reduced my calorie intake by a huge amount by eliminating sugary drinks. I've stopped drinking soda for about a few months now, but this is a new thing for me. So, anyone up for it (For at least 30 days) ? And by the way, if you'd like you may add me I'm on everyday.