Hmm, I did hit 50% of my water goal every day, but I never reached 100% once.  In order for me to drink 220 ounces of water by dinner i would have to drink roughly 20 ounces per hour and the kids would certainly look at me funny to see all those jugs overflowing my garbage lol.  I did manage to drink at leasy 128 ounces every day though.