Johnny Jet says never to drink the tap water on an airplane. 1/3 often fail the standards for water safety. Always choose unopened bottles of water. Flight attendants don't drink the water, and neither should you. Carry an empty bottle of water and fill it up from the water fountain. Or freeze a bottle of water and bring it. TSA will let you bring it along.
Travel site of the week - RideCabin.com. It's a bus you can sleep on while traveling between San Francisco and New York. It's the first moving hotel. $115 one way.