Some things in the world actually are almost free, as it turns out.
Tap water at restaurants, your office, the gym, or anywhere else where the water bill isn't in your name costs you fractions of pennies in the taxes that go toward infrastructure maintenance — it's appreciably free.
To get the recommended 64 ounces of water you need daily from bottled water, you'd pay at least $3.75 a day, or $1,369 a year.