Have you tried MiO?  It is a water enhancer, and I can barely drink water without it now.  I was trying to up my water intake this summer, and if I forget my love {sweet tea} when I leave the house, I have a mini hissy fit.  You control the strength of your drink….just squirt it in & give it a shake.   I have tried several other flavors {fruit punch, orange tangerine, green thunder/energy, berry pomegranate} but I always end up back at sweet tea.  Bonus idea….after 5pm you can add some vodka and get real crazy!