Green tea has been popular with my taste buds lately. I tend to brew a pot and drink it hot in the AM, and finish the cooler tea later in the day.
After speaking with my sister (the acupuncturist) about it, I tend not to drink iced water anymore. It's considered harsh for the body as it has to be warmed up to body temp internally. I will drink cool or cold water, just skip the ice. And I do tend to add a squeeze of lemon a lot more in the summer.
If I'm treating myself, an Odwalla Limeade is nice.