Via Genova in Chappaqua, New York, bills itself as a water bar and “eclectic café,” serving up mixed fare like Belgian waffles, antipasto and caramel cheesecake. It also features the preferred waters of the stars, including Elsenham, favored by California Gov. Arnold Schwarzenegger, and Oprah’s choice, 1 Liter, and will even cater water for special events (viagenova.com). The Aqua Store in Rome’s central Termini railway station is a destination in itself; more than a thousand visitors pass through daily to sample the extensive range of bottled waters as well as water “cocktails” that come infused with fruity flavors (aquastore.it). Best of all: they won’t leave drinkers with a pounding head the next morning.